TTW's Annual Report

Annual Report 2025

We honour the diverse histories, cultures and contributions of Indigenous peoples and communities around the world, and we commit to fostering respect, reconciliation, and inclusion in all places where we work.

Aboriginal and Torres Strait Islander people should be aware that this publication may contain images, voices or names of deceased persons in photographs, film, audio recordings or printed material.

Cover Page | ANU Research School of Physics and Engineering

Photography credit: John Gollings

Content Page | 50 Martin Place

Year in Review

As I reflect on the past financial year, I’m filled with a genuine sense of pride in what our team has accomplished. FY25 has been a standout year for TTW, marked by exceptional achievements despite the challenges posed by global uncertainty and a shifting economic landscape. What makes this year truly memorable isn’t just the incredible projects we’ve delivered, it’s the people behind them. Our team’s dedication, creativity, and collaboration have been the driving force behind our success. The culture we’ve built together continues to thrive, and it’s this shared spirit that sets TTW apart.

Looking back, there are some iconic projects that have come to life this year. The Australian War Memorial, the IKN Mosque, the West Gate Tunnel Project, and Western Sydney Airport are just a few examples of the scale and significance of the work we’ve been part of. And honestly, there are too many more to list – each one a testament to the trust our clients place in us and the expertise we bring to the table. But what I’m most proud of isn’t just the projects; it’s our people.

The pages in this report that showcase ‘Life at TTW’ speak volumes about who we are. They highlight a vibrant, collaborative team that lives and breathes our values every day. From early career professionals to seasoned experts, there’s a real sense of shared purpose and teamwork that makes TTW a great place to work. It’s this culture – built on respect, curiosity, and a drive to do things better that underpins everything we do.

As we look ahead to FY26, I’m excited about what’s to come. We’ve secured some fantastic project wins that will continue to build on the legacy of the TTW brand. Our teams are delivering best-in-class work, and I have no doubt that the coming months will bring even more opportunities to innovate, collaborate and grow.

We’re also continuing to invest in our people and our capabilities. Whether it’s through professional development, new technologies or strengthening our client relationships, we’re focused on staying ahead of the curve and making sure TTW remains a trusted partner in the industry.

To our clients, thank you for your continued support and partnership. To our team, thank you for your passion, your commitment and your drive to make a difference. I’m proud to lead such a talented group of individuals, and I’m looking forward to another successful year together.

Let’s keep building something great.

Where You’ll Find Us

With offices across Australia and Southeast Asia, we’re proudly employee owned. Our footprint supports our commitment to delivering local insight and practical solutions for clients wherever they need us. Whilst we offer local teams with local expertise, our reach is global and we work on award-winning and community-leading projects around the world.

Years

Appointments

Steven Leptos COO

Samuel Cooper Director Major Projects Structural | Brisbane

Milestones

Dean Spencer Director Structural | Melbourne

Ciaran Gray CFO

Natalie Brooke Head of HR

Amanda Tippins-Kirk Senior Business Development Manager

Arga Sandhi Associate Director Structural | Jakarta

Brandon Kieseker Associate Director Façade | Brisbane

Tristan Harris Associate Director Specialist Services | Melbourne

Edward Dalton Associate Director Advance | Sydney

Kathryn Walter Associate Director Façade | Melbourne

Trent Byrne Associate Director Structural | Brisbane

A Year of Impact

Winners

88 Walker Street, North Sydney

CTBUH Awards - Best Tall Building, by Height, 100-199 meters 2024 Award of Excellence

CTBUH Awards - Best Tall Building, by Region, Oceania 2024 Award of Excellence

Master Builders Australia - National Commercial/Industrial Construction Award - Over $100M

World Architecture Festival (WAF) - Completed Buildings - Mixed Use

Barker College Maths and Student Hub

AIA NSW Chapter Award for Educational Architecture

Technical excellence has always been the foundation of our business, but what truly sets us apart is how our people apply that expertise to deliver meaningful outcomes for clients, partners and communities.

Over the past 12 months, we’ve celebrated industry recognition across every region, from major project wins to respected accreditations and awards that showcase the scale and impact of our work

This year, projects featuring TTW’s engineering excellence were honoured around the world. Our people shared insights at industry forums across Australia and Asia, and we secured new certifications that reflect our commitment excellence and continuous improvement.

As we reflect on this year of impact, we’re proud of what we’ve achieved, and even more excited about what’s next.

Key Accreditations

Ɉ ISO 9001:2015 Quality Management Certificate

Ɉ ISO 14001:2015 Environmental Management Certificate

Ɉ ISO 45001:2018 OH&S Management Certificate

Ɉ ISO Anti-corruption/bribery

Ɉ Technically Assured Organisation (TfNSW)

Ɉ NABERS Embodied Carbon

Ɉ Queensland Rail - EEO

AIA NSW Chapter, The Milo Dunphy Award for Sustainable Architecture

Blacktown Exercise and Sports Technology Hub

AIA NSW Chapter Award for Educational Architecture - Commendation

AIA NSW Chapter Award for Interior Architecture

Capella Hotel Sydney

AIA NSW Chapter Award for Educational Architecture - Commendation

AIA NSW Chapter Award for Interior Architecture

Clifton Hill Primary School

AIA National Award for Educational Architecture

AIA VIC Chapter Award for Educational Architecture

Michael Kirby Building, Macquarie University

ACSE NSW Awards - Large Projects

AIA NSW Chapter Award for Interior Architecture - Commendation

Australian Timber Design Awards - People’s Choice Award

Australian Timber Design Awards - Public Building

Interior Design Excellence Awards - Institutional Project

Master Builders Australia - National Commercial/Industrial Construction Award - $50M - $100M

