Office Manager – Brentford, London (On-Site)

Salary: £35,000 – £39,000 DOE

We’re seeking a highly organised and proactive Office Manager to join our growing team in Brentford. This is a key on-site role at the heart of our operations, ensuring the smooth day-to-day running of the office while supporting our engineers, clients, and wider business functions.

As our business continues to expand across the South West region, this is a fantastic opportunity for an experienced administrator or coordinator to step into a pivotal position where no two days are the same. You’ll play a vital role in maintaining compliance, streamlining office processes, and helping us deliver outstanding service to our clients.

Key Responsibilities

• Coordinate planned and reactive maintenance schedules in line with NSI guidelines and client SLAs.

• Book engineer return visits, manage subcontractor appointments, and monitor efficiency.

• Act as a first point of contact for clients—confirming appointments, resolving scheduling issues, and ensuring service excellence.

• Maintain accurate records in the CRM system, including asset registers, job logs, and client documentation.

• Support quotations, invoicing, and contract administration, ensuring compliance with service agreements.

• Oversee engineer paperwork, timesheets, and escalate any discrepancies.

• Manage the Brentford office facilities, including supplies, equipment, contractors, and general upkeep.

• Ensure the office remains compliant with Health & Safety legislation, including risk assessments, fire safety, and first aid provisions.

• Assist with accreditation processes, including NSI Gold, ISO 9001, and ISO 14001, supporting audits and continuous improvement initiatives.

• Track and manage certification, insurance, and subcontractor renewals.

• Coordinate staff onboarding—from desk setup and access to induction packs.

About You

• Minimum 2+ years’ experience in office management, administration, or coordination (engineering/technical environment preferred).

• Proficient in Microsoft Office with experience using CRM or service management systems.

• Strong organisational skills with the ability to manage multiple priorities in a fast-paced environment.

• Confident communicator, able to liaise effectively across teams, suppliers, and clients.

• Knowledge of compliance, audit, or facilities processes, ideally within a regulated industry.

• Understanding of NSI Gold standards, ISO 9001/14001, or similar frameworks (desirable).

• A proactive problem-solver with excellent attention to detail and the ability to work independently.

What We Offer

• Salary £35,000 – £39,000 DOE

• On-site role based in our modern Brentford offices

• 25 days holiday + bank holidays + your birthday off

• Free on-site car parking

• Health & Wellbeing services

• Cycle to Work scheme

• Career development opportunities within a growing business

If you’re a motivated, detail-driven professional who thrives in a busy environment and enjoys keeping everything running smoothly, we’d love to hear from you.