Senior / Lead Quantity Surveyor – Hyperscale Data Centre – West London
Salary/Package: Up to £110,000 all-in + pension, private medical and discretionary bonus
O’Neill and Brennan are currently working with a reputable main contractor who have an excellent pipeline of projects within the data centre sector and are looking to appoint an experienced Senior / Lead Quantity Surveyor to take commercial responsibility for a hyperscale data centre project in West London.
They are seeking a commercially astute Quantity Surveyor with a strong background in delivering large-scale projects within a main contracting environment. Previous data centre experience is not essential, making this an excellent opportunity for someone from a major construction, industrial or technically complex project background to move into one of the fastest-growing sectors in the industry.
Experience working on steel frame structures, industrial developments and major M&E packages would be advantageous, although the business is open to candidates with broader large-scale main contracting experience who can demonstrate strong commercial management capabilities.
With a solid pipeline of secured and upcoming work within the data centre space, the business can offer long-term career prospects, exposure to technically challenging projects and the opportunity to play a key role in the delivery of a major hyperscale development.
Role Overview:
- Title: Senior / Lead Quantity Surveyor
- Projects: Hyperscale data centre developments
- Location: West London
- Project Scale: Large-scale, technically complex construction project
- Salary/Package: Up to £110,000 all-in, plus pension, private medical and discretionary bonuses
- Type: Permanent
- Start: ASAP, although the business can wait for the right candidate
Responsibilities:
- Take commercial responsibility for allocated work packages or the wider project, depending on experience and seniority.
- Manage the commercial lifecycle from procurement and subcontract negotiation through to valuations, variations and final accounts.
- Lead subcontractor procurement, tender analysis, package reviews and commercial negotiations, ensuring value for money and appropriate risk allocation.
- Prepare and manage monthly CVRs, cost reports, forecasts, budgets and cash flow projections.
- Monitor project costs, profitability, commercial risks and opportunities, implementing appropriate measures to protect margins.
- Manage variations, change control, compensation events where applicable and contractual correspondence.
- Work closely with the Project Director, Project Manager, site teams and wider commercial function to support successful project delivery.
- Review subcontractor applications for payment, valuations and final accounts, ensuring accuracy and contractual compliance.
- Identify commercial risks, scope gaps and opportunities throughout the project lifecycle, providing clear recommendations to senior management.
- Maintain strong relationships with clients, consultants, subcontractors and suppliers.
- Support and mentor junior Quantity Surveyors and contribute to the development of the wider commercial team where appropriate.
- Ensure robust commercial governance, reporting and contractual procedures are maintained throughout the project.
Requirements:
- Proven experience as a Senior Quantity Surveyor, Lead Quantity Surveyor or an experienced Quantity Surveyor ready to step up within a main contracting environment.
- Demonstrable experience working on large-scale construction projects for a main contractor is essential.
- Strong commercial management experience, including procurement, subcontract administration, CVRs, forecasting, valuations, variations and final accounts.
- Experience managing significant subcontract packages and negotiating commercial agreements.
- A strong understanding of construction contracts, commercial risk management and cost control.
- Ability to take ownership of commercial packages, manage competing priorities and work effectively alongside operational delivery teams.
- Excellent communication, negotiation and stakeholder management skills.
- Experience on steel frame structures, industrial developments, major M&E packages or other technically complex projects would be advantageous but not essential.
- Previous data centre experience is welcome but not essential; candidates from other large-scale main contracting sectors are encouraged to apply.
- A degree or relevant qualification in Quantity Surveying or a related discipline alongside hands on experience would be advantageous.
- Right to work in the UK.
Package & Opportunity:
- Salary/package of up to £110,000 all-in.
- Pension provision and private medical cover.
- Discretionary bonus scheme.
- Opportunity to join a reputable main contractor with a strong pipeline of data centre projects.
- Take a leading commercial role on a hyperscale data centre development in West London.
- Long-term opportunities for career progression within a growing and technically demanding sector.
- Opportunity to transition into the data centre market without needing previous sector-specific experience.
If you're a Senior or Lead Quantity Surveyor with strong main contracting experience looking to work on a major hyperscale data centre project, please contact Ned Scott-Mends on 07552 619 663 to discuss the opportunity in confidence.

O’Neill and Brennan values diversity and promotes equality, All individuals will be treated in a fair and equal manner and in accordance with the law regardless of gender, marital status, race, religion, colour, age, disability or sexual orientation