Tarakan Street Social Housing

AIA VIC Chapter Award for Urban Design - Commendation

The Pavilion Performing Arts Centre Sutherland

AIA NSW Chapter Award for Public Architecture - Commendation

AIA NSW Chapter Award for Sustainable Architecture - Commendation

The Sydney Swans HQ at Ryal Hall of Industries

AIA NSW Chapter Award for Commercial Architecture

Talking Points

August 2024

Mass engineered timber at ID Architects Pte Ltd and Meinhardt Group: Serena Yap, Director - Singapore

September 2024

Australian Steel Institute Steel Convent: Hannah Jones, Sustainability Lead

October 2024

Data Centre World Asia Conference: Wystan Alexander, Director; Serena Yap, DirectorSingapore & Marten Eddy, Executive Director

November 2024

Sarawak Timber Industry Development Corporation: Serena Yap, Director – Singapore

Singapore Structural Steel Society: Kevin Berry, Managing Director

February 2025

ZAK World of Façades: Dwayne van Halewjin, Associate Director

March 2025

Climate Action Week Sydney: Hannah Jones, Sustainability Lead

April 2025

Clean Energy Council: Andre Pereira, Director

Institution of Structural Engineers: Marten Eddy, Executive Director & Mochammad Baagil, Associate Director

Specialist Engineering Assessment / Sydney Water & WSce: Michael King, Technical Director Club Hibernia: Martin Folan, Director

May 2025

Sydney Build Expo: Hannah Jones, Sustainability Lead

Engineers Australia Temporary Works Case Studies: Lincoln Ladds, Associate Director

June 2025

Melbourne’s Green Building Day: Richa Sud, Sustainability Lead

Our Culture and Values

Our impact goes beyond engineering

Our core values are more than words on a page - they guide our decisions, design and interactions. They are the reason our clients trust us to deliver solutions that don’t just meet expectations, but redefine what’s possible.

We believe the best outcomes are achieved together: across teams, across disciplines, across organisations, and across the industry. Our people are natural collaborators, bringing openness, curiosity, and respect to every interaction. This mindset drives smarter solutions and stronger partnerships.

A standout example is the spectacular glulam timber roof soaring above the new Sydney Fish Market. Made up of 594 individual glulam beams and more than 1600 cubic metres of timber, the complexity of turning vision into reality demanded seamless collaboration.

From the earliest stages, our Construction Engineering team worked closely with our client, Multiplex, the project consultants, and their extensive network of subcontractors. Through this collaborative effort, they overcame complex stability challenges and delivered a coordinated design that seamlessly blends engineering precision with architectural ambition.

The result is more than a roof. It’s a symbol of what’s possible when expertise is shared, ideas are challenged, and everyone is working toward a common goal. It stands as a landmark for a global destination, and a testament to the power of collaboration.

Collaborate Personal Approach Technical Excellence

Take Initiative

Initiative is what drives progress, our people bring it to every challenge. They don’t wait to be asked. They step forward, challenge assumptions, and lead change with purpose.

This mindset is embedded in how we work. Our teams are constantly looking for ways to improve outcomes for clients, whether it’s through smarter design, streamlined delivery, or more sustainable solutions. One example is our approach to measuring and reducing embodied carbon, an area where early decisions have a significant impact.

Recognising the opportunity to influence outcomes from the outset, we’ve appointed Sustainability Leads who actively shape project strategies. By integrating carbon considerations alongside structural performance, cost and program outcomes are achieved through embedded integration, adding value for clients as standard practice.

Initiative like this isn’t the exception, it’s how we work. It’s how we stay responsive to client needs, solve for complexity, and deliver value beyond the brief.

Innovation is only valuable when it delivers real outcomes and our people know how to make that happen. Our Digital Engineering team combines deep technical expertise with a sharp focus on client priorities, using advanced tools to optimise design, reduce costs, and improve efficiency.

On a wind farm project, their modelling and refinement of civil works led to a 21 per cent reduction in earthworks and significant time savings. This wasn’t just a technical achievement; it was a strategic advantage. The clarity and confidence provided by our approach helped the client secure board approval, demonstrating how technical excellence can directly influence business decisions.

This is the kind of impact our people deliver. By combining engineering technical excellence with commercial insight, we help clients move forward faster, smarter, and

We don’t believe in one-size-fits-all. Our people take a personal approach to everything they do; listening closely, tailoring solutions, and building relationships that last. It’s this mindset that sets us apart and drives better outcomes for our clients, our teams, and the industry. Our leaders set the tone and our teams deliver on a personal approach to their work from the get go.

Starting a career in engineering is a pivotal moment.That’s why we invest in our interns from day one, pairing each with a dedicated mentor who provides structured learning, real project exposure, and ongoing guidance. But this isn’t just about support, it’s about unlocking potential early.

Our personalised approach accelerates development, builds confidence, and enables interns to contribute meaningfully from the start. The benefits ripple across the business: mentors grow as leaders, teams gain fresh perspectives, and clients see the impact of engaged, capable people who are ready to deliver.

This is how we build the future of engineering; one relationship at a time.

Our Disciplines

Structural Engineering

Our people, building what’s possible

The built environment is full of complexity; balancing sustainability, efficiency, cost, and long-term performance. Every project brings a unique set of challenges, and there’s never a shortage of factors to consider. For over 65 years, our clients have trusted us to turn these challenges into opportunities, creating a legacy of iconic work that stands the test of time, both theirs and ours.

