Senior
Commercial Manager
Job Description
Overview
The Commercial Manager is responsible for commercial and financial management across a portfolio of projects delivered under NEC4 contracts. The role ensures robust cost control, forecasting, change management, and contract compliance, while supporting Project Managers and Directors to deliver projects to time, cost and contractual obligations.
The role operates across multiple simultaneous commissions, providing consistency of approach to financial governance, contract administration, risk management and reporting, and acting as a trusted commercial adviser to both internal teams and external stakeholders.
Your role
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Lead the commercial management of NEC4 contracts (including PSC and ECC as applicable), ensuring contractual processes are applied consistently and correctly across projects.
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Manage and administer contractual mechanisms including Early Warnings, Compensation Events, change control, programme impacts and entitlement assessments.
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Provide commercial advice and challenge to Project Managers on contract risk, compliance, and commercial strategy.
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Support preparation, review and agreement of contractual correspondence, notices, assessments and records. Maintain a clear audit trail demonstrating compliance with contract conditions and agreed procedures.
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Establish and maintain robust financial controls across a live portfolio of projects, ensuring consistency in cost management and reporting.
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Manage project budgets, forecasts, cashflow and earned value, identifying variances and risks at an early stage. Produce accurate, timely and reliable monthly financial reports at portfolio / department level.
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Support period‑end processes, including accruals, revenue recognition and reconciliation with financial systems. Lead commercial change management, ensuring that scope changes are identified early, assessed correctly and implemented in line with NEC4 procedures.
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Maintain commercial risk and opportunity registers, working with Project Managers to develop mitigation strategies.
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Assess the commercial implications of programme changes, scope growth, resourcing variations and client instructions. Support resolution of commercial issues and disputes through structured, evidence‑based approaches.
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Work closely with Project Managers, Project Directors and discipline leads to embed strong commercial behaviours across project teams.
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Act as a key commercial interface with clients and supply chain partners, supporting transparent and professional engagement. Support negotiations and agreement of commercial matters while protecting the organisation’s contractual position.
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Contribute to a collaborative project culture aligned with NEC principles of mutual trust and cooperation.
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Ensure projects operate in compliance with internal commercial governance, approval thresholds and delegated authorities. Maintain and improve commercial processes, templates and controls to support consistent delivery across the portfolio.
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Support audits and internal reviews by providing clear, well‑maintained commercial records. Capture lessons learned and contribute to continuous improvement of commercial management practices.
About you
Technical Knowledge and Experience
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A Commercial Manager with experience in major programmes and complex infrastructure within construction, engineering, manufacturing, oil and gas or UK Public Sector organisation.
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Degree qualified in Quantity Surveying or a related commercial/construction discipline, or able to demonstrate equivalent knowledge and experience gained through practice.
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Membership, or working towards membership of the Royal Institution of Chartered Surveyors (RICS) or an equivalent recognised body
Essential
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Experience as a Commercial Manager managing projects under NEC4 forms of contract.
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Proven ability to manage financial controls across multiple concurrent projects or programmes.
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Sound understanding of cost management, forecasting, change control and commercial risk.
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Experience supporting Project Managers with commercial strategy and contract compliance.
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Strong analytical skills with the ability to present clear, concise commercial information to senior stakeholders.
Desirable
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Experience working within public‑sector or regulated client environments.
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Familiarity with consultancy‑led professional services contracts.
Rewards & benefits
Explore the rewards and benefits that help you thrive – at every stage of your life and your career. Enjoy competitive salaries, employee rewards and a brilliant range of benefits you can tailor to suit your own health, wellbeing, financial and lifestyle choices. Make the most of a myriad of opportunities for training and professional development to grow your skills and expertise. And combine our hybrid working culture and flexible holiday allowances to balance a great job and fulfilling personal life.
About AtkinsRéalis
We're AtkinsRéalis, a world-class engineering services and nuclear organization. We connect people, data and technology to transform the world's infrastructure and energy systems. Together, with our industry partners and clients, and our global team of consultants, designers, engineers and project managers, we can change the world. We're committed to leading our clients across our various end markets to engineer a better future for our planet and its people.
Additional information
Security clearance
This role may require security clearance and offers of employment will be dependent on obtaining the relevant level of clearance. If this is necessary, it will be discussed with you at interview. The vetting process is delivered by United Kingdom Security Vetting (UKSV) and may require candidates to provide proof of residency in the UK of 5 years or longer. If applying to this role please do not make reference to (in conversation) or include in your application or CV, details of any current or previously held security clearance.
We are committed to creating a culture where everyone feels that they belong - a place where we can all be ourselves, thrive and develop to be the best we can be. So, we offer a range of family friendly, inclusive employment policies, flexible working arrangements and employee resource groups to support all employees. As an Equal Opportunities Employer, we value applications from all backgrounds, cultures and ability. As a Disability Confident Leader, we are committed to offering an interview to all applicants who have a disability and meet the essential criteria. If you would like to be considered under this commitment, please let us know at the application stage.
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Worker Type
Employee
Job Type
Regular
At AtkinsRéalis, we seek to hire individuals with diverse characteristics, backgrounds and perspectives. We strongly believe that world-class talent makes no distinctions based on gender, ethnic or national origin, sexual identity and orientation, age, religion or disability, but enriches itself through these differences.
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