Assistant Commercial Manager

2 days ago

London, Greater London, United Kingdom Venesky Brown Full time

Overview

Sizewell C is a new build nuclear plant in Suffolk. They are currently looking for a motivated and detail-driven
Assistant Commercial Manager
to join a high-performing team delivering the largest single contract in the country. This is a unique opportunity to develop core commercial skills within a fast-paced environment, working alongside experienced professionals who set industry-leading standards. With the right attitude and commitment, this role offers exceptional potential for long-term career growth.

This is a contract role with hybrid working from either Suffolk or London offices.

Key Responsibilities

  • Support the commercial team in managing cost, contract, and financial activities across major infrastructure works.
  • Assist with drafting and preparing basic contract documentation, including instructions, variations, and payment assessments, under supervision.
  • Contribute to monthly cost reporting, budget tracking, and forecasting using established processes and systems.
  • Maintain accurate commercial records and data, ensuring strong attention to detail and compliance with internal procedures.
  • Support the assessment and administration of supplier and subcontractor payments.
  • Develop strong working relationships with project teams, suppliers, and stakeholders to facilitate smooth commercial operations.
  • Assist in monitoring contract performance, identifying risks, and supporting mitigation actions.
  • Continuously build commercial, contractual, and technical knowledge, taking on greater responsibility as experience grows.

Core Requirements

  • Degree-qualified in
    Quantity Surveying, Commercial Management, Engineering
    , or a related discipline.
  • 1–3 years' experience
    in a commercial, quantity surveying, project controls, or contract administration role.
  • Experience or exposure to
    infrastructure or construction
    projects preferred.
  • Enthusiastic, proactive, and eager to learn—someone who quickly absorbs information and is motivated by professional development.
  • Strong organisational skills with excellent attention to detail and confidence managing data.
  • Ability to prepare basic commercial documents and reports under guidance.
  • SAP experience
    is advantageous (or familiarity with other cost/project management systems).

Additional Attributes

  • Early understanding of
    NEC contract
    principles or willingness to undertake formal training.
  • Strong
    Excel
    capability and a foundational understanding of commercial reporting.
  • Ability to build positive, effective working relationships with colleagues and external partners.
  • A growth mindset and willingness to take on increasing responsibility as competence develops.

What's on Offer

  • Opportunity to work on the
    largest single contract in the country
    , gaining exposure to industry-leading commercial management practices.
  • Long term contract role
  • A high-performing, supportive team focused on excellence and continuous improvement.
  • Mentorship from seasoned professionals and access to structured development pathways.
  • A dynamic, challenging environment that accelerates learning and opens doors for significant career progression.

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