Our team of Structural Engineers brings a personal, client-focused approach to every project. We deliver efficient, functional solutions to even the most ambitious architectural visions, ensuring that no detail is overlooked.

By combining deep experience with advanced modelling and a passion for innovative problem solving, we empower our clients to achieve bold, practical, and sustainable designs. Together, we’re shaping a future where great design and enduring performance go hand in hand.

Every remarkable structure is the result of people working together; combining expertise, creativity, and a shared dedication to delivering outcomes our clients can be proud of for years to come.

Spotlight on: Timber Engineering

Building stronger, lighter and greener with the natural power of timber.

Our Timber Engineering team provides timber solutions for mid- to high-rise structures, combining technical expertise with industry-leading design tools. Our team is actively involved in timber material development and testing, delivering precise, flexible outcomes that extend beyond standard guidelines. This integrated approach minimises on-site labour, reduces material waste, and maximises the benefits of prefabrication and modular construction.

Civil Engineering

Creating the foundations of global communities

Throughout the entire project lifecycle, the Civil Engineering team provides expertise from initial conversations and early planning, through design and construction, to ongoing asset management.

Close collaboration with clients at every stage ensures that project goals and outcomes remain central to the process. By combining fresh thinking with practical experience, the team delivers solutions that are innovative, cost-effective, and tailored to meet the specific needs of each project.

Spotlight On: Energy Renewables

TTW’s entry into the wind energy sector is driven by the growing need for advanced digital and civil design early in project development.

Traditionally, detailed civil design and modelling are delayed until the later stages due to budget constraints, by which point planning controls have already locked in critical site decisions. This limits opportunities to optimise design for constructability, cost-efficiency, and environmental impact.

Our approach challenges that norm.

By introducing digital workflows and computational design tools from the outset, we’re able to rapidly generate 3D civil models and continuously refine them as the project evolves. This iterative process improves the quality and speed of decision-making, supporting early feasibility assessments and helping projects move more confidently towards financial close.

This capability is now a core part of our engineering offering in the renewables space, delivering value from early concept through to detailed design and documentation.

A civil solution is never just about solving a technical challenge - it’s about shaping better places for people and the environment.

Façade Engineering

The art and science of the building envelope

Our personal touch starts when you catch a glimpse of the building façade. Where engineering meets art, we deliver the public face of the building and the first layer of comfort for those within. Our Façade Engineers don’t just design building envelopes, they bring bold architectural visions to life. Working sideby-side with clients, architects, and contractors, our team thrives on collaboration. Turning complex challenges into elegant, buildable solutions.

From high-rise commercial towers to transport hubs and mixed-use precincts, our people have shaped façades across Australia and around the world. Every project is an opportunity to combine creativity with deep technical expertise.

Behind every success is a team of engineers who care deeply about the details, from concept through to construction. What sets us apart is our people; passionate problem-solvers who bring energy, insight, and precision to every project. Their work is the public face of the buildings we help create, and their commitment is what makes ambitious design possible.

Engineering Architectural Vision: Western International Sydney Airport, NSW

Covering 42,000 sqm, the suspended aluminium roof references the Great Australian Bushland, with curved battens creating a wave-like rhythm that guides passengers through the terminal.

Our Façade team solved the ceiling’s complex threedimensional geometry, suspended on wires and central spines. The roof also required resilience against blast and earthquake loads, the management of thermal expansion across 60-metre roof sheets, and strict performance in acoustic, thermal and waterproofing conditions.

Through digital modelling and innovative engineering, TTW delivered a constructible solution that preserved the architectural intent.

A façade is where engineering meets art. It’s not just the public face of the building but also the first layer of comfort for the people inside.

Traffic Engineering

Smoother journeys, stronger outcomes

Safe, efficient movement is vital to the wellbeing of communities. Our Traffic Engineers are passionate about creating transport solutions that serve people; reducing disruption, improving connectivity, and supporting sustainable travel.

From the earliest stages of planning, we work closely with clients and stakeholders to explore options and develop detailed traffic management plans. Whether it’s a complex urban site or a regional corridor, our focus is on minimising risk and delaysduring construction and throughout the life of the project.

Combining practical experience with the latest technologies and transport strategies, our team encourages active travel modes and delivers better outcomes for everyone who uses the space. Every solution is tailored, and every challenge is met with care and precision.

Effective traffic design is invisible - it makes movement safe, seamless and sustainable for everyone.

Engineering Movement With Purpose: Melonba Education Campus, NSW

The Melonba Education Campus saw the transformation of a 6-hectare greenfield site into an integrated education hub. Our Traffic team worked to resolve the limited transport options.

Working closely with the local Council and Transport for NSW, we ensured appropriate bus services to the area, new footpaths for safe pedestrian movement, eight zebra crossings, storage for up to 200 bicycles, improved bus stop facilities, and dedicated accessible drop-off areas.

Construction Engineering

Building smarter, safer, better

Working closely with clients, we break down complex engineering constraints and maximise opportunities to improve efficiency, reduce risk and deliver projects with precision.

Our Construction Engineering team develops practical construction methodologies that balance supply chain constraints, construction sequencing, and design-critical elements, ensuring efficient delivery on site.

With a clear focus on risk reduction during construction and deconstruction, we ensure our documentation is practical, precise and sets every project team up for success.

Great construction engineering turns challenges into practical pathways, so projects rise safely from vision to reality.

