As part of the CWA (Civil Works Alliance), we will support the building of Sizewell C. Sizewell C will be a 3.2-gigawatt power station generating low-carbon electricity for around 6 million homes and will play a key role in our energy future, supplying reliable, clean electricity for at least 60 years.

The CWA is seeking an Marine Agent / Offshore Construction Manager to lead the safe and effective delivery of offshore construction activities as part of a self-delivery team. Acting as the Project Manager's representative at the offshore worksite, the role will coordinate site teams, vessels, marine plant and equipment to ensure works are delivered in accordance with the program, approved methods and technical requirements.

This is an opportunity for an experienced marine construction professional to take ownership of offshore delivery while contributing to one of the UK's most significant infrastructure and energy projects.

What You Will Do

The Offshore Construction Manager will provide visible leadership across offshore operations, coordinating daily activities and maintaining delivery continuity between the worksite, onshore support teams, Offshore Superintendents, vessel crews, client representatives and subcontractors.

The role will champion high standards of health, safety and environmental performance, leading Toolbox Talks, pre-task briefings, safety tours, field audits and behavioral safety initiatives. It will also oversee the production and management of permits, including Hot Works and Confined Space Permits, while supporting incident investigations and the effective management of temporary works.

The role will lead the implementation of technical requirements, resolve construction and delivery issues, support constructability reviews and coordinate marine operations in line with the construction program. It will maintain accurate offshore records, including progress reports, task planning, permits and correspondence.

The Offshore Construction Manager will also contribute to planning, productivity tracking, quality assurance, handover documentation, risk reviews, procurement planning and commercial management. Through clear objectives, coaching and consistent leadership, the role will support the development of high-performing and inclusive teams.

What We Are Looking For

• Proven experience leading offshore or marine construction site operations.
• Typically, 3–5 years' experience in offshore or marine construction delivery.
• Strong understanding of safe systems of work and HSE standards relevant to offshore construction.
• Ability to plan, coordinate and deliver offshore works in line with programs, specifications, method statements and risk assessments.
• Experience producing and managing permits, including Hot Works, Confined Space and Working at Height permits.
• Strong technical understanding and the ability to resolve construction issues in collaboration with design and engineering teams.
• Experience coordinating marine operations, vessels, marine plant, equipment and subcontractors.
• Proven ability to maintain accurate site records, daily progress reports and contractual correspondence.
• Understanding of quality processes, non-conformance management, inspections, audits and handover documentation, including LTQRs.
• Experience tracking productivity and site production using graphical tools and key performance indicators.
• Strong leadership, communication and stakeholder engagement skills.
• Ability to work independently, take ownership of offshore delivery and escalate risks, issues and changes appropriately.
• Experience supporting risk and opportunity reviews, procurement planning and commercial forecasting.
• Formal qualification in construction, engineering, maritime operations or a related discipline, such as an HNC, HND, BSc or BEng, or demonstrable equivalent experience.
• CSCS card and SMSTS, or equivalent HSE site management training.
• Sea Survival certification, such as STCW, OPITO-approved BOSIET or equivalent, or willingness to obtain this during onboarding.
• Current UK driving licence.

The following would also be advantageous:

• Knowledge of NEC or similar contracts.
• Understanding of temporary works coordination.
• Experience producing handover and quality assurance records.
• Experience in marine logistics planning and vessel coordination.
• Experience with marine piling, lifting, survey or diving operations.

What We Will Offer You

The CWA is a single delivery organization made up of the client (Sizewell C) and three parent companies - Balfour Beatty, Bouygues, and Laing O'Rourke - which offers industry-leading packages including market-leading salaries, generous annual leave entitlements, pension scheme, and other flexible benefits.

About Us

The Civil Works Alliance is a single delivery organization bringing together Sizewell C, Balfour Beatty, Bouygues and Laing O'Rourke to deliver the civil works supporting the construction of Sizewell C.

The Alliance combines the expertise, resources and experience of its partners to deliver complex construction activities safely, efficiently and collaboratively. Its work will support the development of critical low-carbon infrastructure while creating opportunities for people and communities across the region.

Diversity Statement

The CWA celebrates the creativity and innovation that comes from a diverse workforce, and we welcome applications from people of all backgrounds — especially those from under-represented communities. Our project is built on five core values: Humility, Positivity, Respect, Solidarity, and Clarity. By joining us, you'll be encouraged to bring your whole self to work, speak up, and share your ideas. We encourage applications from all suitably qualified candidates regardless of gender, race, disability, age, sexual orientation, gender reassignment, religion or belief, marital status, or pregnancy and maternity. We are committed to protecting your privacy. If you decide to apply, please avoid including sensitive personal data in your CV.

If this role sounds like the right fit, click the link below to apply.