Sustainability Graduate Engineer

Thornton Tomasetti
applies engineering and scientific principles to solve the world's challenges. An independent organization of creative thinkers and innovative doers collaborating from offices worldwide, our mission is to bring our clients' ideas to life and, in the process, lay the groundwork for a better, more resilient future. We provide support and opportunities to our employees to achieve their full potential and cultivate a rewarding career.

The Role
Thornton Tomasetti has an opportunity for a Graduate Sustainability Engineer to join our London office within the Sustainability Practice. The role will involve contributing to a diverse range of projects across the UK and internationally, helping to deliver net zero and circular economy ambitions through a whole life carbon and performance led approach.

The successful candidate will contribute to the design and optimisation of low-carbon, high-performance buildings by analysing energy use, embodied carbon, daylight, comfort, and material impacts. They will help develop integrated sustainability strategies that align seamlessly with architectural, structural, and building services design. This role offers an excellent opportunity for a motivated graduate or early-career professional to gain hands-on experience on projects that exemplify industry leadership in sustainability and resilience.

Responsibilities

• Perform whole-life carbon assessments — including operational and embodied impacts — and develop tailored carbon reduction strategies for projects.
• Contribute to sustainability certification frameworks such as BREEAM, LEED, and the Living Building Challenge through evidence collection and credit coordination.
• Support energy, daylight, comfort, and material performance analyses using digital tools such as Grasshopper, Ladybug Tools, EnergyPlus, and IES.
• Conduct material research and life cycle assessments to guide low-carbon material choices and circular economy strategies.
• Prepare embodied carbon management plans and develop project reporting dashboards.
• Assist in the preparation of GLA Whole Life Carbon Assessments and Circular Economy Statements.
• Participate in sustainable design workshops and charrettes with clients and multidisciplinary design teams.
• Present findings effectively through well-structured reports, diagrams, and presentations.

Requirements

• Bachelor's degree in Engineering, Architecture or Building Science (Masters preferred).
• Interest or experience in energy modelling, embodied carbon, circular economy and sustainable building design.
• Familiarity with whole life carbon tools (e.g. OneClick LCA), and design software such as Rhino, Grasshopper and Revit.
• Knowledge of BREEAM, LEED and Living Building Challenge desirable.
• Some familiarity with Python, parametric workflows or environmental simulation tools (e.g. Ladybug, Honeybee) advantageous.
• Interest in current industry initiatives such as LETI, UKNZCBS and ACAN desirable.

Thornton Tomasetti is proud to be an equal employment workplace. Individuals seeking employment at Thornton Tomasetti are considered without regards to age, ancestry, color, gender (including pregnancy, childbirth, or related medical conditions), gender identity or expression, genetic information, marital status, medical condition, mental or physical disability, national origin, protected family care or medical leave status, race, religion (including beliefs and practices or the absence thereof), sexual orientation, military or veteran status, or any other characteristic protected by federal, state, or local laws.

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