Hyperscale Data Centre Quantity Surveyor

Onnec; Greater London; Hybrid; GBP 50,000 - 85,000; Full time

Job summary

ONNEC Group is hiring a Quantity Surveyor to support commercial success across hyperscale data centre projects. You will work with Project Managers, Commercial Managers and Operations to control costs, manage variations, and ensure contractual obligations are met.

The successful candidate will bring proven QS experience in construction, strong contract knowledge (JCT/NEC), and excellent negotiation and stakeholder skills, delivering high-quality outcomes within a fast-paced environment.

Qualifications

• Proven Quantity Surveying experience within a project delivery or construction environment.
• Strong commercial and contractual knowledge including experience with standard forms of contract (e.g., JCT, NEC).
• Excellent negotiation, communication, and stakeholder management skills.
• Commercially aware with the ability to identify risks and opportunities and provide practical solutions.
• Strong organisational skills with excellent attention to detail and ability to manage multiple priorities.
• Proficient in Microsoft Office, including Excel, Word, and PowerPoint.

Responsibilities

• Provide commercial support to project teams, ensuring projects remain compliant, commercially sound, and financially successful.
• Monitor project costs and performance against budget, identify risks and opportunities, and take action as needed.
• Manage variations and changes to scope, prepare and submit quotations, claims, and supporting documentation.
• Support monthly valuations, cost reporting, forecasting, and cost/value reconciliation activities.
• Administer contracts and subcontracts in line with contractual requirements and company procedures.
• Review and interpret contract terms, supporting management of claims and variations to protect margins.
• Build and maintain strong relationships with clients, subcontractors, consultants, and internal stakeholders.
• Collaborate across departments including Commercial, Finance, Legal, Design & Engineering, and Operations.
• Support development and consistent application of commercial processes and best practices.
• Assist with supplier negotiations and other commercial activities as required.
• Contribute to continuous improvement initiatives and special projects as needed.

Skills

Quantity Surveying

Commercial knowledge

Contractual knowledge

Negotiation

Stakeholder management

Organisational skills

Attention to detail

Multitasking

Team collaboration

Client relationships

Tools

Microsoft Office

Job description

ONNEC Group is hiring a Quantity Surveyor to support commercial success across hyperscale data centre projects. You will work with Project Managers, Commercial Managers and Operations to control costs, manage variations, and ensure contractual obligations are met.

The successful candidate will bring proven QS experience in construction, strong contract knowledge (JCT/NEC), and excellent negotiation and stakeholder skills, delivering high-quality outcomes within a fast-paced environment.