Assistant Quantity Surveyor in Middlesex, Ruislip

Assistant Quantity Surveyor Hillingdon, West London (Hybrid Working) Up to £35,000 per annum Are you an experienced Assistant Quantity Surveyor looking for your next challenge in a dynamic, commercially focused environment? We’re working with a well-established business seeking a proactive and detail-oriented professional to join their growing commercial team. The Role As an Assistant QS, you’ll play a key role in maintaining commercial control across multiple contracts. You’ll manage payment applications, oversee contract administration, liaise with clients, and support the implementation of a new pay and bill system. Key Responsibilities Prepare and manage payment applications, ensuring accuracy across timesheets and rates Issue interim valuations (invoices/applications) in line with contract requirements Reconcile payment applications with internal ledgers, investigating and resolving discrepancies Monitor payment progress, notices, certificates, and receipts in collaboration with the credit control team Set up new jobs and update trades/rates in internal systems Raise manual invoices and manage sales ledger exports Administer contracts, including rate changes and volume rebates Liaise with clients to ensure timely and accurate payments Attend project meetings and contribute to commercial reporting Collaborate with internal teams: Commercial, Finance, Payroll, and Operations Provide cover for other commercial assistants when needed Working Hours & Location Monday to Thursday: 8:30am – 5:30pm Friday: 8:30am – 4:00pm Hybrid Working: 4 days in-office, 1 day from home Location: Office-based, approx. 15 mins by bus from the local station Parking: Available – ideal for drivers What We’re Looking For Proven experience in commercial administration, ideally within recruitment or construction Strong ability to manage multiple contracts and communicate confidently with clients Comfortable working with finance systems and supporting process improvements A proactive, solutions-focused mindset with the ability to work independently and collaboratively