Engineering Flow During Construction: Manningham Road Interchange, VIC

Part of Victoria’s largest road project, the Manningham Road Interchange forms a key link in the North East Link Central Package. TTW led the design for the staged road diversions during construction, coordinating geotechnical, traffic, civil, electrical, and lighting disciplines to keep the project moving safely and efficiently. Close collaboration with multiple authorities and stakeholders helped ensure minimal disruption for the community, with new diversions already open to traffic since April 2024.

Digital Engineering

Where advanced technology and practical engineering meet

We integrate advanced digital tools at every stage of the project lifecycle, from early design through to construction and delivery.

Our Digital Engineering team enhances collaboration and accuracy across disciplines, unlocking smarter, faster and more efficient outcomes.

By embedding digital tools early in the design process, we help our clients reduce risk, save time, and optimise cost through coordination, streamlined fabrication and construction-ready modelling.

Complex Geometry in Action: West Gate Tunnel Portal, VIC

The tunnel portals on the West Gate Tunnel Project brought together cultural expression and technical complexity. Inspired by Melbourne’s Aboriginal and maritime heritage, the sculptural timber and aluminium forms presented significant geometric challenges.

TTW was engaged to optimise the complex geometrical designs, bridging the gap between aesthetics and constructability. Using digital modelling and input from both our Structural and Digital teams, the geometry was simplified to make the cladding and its fabrication more manageable. This approach supported a lightweight, sustainable outcome without compromising the architectural vision.

Digital engineering transforms complexity into clarity, bringing precision, efficiency, and insight to every stage of design.

Applied Science

Turning complexity into clarity

Across the built environment, our clients face increasingly complex challenges, and we’re here to help navigate them.

By applying advanced simulation, computational design and deep engineering insight, our Applied Science team works closely with project teams to uncover practical, innovative solutions that enhance performance, reduce risk and improve cost efficiency. Every project is different, so we tailor our analysis strategies to suit, ensuring outcomes that meet all relevant standards and deliver lasting value.

Physical Security Engineering

Protecting people, places and assets through specialised structural design.

Our Physical Security team brings over two decades of experience delivering Structural Engineering solutions for security-sensitive projects across Australia and internationally. As an approved provider on the DFAT Security Advisory Panel and the Structural Engineering Panel for Operating Procedures Outline, we apply advanced simulation and analysis tools to deliver credible, timely responses in high-risk environments.

Specialist Underground Asset Assessments

As Sydney’s urban density increases, more developments are being built near critical underground infrastructure. These projects face stringent structural assessment requirements to ensure assets are protected during construction and throughout the building’s operational life. The process is highly technical, multi-staged, and subject to strict regulatory review, making early and accurate submissions essential.

TTW’s Applied Science team provided specialist services for a range of projects in these complex environments. We prepared structural impact assessments, technical reports, and drawing packages in line with the rigorous processes set by infrastructure asset owners. Our approach combines technical precision with a deep understanding of approval pathways, allowing us to identify potential risks early, address them proactively, and deliver well-researched, cohesive submissions. This has enabled clients to navigate complex requirements more efficiently, protect project timelines, and ensure that critical underground assets remain uncompromised.

Heritage Engineering

Preserving legacies, building futures

Combining technical expertise with a deep understanding of heritage values to ensure structures are preserved, strengthened and repurposed for continued use. We deliver practical solutions that respect historical significance while meeting modern performance, safety and compliance requirements.

Tradition and innovation in balance. Keeping stories alive while enabling structures to endure.

Re-Engineering

Renewing structures by rethinking their possibilities.

Our Re-Engineering services support clients in repurposing and upgrading existing structures to meet evolving performance, design, and compliance requirements. By combining innovative design with upfront emissions reductions and improved structural performance, we help navigate planning constraints and adapt assets for future use, ensuring they remain functional, efficient and sustainable.

Applied Sustainability

Reducing carbon through smarter design

We integrate sustainability into every stage of design, reducing embodied carbon and delivering measurable value for clients, projects, and the community.

Combining structural optimisation with early material assessment, we find improvements for our clients in performance, reducing cost, and meeting evolving sustainability standards. By working seamlessly with suppliers and design partners, we deliver efficient, low-carbon solutions that enhance constructability and resilience.

As trusted advisors, we guide clients through changing frameworks and carbon reporting requirements, strengthening TTW’s leadership in practical, data-driven sustainable design.

Building Smarter for the Next Generation: Griffith University Student Accommodation, QLD

TTW supported Griffith University’s sustainability ambitions for its new student accommodation tower, targeting a 5 Star Green Star Buildings certification. Working with the ESD consultant, our team integrated early embodied carbon analysis into the structural design, achieving a 20% reduction in upfront carbon. Practical guidance on low-carbon materials and structural optimisation helped deliver a resilient, efficient building that supports a more sustainable campus for future students.

Reducing upfront carbon isn’t just about sustainability, it’s smart engineering and smart business.

Our Sectors

Sectors

Our work extends the full landscape of the built environment, connecting sectors and communities. From hospital and school to transport, residential, and heritage, every project presents an opportunity to reimagine what’s possible.

The diversity of these sectors drives us to innovate, collaborate, and adapt ensuring our designs are not only technical but also meaningful to the people they serve. These sectors highlight reflect the scale of that ambition and the dedication of our team to deliver excellence.

Education & Research

Energy & Renewables

Industrial & Manufacturing

Ports & Marine

Prefabrication & Modular Construction

Residential & Accommodation

Resources & Infrastructure

Retail

Sports & Entertainment

Transport

Project Highlights

Australian War Memorial

Client: Australian War Memorial

Region: Canberra

Sector: Community

Disciplines: Structural + Civil + Traffic

TTW was engaged on this eight-year Australian War Memorial Development Project. The project included a new southern entrance, refurbishment of the main building, a new Anzac Hall which is connected to the main building via a glazed link, and an extension to the Bean Building to integrate research collections and services.

