Assistant Commercial Manager

Assistant Commercial Manager
Water & Environment
Are you looking to build your commercial career in a fast-paced, purpose-driven environment? We are seeking an enthusiastic and detail-oriented Assistant Commercial Manager to support the delivery of high-value infrastructure programmes across the Water & Environment sector, with opportunities to contribute to projects in Defence and Nuclear. This is a fantastic opportunity to gain hands-on experience, learn from industry leaders, and grow within a collaborative and forward-thinking organisation.
Your Role & Impact
Reporting to the Water Cost and Commercial Lead, you''ll assist in the commercial management of multi-workstream programmes-supporting procurement, contract administration, and post-contract delivery. You''ll work closely with project managers, cost consultants, and supply chain partners to ensure financial accuracy, compliance, and performance across all phases of the project lifecycle.
Key Responsibilities:
Commercial Delivery & Contract Support
- Assist in administering NEC3/4 ECC contracts (Options A, C & E)
- Support supplier performance tracking, risk mitigation, and contract execution
- Help maintain commercial records and ensure compliance with UK regulations
Project & Cost Management
- Contribute to feasibility studies, benchmarking, and value management
- Assist with cost planning, estimating, and post-contract cost control
- Support valuations, change control, and final account preparation
Stakeholder Engagement & Process Improvement
- Act as a reliable interface with clients, consultants, and internal teams
- Help maintain lessons learned databases and commercial reporting tools
- Contribute to continuous improvement across commercial processes
What You Bring
- Experience in commercial management or quantity surveying within infrastructure or engineering
- Strong analytical and financial modelling skills
- Familiarity with NEC3/4 contracts and CDM regulations
- Excellent communication and stakeholder engagement abilities
- Progress toward RICS chartership or equivalent professional development
- Valid CSCS card; Water Hygiene Card desirable
- Willingness to work on-site at least 3 days per week
RG Setsquare is acting as an Employment Agency in relation to this vacancy.