Senior Commercial Manager

ISS Facility Services UK; Weybridge; Hybrid; GBP 70,000 - 90,000; Full time

Job summary

ISS Facility Services UK is seeking an experienced Senior Commercial Manager to lead the commercial management and administration of Government contracts, ensuring compliance and successful delivery. The role collaborates with operations, finance, procurement, and project teams across a complex contract environment.

The successful candidate will have NEC4 expertise, strong contract management skills, and the ability to engage multiple stakeholders while driving financial performance and risk

Qualifications

• Proven experience in commercial contract management.
• Experience in FMC contracts.
• Strong NEC4 knowledge and application.
• Experience handling multiple stakeholder groups.

Responsibilities

• Manage Government contracts and ensure compliance with terms.
• Maintain contract records, correspondence and information.
• Monitor performance against milestones and KPIs.
• Prepare notices, change requests, variations and claims.
• Ensure documentation is uploaded and organized in client systems.
• Support financial management including budgeting and forecasting.
• Build relationships with internal/external stakeholders (finance, procurement, project teams).
• Identify commercial risks and implement mitigation per NEC4 requirements.

Skills

Contract management

NEC4

Stakeholder management

Financial reporting

Education

Quantity Surveying degree

Job description

ISS Facility Services UK are seeking an experienced Senior Commercial Manager to take responsibility for the commercial management and administration of Government contracts, ensuring effective commercial stewardship, contract compliance, and successful delivery of contractual obligations.

This role plays a key part in maintaining robust commercial processes, managing stakeholder relationships, and supporting financial and contractual performance across a complex contract environment. The successful candidate will work closely with operational, finance, procurement, and project teams to ensure commercial obligations are met and risks are effectively managed.

The position requires an experienced commercial professional with a strong understanding of contract management within the facilities management sector, supported by NEC4 expertise and the ability to operate effectively across multiple stakeholder groups.

The role offers location flexibility, with attendance in Weybridge required once per week.

Key Responsibilities

• Manage Government contracts and ensure compliance with agreed contractual terms and conditions.
• Maintain accurate and up-to-date contract records, documentation, correspondence, and associated information.
• Monitor contract performance against key milestones, deliverables, and performance indicators.
• Prepare and submit contractual notices, change requests, variations, and claims where required.
• Ensure all contract documentation is correctly uploaded, organised, and maintained within client systems.
• Support financial management activities including cost tracking, budgeting, forecasting, and contract performance reporting.
• Build and maintain effective working relationships with internal and external stakeholders, including project teams, contractors, subcontractors, procurement, and finance functions.
• Identify commercial risks, assess potential impacts, and implement appropriate mitigation strategies while ensuring compliance with NEC4 requirements and relevant regulations.

Person Specification

• Proven experience in commercial contract management, preferably within the facilities management industry.
• Strong experience supporting the delivery of FMC contracts.
• Sound knowledge and practical experience of the NEC4 contract framework.
• Background in Quantity Surveying, Commercial Management, or a related commercial discipline.
• Ability to interpret and manage complex contractual documentation and obligations.
• Strong analytical skills with the ability to collate, assess, and present commercial data, management information, and commercial notices.
• Excellent communication and interpersonal skills with the ability to influence and engage a broad range of stakeholders.
• Highly organised with strong attention to detail and contract administration capability, with experience working collaboratively across finance, procurement, operational, and project teams.

The Company

ISS is a global leader in workplace and facilities management, helping organisations create environments where people and businesses can thrive. We partner with clients across sectors—from healthcare to finance—to deliver smart, sustainable solutions that improve everyday experiences.

We’re proud to be an inclusive employer, committed to diversity, wellbeing, and supporting the Armed Forces community.

As a Disability Confident employer, we’re committed to making our recruitment process accessible. If you require any adjustments, please contact our Resourcing Team—we’ll be happy to support you.

Join ISS and be part of something bigger.