More than an engineering challenge, this project was about protecting a national legacy. Preserving the Memorial’s historic integrity while enhancing functionality and accessibility for visitors.

IKN Mosque

Client: PT Alien Desain Nusantara

Region: Indonesia

Sector: Community

Disciplines: Structural + Civil + Construction

The redevelopment of the Jakarta National Mosque - a twisted dome and circular landmark of spiritual and architectural significance - called for specialised engineering expertise. The project involved complex Structural Engineering design rarely used in Indonesia, including a fully posttensioned flat slab system. In close collaboration with the design team to ensure cultural sensitivity, seismic compliance, and buildability throughout the process, a space that will serve the community for decades to come has been created in partnership with our client.

New Sydney Fish Markets

Client: Multiplex

(funded by NSW Government)

Region: Sydney

Sector: Commercial

Discipline: Construction

TTW’s Construction Engineering team played a key role in the redevelopment of the iconic new Sydney Fish Market, particularly in supporting the installation of the impressive glulam timber roof which stands as the defining feature of the development. Our involvement included detailed temporary works design, construction sequencing, and stability assessments to manage the challenges of assembling over 1,600 cubic metres of timber beams. This collaboration, supported by Digital Engineering, enabled rapid adjustments during construction to ensure safe and efficient delivery. The result is a landmark structure that celebrates sustainable design and reconnects Sydney with its working waterfront, creating a vibrant public space for the community.

Western Sydney Airport

Client: Multiplex

Region: Sydney

Sector: Transport

Disciplines: Structural + Civil + Façade + Construction

Australia’s first greenfield airport in over 50 years - Western Sydney International Airport - saw TTW play a critical role in design and delivery. An integrated team of Structural, Construction, Civil, and Façade Engineers worked in coordination to ensure an efficient, buildable, and cohesive solution across the extensive site. The project showcases the impact of collaboration and innovation in meeting the demands of a transformative national infrastructure initiative, supporting a more accessible Western Sydney and creating connections between people and places.

Queensway Node

Client: Urban Redevelopment Authority

Region: Singapore

Sector: Community

Disciplines: Structural + Civil

Designed as a vibrant and immersive public node in the form of a kaleidoscopic tunnel along the Rail Corridor, the project blends heritage storytelling with community-focused design. Our Singapore-based team worked alongside a multidisciplinary group to develop a robust Civil and Structural Engineering approach that supported the vision for flexibility, sustainability, and community connection in this high-profile public space. Thoughtful engineering transforms a historic corridor into a cultural landmark that brings people together in movement, art, and shared experience.

Iglu Russell Street

Client: Iglu Pty Limited

Region: Melbourne

Sector: Accommodation

Disciplines: Structural + Civil + Construction

A multi-award winning project, we delivered multi-disciplinary services for this 28-storey student accommodation project in Melbourne’s CBD. We overcame complex site constraints (including supporting adjacent heritage buildings during construction) and developed a costeffective structural design that maximised usable space during a conceptual design phase. A focus on design for manufacture and assembly ensured efficient delivery on a tight, highly constrained site. Creating a safe, functional, and uplifting environment for students to live, learn, and connect in the heart of the city.

Michael Kirby Building, Macquarie University

Client: Macquarie University

Region: Sydney

Sector: Education

Disciplines: Timber + Structural + Civil + Façade + Construction

The new Michael Kirby Building at Macquarie University brings together the University’s law faculty under one roof in a striking, sustainable new learning environment. The building integrates flexible learning spaces, lightfilled interiors, and collaborative zones. Of particular note was the use of stateof-the-art mass timber engineering and construction with adaptive reuse, which was pivotal to the project’s success. This project highlights our capability in sustainable timber design and adaptive reuse, delivering a learning environment that enhances collaboration and connection across the university community.

88 Walker Street

Client: Billbergia

Region: Sydney

Sector: Commercial

Disciplines: Structural + Civil

TTW provided Structural and Civil Engineering services for 88 Walker Street - North Sydney’s tallest mixed-use tower. This vertically stacked building posed unique engineering challenges, including constructing a hotel, residential apartments, and commercial tenancies within a narrow footprint and tight urban environment. Through innovative design solutions to maximise floor space, enhance constructability, and manage loading across multiple uses and elevations. Our engineering expertise helps shape efficient, highdensity projects that add functionality to growing city centres.

Caulfield Grammar School Senior School Teaching and Learning Building

Client: Caulfield Grammar School

Region: Melbourne

Sector: Education

Disciplines: Structural + Civil

This 5-storey structure with a partial basement comprising 12,000sqm GFA incorporates classroom spaces, laboratories, auditorium, open atrium and incubator spaces. Our team was engaged on the new connected, accessible building to ensure it tied seamlessly with the existing campus. Our work included developing long-span structural solutions for the central atrium, integrating civil and landscape design to align with the broader masterplan and existing facilities, and reconciling significant site gradients to ensure full DDA compliance. Through a strong partnership with the school, TTW delivered a design that unites function and accessibility, strengthening campus connection and supporting and inclusive, collaborative learning environment.

