Senior Quantity Surveyor

The Geotechnical Sub Alliance (GSA) is at the forefront of the Sizewell C nuclear power station development - one of the UK’s largest and most exciting infrastructure programmes.

We’re responsible for preparing the foundations of the entire site: designing and constructing cut‑off walls, retaining structures, soil improvements and more. Using advanced geotechnical engineering and world‑class construction technologies, this is a rare opportunity to contribute to a national project that will shape the UK’s clean‑energy future.

The Senior Quantity Surveyor will play a key commercial role within the GSA, supporting the Managing Surveyor in delivering robust commercial governance, accurate cost management, and high‑quality commercial intelligence across assigned work packages.

This role bridges responsibility between delivering commercial outputs directly and providing guidance to Quantity Surveyors within the team. The Senior QS will ensure effective contractual administration, maintain accurate forecasting, and proactively manage risk and opportunity to protect and enhance project value.

• Commercial & Cost Management: Manage commercial activities across work packages by ensuring effective cost control, accurate reporting and forecasting, subcontractor account management, and compliance with commercial procedures while supporting senior stakeholder reporting.
• Contract & Change Management: Administer NEC4 contracts by managing early warnings and compensation events, maintaining robust records, identifying and recording change, and providing commercial advice on contractual obligations and implications.
• Procurement & Supply Chain: Support procurement activities by developing tender documentation, evaluating and negotiating subcontractor agreements, monitoring supplier performance, and driving value for money through effective supply chain engagement.
• Project & Programme Support: Support project delivery by reviewing programme sequencing, enabling digital integration in commercial processes, and collaborating with cross-functional teams to align cost and programme objectives.
• Risk Management & Dispute Avoidance: Identify and mitigate commercial risks and opportunities, maintain strong supporting records, and assist in preparing evidence for claims and dispute avoidance in line with alliance standards.
• Team Support, Leadership & Development: Provide leadership and support to the commercial team through mentoring, reviewing outputs for accuracy, developing team capability, and fostering a positive and collaborative working environment.

• BSc/MSc in Quantity Surveying or equivalent experience.
• Working towards or holding professional membership (RICS, ICES, CIOB).
• Strong analytical skills, attention to detail, and ability to interpret technical drawings.
• Excellent communication and teamwork skills with a focus on achieving results.
• Previous commercial experience and industry knowledge are desirable.

• Previous experience or exposure to NEC Contracts.
• Piling/Civils experience.

When you join the world’s largest specialist geotechnical contractor, you’re part of an international community of over 10,000 experts, based in 31 countries around the world. You’ll have the opportunity to contribute to prestigious, ground‑breaking projects, using the very latest tools and technology to solve complex problems, constantly learn new skills and take your career in any direction.

As well as being part of a landmark project and working in a collaborative alliance environment, we offer:

• Discretionary annual bonus (based on personal/project performance)
• Salary Sacrifice Pension Scheme (min. 5% company contribution)
• Enhanced Sick Pay (after probation)
• Income Protection, Private Medical Insurance and Life Assurance
• Employee Assistance Programme
• 25‑days annual leave + Bank Holidays per year (increasing with service)
• Option to purchase additional annual leave
• Paid annual professional memberships
• Volunteering days
• Professional growth and development

Bachy Soletanche is committed to equal opportunities in employment with the aim of ensuring that everyone who applies to work for us receives fair treatment. We positively encourage applications from suitably qualified and eligible candidates regardless of age, disability, ethnicity, sex, gender identity, sexual orientation, religion or belief and pregnancy/maternity.