Commercial Assistant in Brentwood

Company Overview

The Wiggett Group is a leading provider of electrical, fire and security solutions across the UK, known for our commitment to quality, innovation, and operational excellence. With a strong presence in the social housing sector, we pride ourselves on delivering high-performance projects through collaborative partnerships and a skilled and talented workforce.

Location: Brentwood Head Office

Reports to: Commercial Director

Salary: £32,000 – £35,000

Role Overview

As a Finance & Commercial Assistant, you will play a key supporting role in the day-to-day financial and commercial operations across the group. Working closely with the Commercial Director and wider team, you will help manage supplier and subcontractor accounts. Generating payment applications to clients will be the main aspect of the job, validate and process charges, maintain accurate financial records, and support key processes that ensure cost control, compliance, and strong supplier relationships.

This is an ideal role for someone with a finance or accounts background who is highly organised, detail-oriented, and comfortable working in a fast-paced environment—particularly within the electrical services or construction sector.

Key Responsibilities

Finance & Cost Control

• Validate and check subcontractor and supplier charges before processing for payment
• Maintain accurate financial records for commercial transactions
• Assist with monitoring cost data and escalating discrepancies

Supplier & Subcontractor Coordination

• Maintain and update approved supplier and subcontractor listings
• Support with reviewing and updating rate cards and pricing information
• Liaise with suppliers to gather documentation and resolve queries

Commercial Process Support

• Coordinate application and order processes, ensuring accurate documentation
• Issue commercial certificates and reports

Support internal teams with finance and commercial queries

• Generating payment applications from our internal portal, populating into the correct format, before validating and sending on to the client