Canberra Hospital Expansion

Client: Multiplex

Region: Canberra

Sector: Health

Discipline: Structural + Civil + Façade

TTW was engaged on the Canberra Hospital Expansion, one of the largest infrastructure investments in the ACT’s history. This major redevelopment includes a new Critical Services Building that delivers enhanced acute care capacity and clinical capability. Working closely with partners, we helped bring together highly complex services, hospital infrastructure, and buildability solutions to create a facility that meets the highest standards of modern healthcare. The expansion delivers a modern facility that supports high-quality care and creates a better experience for patients, clinicians, and the wider community.

Freecity Co-Living

Client: Freecity Group

Region: Sydney

Sector: Accommodation

Discipline: Structural + Civil

Designed to expand housing options for Macquarie University students, this new 20-storey accommodation tower will provide more than 500 highquality rooms and generous shared amenities. Using a volumetric modular construction method, it will become Australia’s tallest modular building once completed. The approach improves material efficiency, reduces waste, and enables faster delivery of much-needed student housing. TTW’s Structural, Civil, Façade, and Construction Engineering teams are delivering a sustainable, well-connected place for students to live, learn and belong.

Coomera Hospital

Client: Multiplex

Region: Brisbane

Sector: Health

Disciplines: Structural

+ Façade

Located in the rapidly growing northern Gold Coast region, the new Coomera Hospital will deliver advanced emergency facilities and specialised care services closer to home. TTW’s structural design meets post-disaster occupancy requirements and pioneers Australia’s first match-cast precast core with post-tensioned bars, a method that significantly accelerated construction. Delivering resilient, efficient structures that support safer, faster, and more accessible healthcare for the growing Gold Coast community.

CSIRO National Collections Building

Client: Hassell

Region: Canberra

Sector: Commercial

Disciplines: Structural + Civil + Façade

The CSIRO’s new National Collections Building in Canberra brings together Australia’s largest collection of biological specimens into one purpose-built, highly efficient facility. TTW delivered Structural, Civil, and Façade Engineering for this project, delivering elegant solutions that balance buildability, daylighting, thermal performance, and aesthetic appeal. The result is a landmark structure that reflects the diverse Australian environment and supports world-class research for generations to come.

Sydney Metro: Gadigal Station

Client: CPB + Oxford Properties

Region: Sydney

Sector: Transport

Disciplines: Structural + Construction

This new metro station and Sydney’s first large-scale, build-to-rent tower helping shape Sydney’s future was part of Australia’s largest public transport infrastructure project, Sydney Metro. Our involvement on Gadigal Station included optimisation of the reference scheme, on-time delivery of design to a very short program, optioneering with CPB team to find economical and practical solutions as well as collaboration with three architects, multiple services consultants and two clients. Sydney Metro contributes to a more connected, accessible city, improving how people move through Sydney and supporting the growth of vibrant urban communities.

Life at TTW

While each office brings a unique perspective to life at TTW, what connects us is a shared culture of collaboration, community, and celebration. These moments from across our teams reflect how we come together - in our own waysto connect, give back, and enjoy the journey together.

Health and wellbeing are ingrained across our business

Wellbeing is a shared commitment across all of our officesfrom small moments of connection to dedicated events that remind us to check in on ourselves and each other.

Amongst our annual wellbeing initiatives is our commitment to R U OK? Day, encouraging teams to connect and share conversations which are open and meaningful around mental health. All our employees and their immediate family members have access to our Employee Assistance Program (EAP) for free and confidential counselling.

Celebrating years of service across the business.

Robert Mackellar (Chairman) NSW

Marten Eddy Indonesia

Tanwin Tanwin Indonesia

Kristian Black NSW

Made Dendy Widhiartana Indonesia

Margono Margono Indonesia

Wystan Alexander NSW

Andrea Sackett NSW

Charlen Li NSW

Jumhur Ashari Indonesia

Khoa Vo NSW

Martinus Martinus Indonesia

Mike Barrett NSW

Miranda Lawrie NSW

Nicki Turner NSW

Sandika Gunawan Indonesia

Sopian Sopian Indonesia

Sydney

Tour de PIF | September 2024

A team of 10 participated in Tour de PIF alongside other representatives from the industry. Together they raised over $340K for youth homelessness.

Winter Gala | June 2025

Another highlight of the year is our annual Winter Gala. We celebrated long service milestones and enjoyed a night together again MC’d by the amazing Michael Babbage, TTW Traffic Associate.

Our Big Kitchen | June 2025

Our team’s commitment to the local community and generosity were put to work, preparing 80 meals for people in need at Our Big Kitchen.

Melbourne

Potluck | September 2024

Now in its fourth year, our team brought homemade or storebought dishes to share in a casual social lunch together.

Tour de PIF | November 2024

Our Melbourne team participated in the industry’s leading fitness challenge and raised $1,120 to support homeless youth.

Random Teams Golf Day | 2024

Our team had a wonderful time enjoying a lighthearted social day held at Box Hill Golf Club.

Brisbane

Christmas Sip & Paint | December 2024

Our Brisbane team wrapped up the year with a relaxed Sip & Paint night - a fun, creative way for everyone to unwind, catch up and celebrate the wins of the year together.

State of Origin | June 2025

With the Maroons taking home the 2025 win, our Brisbane and Sydney offices shared in some friendly competition and banter over the series.

Winter Soiree | July 2025

Staff and partners gathered for our Winter Soiree, celebrating their hard work and achievements on some of the most iconic projects in Queensland.

Canberra

Canberra Client Event | October 2024

We celebrated 40 years of TTW in Canberra with local clients and partners.

Escape Room at Riddle Room | October 2024

A great day of fun at the Riddle Room escape experience.

Family Fish & Chips | February 2025

A relaxed afternoon with staff and families at Snapper & Co by the lake.

