Commercial Manager

Sizewell C; City of Westminster; Hybrid; GBP 60,000 - 80,000; Full time

Job summary

A major infrastructure firm in the UK is seeking a Commercial Manager to oversee the commercial management of complex contracts in Design, Engineering, and Construction. The successful candidate will manage contract administration, engage with suppliers, and produce detailed cost reports, while mentoring junior staff. The role offers hybrid working, competitive salary with benefits, and opportunities for progression within a collaborative team environment. Ideal candidates will have solid contract management experience and possibly chartered status.

Benefits

Hybrid working with flexibility

Competitive salary, bonus and benefits

Clear progression and development opportunities

Supportive, collaborative team environment

Qualifications

• Solid experience on major programmes or multi-discipline projects.
• Strong understanding of NEC3/NEC4 or FIDIC contracts.
• Proven experience in a commercial or contract management role.

Responsibilities

• Lead all commercial and contract management activities for complex projects.
• Administer NEC3/NEC4 or FIDIC contracts.
• Manage supply chain engagement and contract negotiations.

Skills

Contract management

Stakeholder management

Analytical skills

Negotiation skills

Education

Degree in Quantity Surveying, Commercial Management or Engineering

Chartered status (RICS, ICE, CICES, IOB, CIPS)

Tools

CEMAR

SAP

Oracle

Job description

As Commercial Manager you will join our Supply Chain team and take ownership of the commercial management of Design, Engineering, and Construction contracts. You'll work closely with Programme Delivery, Finance, Legal, and suppliers to ensure contracts deliver on cost, quality, and schedule.

Responsibilities

• Lead all commercial and contract management activities for complex projects.
• Administer NEC3/NEC4 or FIDIC contracts, including drafting clear contract documentation.
• Manage supply chain engagement, including procurement, subcontractor quotation reviews, and contract negotiations.
• Produce accurate cost reports, forecasts, and budgets, ensuring robust cost assurance.
• Represent the project in client‑facing commercial meetings.
• Mentor and guide Assistant Commercial Managers and junior team members.
• Support project controls and reporting using systems such as CEMAR, SAP, Oracle, or similar.

Qualifications

• Solid experience on major programmes or multi‑discipline projects.
• Strong understanding of NEC3/NEC4 or FIDIC contracts and contract administration responsibilities.
• Proven experience in a commercial or contract management role.
• Excellent numerical and analytical skills with the ability to produce accurate cost reports.
• A clear self‑starter, confident in taking ownership and seeking additional responsibility.
• Ideally Chartered status (RICS, ICE, CICES, IOB, CIPS or equivalent) or working towards it.
• Stakeholder management and negotiation skills.

Nice‑to‑haves

• Ideally Degree‑qualified in Quantity Surveying, Commercial Management or Engineering or related field.
• Experience in nuclear or regulated industries.
• Understanding of the UK nuclear regulatory environment and supply chain landscape.
• Familiarity with safety case and licence conditions in nuclear.
• Familiarity with project controls systems (CEMAR, SAP, Oracle).

Benefits

• A major infrastructure project with national impact.
• Hybrid working with flexibility built in.
• Competitive salary, bonus and benefits.
• Clear progression and development opportunities.
• Supportive, collaborative team environment.

Behavioural Competences

• Humility: Recognise the value brought from different cultures and experiences; Be open to others' points of view and ideas, be willing to debate and to compromise.
• Positivity: Positively challenge poor quality and performance; Identify solutions at the lowest possible level; Encourage tier‑1s and others to bring new ideas forward.
• Respect: Value the rules and environment in which we operate; Give and receive feedback with respect; Embrace and engage with new people and ideas.
• Solidarity: One team, working closely together and helping each other; Empowered teams always looking forward; Shared responsibility for delivery the project outcomes.
• Clarity: Communicate clearly and consistently; Promote collaboration and team alignment; Clearer and faster decision making; Drive simplification at all levels.