Commercial Assistant

Commercial Assistant

Location: RAF Northolt, West London

Permanent, Full Time

We are seeking a highly organised and detail-oriented Commercial Assistant to join our team supporting a high-profile Ministry of Defence (MoD) Facilities Management contract. Based at RAF Northolt, this is an excellent opportunity for someone looking to develop a long-term career within commercial management, quantity surveying, or finance.

Working closely with Commercial Managers, Quantity Surveyors and operational teams, you will play a key role in supporting subcontractor management, financial administration, billing processes and commercial reporting across the contract.

This role offers a clear career path into Quantity Surveying, Commercial Management and wider commercial leadership roles for ambitious individuals looking to grow within a successful and expanding business.

The Role

As a Commercial Assistant, you will provide essential support to the commercial team, ensuring accurate financial administration, subcontractor management and reporting processes are maintained.

You will be involved in:

• Accounts payable administration
• Reviewing subcontractor applications for payment
• Raising invoices and supporting client billing
• Processing subcontractor invoices
• Supporting month-end activities
• Financial data analysis and reporting
• Maintaining commercial records and documentation
• Assisting with contract administration and compliance

Key Responsibilities

Commercial & Financial Administration

• Process and review subcontractor invoices and applications for payment.
• Raise client invoices and support billing activities across the contract.
• Assist with accounts payable processes and supplier payment administration.
• Support the management of Work in Progress (WIP) and financial reporting.
• Assist in the preparation and review of monthly Cost Value Reconciliation (CVR) reports.
• Monitor commercial data and identify discrepancies or trends for further investigation.
• Provide administrative support for month-end reporting and financial reconciliations.

Subcontractor & Supply Chain Support

• Assist in the preparation and administration of subcontract agreements.
• Support subcontractor onboarding and documentation processes.
• Coordinate subcontractor performance and commercial review meetings.
• Ensure accurate records are maintained to support contract compliance and payment processes.
• Liaise with suppliers and subcontractors regarding invoice queries and commercial documentation.

Systems & Reporting

• Use SAP and SAP Connect to manage commercial and financial transactions.
• Utilise Maximo to support job tracking and asset management activities.
• Produce reports and analyse commercial data using Microsoft Excel.
• Maintain accurate records in line with audit, compliance and contractual requirements.
• Support the preparation of internal and client-facing reports and presentations.

What We're Looking For

• Previous experience in a commercial, finance, accounts payable, billing or administrative support role.
• Strong Microsoft Excel skills, including:
• Pivot Tables
• VLOOKUPs
• Data analysis and reporting
• Excellent organisational skills with a methodical approach to work.
• High level of accuracy and attention to detail.
• Strong communication and stakeholder management skills.
• Ability to work collaboratively across operational and commercial teams.
• Positive attitude and willingness to learn within a commercial environment.