Jakarta

Celebrating 27 Years | May 2025

Ratijem’s 27 years of service were celebrated with a heartfelt farewell - a memorable event that also marked the first retirement in our Jakarta office.

No Borders for Team TTW | May 2025

We welcomed Karen Champion, Kevin Berry, Mark Eisenhuth, Darren Jeffree and Steven Leptos to Jakarta to connect with our local team.

New Jakarta Office

After 22 years at our previous address, our Indonesia operations have outgrown the space and moved to a larger office so we can continue to meet the increasing need for services in the region. Located in the Arkadia Green Park tower, south of Jakarta, the new space means more collaboration, more opportunities for our team and more ways we can deliver practical, buildable solutions to our clients.

Singapore

Christmas Lunch | December 2024

Our Singapore team and their families enjoyed a festive lunch hosted at Emily Ong’s home, bringing everyone together to celebrate and close out the year.

Team Bonding & Whiskey Tasting | March 2025

The team came together for a whiskey tasting class, bringing a unique twist to team bonding.

People and Community

Our impact goes beyond engineering

From supporting each other’s growth through collaboration and professional development to contributing our time, knowledge and energy to the communities we work within.

500 Women In Property

Empowering women in industry leadership means empowering our industry to do better and to be more inclusive. A group of women from TTW were selected for the 500 Women in Property program by Property Council of Australia, which provides pathways, visibility and opportunities for women to step forward as leaders and help shape the future of engineering and property.

Congratulations to TTW’s participants:

Ankita Premi, Associate (Structural) | “I’m looking forward to building meaningful connections with sponsors, allies, and peers, and learning from their experiences.”

Bettina Welgemoed, Finance Manager | “This is a unique opportunity to make new connections, hear differing perspectives, and deepen my understanding of the property sector.”

Grace Carpp, Associate (Civil) | “I’m excited to be a part of a program that aims to deliver real impact for women in the property sector looking to advance their careers.”

Jin Yan, Financial Planning Analyst | “I am especially excited to collaborate with like-minded individuals and contribute to advancing diversity in our industry.”

Kathryn Walter, Associate Director (Façade) | “I’m looking forward to learning from the journeys of accomplished female leaders who are reshaping the future of our built environment.”

Richa Sud, Sustainable Design Lead | ”I’m looking forward to gaining exposure to diverse leadership styles and learning how others influence and inspire change, particularly in leading climate-conscious, and inclusive, outcomes across the built environment.”

Tania McKenny, Associate Director | “This is an incredible opportunity to connect, grow, and champion the next generation of women shaping the future of our industry!”

Developing future engineers is part of how we grow, as a business and as an industry. Our graduate and student programs are designed to provide real project experience, hands-on learning, and the guidance of engineers who enjoy sharing their knowledge.

These programs create space for emerging engineers to grow their skills, contribute to projects, and build successful careers in the industry.

Championing Emerging Engineers Emerging Engineers Program

Future engineers are growing at TTW. Our Emerging Engineers Program (EEP) gives graduates a clear, staged pathway from day one to Chartership readiness, blending real project work with structured learning across Onboarding, EEP1 Building Foundations, EEP2 Applied Knowledge, and EEP3 Readiness for Chartership. Progress is purposeful, with core and extension goals tracked in our TTW Hub so engineers know exactly what “good” looks like. We build professional habits early through a Competency Framework, Progress Log, and a Professional Development Journal that supports Chartership applications. By investing in the next generation, we’re not only creating confident, client-ready engineers but also strengthening the future of our profession.

Khanh Uong Graduate Structural Engineer | Sydney

Khanh joined TTW after completing her Civil Engineering degree at the University of Technology Sydney. She was drawn to TTW’s broad range of disciplines and supportive culture that encourages graduates to explore different aspects of the industry.

From her first day, Khanh has had opportunities to contribute to a wide variety of projects and learn directly from both engineers and the drafting team. A standout moment for her was contributing to challenging data center projects, where she learned about lateral stability, precast PT and steel design.

Khanh says the collaborative environment and strong mentoring at TTW have given her the confidence to ask questions, keep growing and see her designs come to life.

“The culture at TTW is very supportive and friendly. Everyone is approachable and is willing to help - it’s a very collaborative environment.”

Victor Zhang Graduate Structural Engineer | Sydney

Victor studied Civil Engineering (Honours) at University of NSW (UNSW), where exposure to multiple disciplines and particularly to Structural Engineering inspired him to launch his career at TTW. After connecting with TTW at the UNSW Careers Fair, Victor was impressed by our reputation for technical excellence, focus on sustainability and genuine investment in growing engineers. He’s since embraced every challenge - from site visits to producing design packages and learning new software - describing each week as a rewarding step forward.

With consistent mentoring, monthly seminars and an open, supportive team, Victor says TTW is exactly the place he hoped to start building his future. His advice to other engineers at the start of their career is to stay curious and ask questions.

“I wanted to begin my career at a place where I could grow fast and learn from some of the best engineers in the industry and TTW was exactly that.”

Simon Funcich Graduate Civil Engineer | Melbourne

Having studied a Bachelor of Civil Engineering at Monash University, Simon took the opportunity to kickstart his career at TTW to expose him to multiple sectors and broaden his skills.

Simon says he’s gained a genuine understanding of engineering in practice, from communicating directly with clients and other disciplines to managing projects from concept through to construction. With support from internal training and mentorship from senior engineers, Simon has been able to build his technical knowledge and confidence on the tools.

What he enjoys most is making a tangible difference in people’s lives through accessible, practical design and is driven by the opportunity to see his ideas become a reality.

