Assistant Sustainability Manager - Carbon Modeller

Mace combines construction expertise with consultancy to unlock potential in every person or project and redefine the boundaries of ambition. Our values shape the way we consult and define the people we want to join us on our journey.

This role supports carbon modelling for a major infrastructure programme, collaborating with design, engineering and client teams to drive low‑carbon innovation and PAS 2080 compliance. It helps deliver the programme’s carbon strategy, embeds sustainability across all phases, and contributes to Mace’s Pursue a Sustainable World ambition through knowledge‑sharing and upskilling.

Please Note: This role requires traveling to site 2-3 days per week in Peterborough, flexible work from home other days. Travel allowance and car allowance paid with package.

• Supporting client‑facing sustainability and climate‑change activities.
• Managing carbon modelling and reporting for innovation opportunities.
• Embedding carbon in design, procurement and delivery.
• Applying whole‑life carbon principles to project development.
• Analysing baselines, emissions and reduction opportunities.
• Delivering accurate monthly carbon reporting.
• Supporting environmental considerations in design.
• Driving innovation, work‑winning and strong client relationships.

• Degree in sustainability or environmental discipline, with strong carbon‑modelling experience.
• Knowledge of PAS 2080, ISO 14001 and UK environmental regulations.
• Skilled in translating technical topics and driving sustainable behaviours.
• Strong communication, problem‑solving and stakeholder engagement skills; professional membership desirable.

Safety first - Going home safe and well: We champion a safe, diverse and inclusive working environment, understanding the importance of wellbeing in every team.

Client focus - Deliver on our promise: We own the quality of deliverables, strategic outcomes and build long term relationships with our clients.

Integrity - Always do the right thing: We influence positive outcomes within our industry, while always aligning with our compliance obligations.

Create opportunity - For our people to excel: We champion a continuous improvement culture throughout all activities, inspiring our people and teams to develop.

Mace is an inclusive employer and welcomes interest from a diverse range of candidates. Even if you feel you do not fulfil all the criteria, please apply as you may still be the best candidate for this role or another role within our organisation.

We are also open to discussing part time, flexible, and hybrid working options if suitable with‑in the role.