Commercial Manager

Company: Amentum Services
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Job Description:

Overview

In this role you drive the commercial management of contracts across the full lifecycle for Sizewell C and other nuclear projects. You will shape procurement, contract performance, governance, and supplier relationships in a highly regulated environment. You’ll work with cross-functional teams to deliver safe, high-quality, on-time outcomes while supporting net-zero and energy security goals. This is a chance to influence major programmes through strategic contracting and stakeholder collaboration.

Pay / Benefits

  • free single medical cover
  • digital GP service
  • enhanced parental leave pay
  • employee assistance and parental programmes
  • reimbursement towards professional development and memberships
  • hybrid, part-time and flexible working arrangements

Responsibilities

  • Manage commercial aspects of contracts from pre-award to close-out
  • Support procurement activities including ITTs, tender evaluations, negotiations, and contract award
  • Administer NEC/FIDIC contracts including change control, claims, risks, and reporting
  • Build and maintain supplier, contractor, and stakeholder relationships
  • Ensure compliance with SZC governance processes and business objectives
  • Produce commercial dashboards, reports, and contract records
  • Support and develop Supply Chain Assistants
  • Collaborate with Procurement, Legal, Project Controls, and Delivery teams

Key requirements

  • Strong commercial and contract management experience on major projects
  • Knowledge of NEC and FIDIC contracts
  • Experience with procurement, negotiation, contract administration, claims, and risk management
  • Strong stakeholder management, communication, and influencing skills
  • Sound financial and commercial decision-making capability
  • Understanding of UK regulatory and construction environments
  • Experience in regulated sectors such as nuclear, energy, infrastructure, or construction (desirable)
  • stakeholder management
  • communication
  • influencing abilities
  • NEC contracts
  • FIDIC contracts
  • procurement processes

…

Posted: October 11th, 2026