The Company We are partnering with a renowned main contractor delivering end-to-end services from design strategy through to build delivery, with a strong reputation across the workplace interiors and industrial/warehouse sectors. Operating across both CAT A and CAT B fit-out projects, the company manages schemes valued up to £25 million, offering clients a seamless approach that combines creative design with technical delivery excellence. Their continued growth and success have been driven by their ability to deliver fast-track, high-quality commercial environments for a diverse portfolio of clients in London and the Southeast. The Role Our client is seeking an experienced Freelance Quantity Surveyor to join their London-based commercial team, working on fast-track commercial fit-out schemes. The successful candidate will play a key role in managing project costs, protecting commercial margins, and maintaining strong client relationships, ensuring financial performance and contractual compliance throughout each project. This is a part-time freelance position (2–3 days per week) running until the end of 2026. Roles and responsibilities include but are not limited to: * Manage all commercial aspects of fit-out projects from inception to final account * Prepare, manage, and agree interim valuations and final accounts * Administer and interpret JCT contracts effectively * Lead on procurement and tendering of subcontract packages * Assess and certify subcontractor applications and variations * Provide accurate cost forecasting and cash flow management * Identify, evaluate, and manage commercial risks and opportunities * Work closely with the project delivery team to ensure smooth progress and cost efficiency * Maintain strong, professional client relationships and represent the business in a client-facing capacity