Assistant Commercial Manager - Civils

Your new company
You will be joining a global civil engineering consultancy supporting the delivery of one of the UK's most significant major infrastructure programmes, Sizewell C. Operating within a highly integrated project environment, this organisation brings together industry‑leading professionals from project controls, commercial, finance and delivery disciplines. With a strong focus on robust governance, innovation and continuous improvement, this programme offers the opportunity to work at scale, influence outcomes and build a career on a landmark project. As part of their continued growth, they are actively seeking an Assistant Commercial Manager to join their team.

This is a full-time permanent position based on site at Sizewell C (2/3 days per week) with remote working.

Your new role
As an Assistant Commercial Manager, you will work within a dedicated and dynamic cost team, supporting commercial delivery on a major infrastructure programme. This is a highly client‑facing role, ideal for a commercially astute professional who thrives in a fast‑paced project environment and is eager to develop their technical capability and leadership skills.

Your responsibilities will include:

Supporting contract management activities, including drafting correspondence, payment notices, change evaluation and dispute avoidance
Assisting with cost management, including CBS/WBS maintenance, forecasting, accruals, earned value inputs and contractor claim assessment
Providing estimating and cost planning support, including measurement, value engineering and benchmarking
Contributing to planning, reporting and governance, including KPI reporting and commercial performance metrics
Supporting procurement and tendering activities from strategy through to contract award
Assisting with commercial risk management, including risk identification, quantification and mitigation.This role offers excellent exposure across the full commercial lifecycle, supporting long‑term career development.

What you'll need to succeed
In order to be successful, you will bring:

Degree/HNC/HND in Quantity Surveying (or similar) or experience equivalent and membership of a relevant professional body
Proven experience utilising NEC3 and/or NEC4 form of contract within civil engineering with either a contractor or consultancy
Strong analytical skills, attention to detail and problem-solving ability
Ability to work on your own initiative and as part of a wider project team
Full UK driving licence.
What you'll get in return
In return, you will receive:

Starting salary up to £55,000 per annum
27 days' annual leave plus bank holidays and the period between Christmas and New Year
Company pension scheme
Life assurance
Private medical insurance
Family-friendly benefits
Flexible working
Funded professional memberships
Mental health and wellbeing benefits
Fully covered accommodation and business mileage
Supportive and collaborative work environment
Long-term career progression with a well-established and industry-leading civil engineering consultancy
Opportunity to contribute to one of the UK's largest megaprojects and a cornerstone of Britain's Net Zero ambitions and more.
What you need to do now
If you're interested in this role and meet the criteria above, click 'apply now' to forward an up-to-date copy of your CV, or call us now.

If this job isn't quite right for you, but you are looking for a new position, please contact us for a confidential discussion about your career.

Please note: VISA sponsorship is not available with this position.

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