“Engineering is a career where you learn something new every day. Don’t be afraid to ask questions or take initiative.”

Edwina Wang Graduate Traffic Engineer | Sydney

Edwina’s journey with TTW began during her university studies through our Cadet Program, giving her valuable hands-on experience with real projects and a supportive team before stepping into a graduate role.

She describes her time as a grad so far as rewarding, with a balance of structured learning and opportunities for independent responsibility. Edwina has benefited from technical workshops, presentations across departments and informal mentoring, all within a warm, inclusive environment where people genuinely care.

She finds the problem-solving nature of engineering deeply satisfying and sees every new challenge as a chance to grow and learn from experienced colleagues.

“Although I’ve learned a lot in just six months, there’s still so much more to discover and TTW is supportive in helping me gain those experiences.”

Internship Assessment Day Sydney

Our internship program supports the next generation of engineers with hands-on experience across Structural, Civil, Façade, and Traffic Engineering.

Over 60 days, interns gain exposure to both design and construction phases. Top performers may be offered part-time roles during their final year of study, with the potential for full-time opportunities after graduation.

Shortlisted candidates attended an Assessment Day at our Sydney office. Through a series of group activities, our assessors (TTW team members) observed how candidates aligned with TTW’s values and assessed their suitability for the internship program.

Our graduates are guided by a mentor through their first four years at TTW and are trained in all technical aspects of design as well as how construction sites run.

At the end of the program, they have the skills needed to apply for their Engineers Australia Chartered Professional Engineer (CPEng) accreditation.

Daniil Matcko Work Experience Student | Canberra

Year 10 student, Daniil Matcko spent a week with the team as part of his school’s work experience program. During his placement, Daniil gained valuable insight into the day-to-day of civil engineering, confirming his interest in pursuing the field as a future career.

His time with the Canberra team gave him a taste of the collaborative culture and practical experience that sets TTW apart, inspiring the next generation of engineers.

Hands-on heritage training

Olivia Britt, a Senior Structural Engineer in our Heritage Engineering team was awarded a place in the 2025 Society for the Protection of Ancient Buildings (SPAB) Scholarship training program in the UK. The program is a prestigious, immersive experience for early-career professionals working to preserve historic buildings.

When we checked in with Olivia during her training, she regaled us with stories of being on the roof of Westminster Abbey alongside other SPAB Scholars and Fellows: “I’m having a great time and learning so much. It’s inspiring to meet a diverse group of professionals all working hard to preserve historic buildings using techniques that respect the unique challenges of these structures. I’m excited to bring this knowledge to the historic sites I’m privileged to work on in Sydney.”

Olivia’s passion for mastering her craft is clear, and her journey is one we’re excited to follow as she brings fresh expertise and global insights to her projects with us.

Education partnerships

Our partnerships with universities and industry bodies are shaping the future of engineering. We collaborate with leading education providers to bridge the gap between academic learning and real world practice.

These partnerships include UNSW and the University of Sydney in New South Wales, Griffith University in Queensland and Monash, Swinburne, Deakin, and the University of Melbourne in Victoria. This year, our people also represented TTW at key career events such as the UNSW Careers Fair, Griffith University Gold Coast Careers Fair, and the University of Queensland Careers Fairbuilding connections with students who will shape the future of our industry.

These collaborations open doors for mentoring, collaboration, and practical experience that benefit students and strengthen our industry. They are also key to our Industrial Training Program and Graduate Program, which enables practical training with the potential for recruitment upon completion.

Industry partnerships

Sharing knowledge and supporting industry organisations helps communities to grow stronger.

Enabling Collaboration and Advancement

As a strong advocate for our industry and for creating opportunities for women in engineering to grow and thrive, we sponsored and hosted the NAWIC NSW Speed Networking event which brought together professionals from across the industry to upskill in how they connect and build meaningful relationships across the industry.

Leading the Way in Digital Engineering

Last July, our Digital Director André Pereira presented at ACSE NSW (Association of Consulting Structural Engineers NSW) on ‘Unified Workflows: Connecting BIM to Design and Analysis’. This session showcased how TTW Hub’s innovative workflows are transforming BIM models into analysis-ready design tools. This innovation helps our engineers make faster, more informed decisions and sets a new benchmark for integrated digital engineering.

Community engagement

Our team proudly supports projects that make a meaningful difference, especially where our expertise can help communities overcome unique challenges.

TTW’s Civil team are contributing pro bono engineering advice on a project in Marrickville delivered by Housing All Australians and Good Shepherd. Our support will help advance the work by Housing All Australians who advocate for business led support to solve homelessness and Good Shepherd, Australia’s oldest and longest-running not-forprofit that specifically supports women, girls and families. The development proposal is at the early stages of concept design and intends to provide affordable and sustainable homes for older women at risk of homelessness. TTW is proud to support initiatives that deliver enduring value to the community.

TTW Structural Engineers provided specialist advice on structural components to support modular construction for the Wilya Janta Housing Project in NT. This guidance addressed the challenges of limited local materials and labour, contributing to sustainable and culturally appropriate housing outcomes for Indigenous communities.

Executive Board

The outlook

Looking ahead, we’re energised by the opportunities on the horizon. The environment continues to challenge us, but we’re rising to meet it, working shoulder to shoulder with great partners and staying focused on what matters most - our people and our clients. With over 65 years of heritage behind us, we’ve built a reputation for delivering with integrity, consistency and care. Now, as we continue to grow as a global brand, we’re excited to bring that same commitment to even more clients, in more places, than ever before.