How do you know your work is making a difference? Meet Siu Hang Li

When Siu Hang Li joined AtkinsRéalis in 2014 as an Assistant Engineer, he was supporting senior colleagues on green building and sustainability projects.

Twelve years later, he leads a sustainable building design team as an Associate Technical Director, helping clients improve building performance, reduce energy consumption, and move closer to their sustainability goals.

For Siu Hang, what makes the work rewarding is seeing engineering solutions create measurable results.

"It showed that our work was not just a paper exercise but delivered real and measurable impact."

That ability to turn ideas into tangible outcomes has been a common theme throughout his career.

Growing with every opportunity

Over the past 12 years, Siu Hang has built his expertise across sustainability, energy efficiency, and green building projects.

As his experience grew, so did his responsibilities.

What began as a technical support role evolved into a leadership position where he now guides project teams, supports client decision making, and contributes to the strategic direction of complex sustainability initiatives.

Looking back, he credits much of his development to the variety of opportunities he has been given throughout his career.

Working across different project types has allowed him to continuously expand his technical knowledge while developing the leadership skills needed to support both clients and colleagues.

Turning sustainability goals into measurable results

One of the accomplishments Siu Hang is most proud of involved helping a major educational institution improve the performance and efficiency of its building systems.

While the project focused on identifying energy saving opportunities, what made it especially rewarding was seeing the projected savings confirmed through real operating data.

For Siu Hang, that validation represented something important.

It demonstrated that thoughtful engineering and sustainability strategies can deliver practical benefits, reducing energy consumption and improving building performance in a measurable way.

Those are the moments that reinforce the value of the work and the difference engineering can make.

Using technology to unlock better solutions

Innovation has played an important role in Siu Hang's career.

One area he is particularly passionate about is the use of digital tools to better understand how buildings operate and identify opportunities for improvement.

His team has applied digital twin energy modelling to existing buildings, combining real performance data with advanced simulation techniques to gain deeper insights into energy use.

Rather than relying solely on traditional assessment methods, this approach allows teams to make more informed recommendations and develop targeted strategies for improving efficiency and reducing emissions.

Their work recently received recognition through a Merit Award at the Green Building Award 2025, reflecting the team's commitment to combining engineering expertise with data driven decision making.

The power of collaboration

For Siu Hang, successful projects are never the result of one person working alone.

One of his favorite aspects of working at AtkinsRéalis is collaborating with colleagues who bring different skills and perspectives to the table.

Some team members specialize in design. Others focus on modelling, analysis, or project coordination.

When those strengths come together, the team can develop solutions that are technically robust, practical for clients, and aligned with sustainability objectives.

That collaborative approach not only strengthens project outcomes but also creates opportunities for individuals to learn from one another and continue growing professionally.

Looking ahead

As demand for decarbonization, energy transition, and sustainable building performance continues to grow, Siu Hang sees significant opportunities for the future.

He believes engineering expertise, digital tools, and data driven approaches will play an increasingly important role in helping clients achieve meaningful carbon reduction and energy efficiency goals.

For him, the future is about delivering solutions that are not only innovative, but also practical, measurable, and capable of creating lasting value.

After 12 years with AtkinsRéalis, that focus on continuous improvement, both for buildings and for people, remains at the heart of what motivates him.

Building a career with purpose

Over the past 12 years, Siu Hang has grown from an Assistant Engineer into an Associate Technical Director, taking on greater responsibility while continuing to learn and develop.

For him, one of the most rewarding parts of a career at AtkinsRéalis is the opportunity to work on meaningful challenges, collaborate with talented colleagues, and see ideas translate into measurable results.

If you're looking for a place where you can build expertise, develop your career, and help create more sustainable outcomes for the future, AtkinsRéalis could be the place for you.

Explore our current opportunities and discover where a career at AtkinsRéalis could take you.