Balfour Beatty plc
Marine Sub Agent - Sizewell C

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About The Role
The Civil Works Alliance (CWA) is delivering the critical civil works for the Sizewell C nuclear power plant project. Within the Marine and Tunnel (M&T) portion, we are seeking a Sub Agent to join our marine preconstruction team in London initially ahead of mobilisation to Suffolk.
This role offers the opportunity to be part of a dynamic alliance of world-class contractors, working on one of the UK’s most significant infrastructure projects.
Reporting to the Marine Preconstruction Manager for the Marine and Tunnel Portion, the Sub Agent will play a key role in developing construction methods, assessing delivery risks and opportunities, and ensuring readiness for offshore dredging, rock placement, heavy lifting, monopile installation, drilling and grouting campaigns in the North Sea.
What you'll be doing
- Coordinate subcontractor Early Contractor Involvement (ECI) activities for a defined section of the works, ensuring outputs are delivered in line with project requirements.
- Develop construction methodologies and undertake constructability reviews for Marine Construction Activities, including:
- Onshore work hubs and muster ports supporting offshore operations
- Marine logistics, vessel navigation and mooring arrangements
- Heavy lifting and transportation operations
- Large diameter drilling and piling activities
- Grouting operations
- Review and assess proposed construction solutions, identifying impacts on safety, programme, cost, and risk.
- Identify and manage risks and opportunities associated with the section of works.
- Develop scopes of work and technical requirements for subcontract tender packages and support procurement activities, including subcontractor evaluations.
Who we're looking for
Essential
- Experience within a marine or preconstruction environment.
- Experience working within a contractor or principal contractor organisation on engineering or construction projects.
- Good appreciation of programme, cost, and risk considerations during project planning and delivery.
- Strong organisational skills, with the ability to manage multiple tasks and interfaces simultaneously.
- Effective communication skills and the ability to work collaboratively with colleagues, designers, subcontractors, and clients.
- Ability to take ownership of assigned tasks and deliver them with limited supervision.
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Desirable
- Experience of marine operations, offshore construction, ports, coastal, or major infrastructure projects.
- Familiarity with the Construction Design and Management Regulations 2015 (CDM).
- Experience contributing to subcontractor procurement and tendering activities.
- Understanding of marine logistics, vessel operations, or offshore construction techniques.
- Professional accreditation or working towards chartership with a relevant institution.
- Relevant qualifications such as SMSTS, SSSTS, BOSIET, GWO.
Why work for us
Day in, day out, our teams deliver some of the UK’s most ambitious, exciting, and meaningful projects; developing, building, and maintaining the vital infrastructure that supports national economies and strengthens communities.
Why join us?
Benefits
As if contributing to and supporting work that makes life better for millions wasn’t rewarding enough, we offer a full range of benefits too. You’ll have the freedom to shape the package that’s right for you and your life. Here are some of our key benefits:
- Smart working, giving you more flexibility such as staggered start and finish times, with up to 40% remote working, where roles allow.
- 25 days paid annual leave (pro rata)
- Family-friendly policies which include 28 weeks full pay for maternity/adoption leave and four weeks full pay for paternity/partners leave
- Pension, share incentive plan, volunteering leave, recognition schemes, and much more…
About Us
Balfour Beatty’s Major Projects business is delivering some of the UK’s most complex and iconic infrastructure projects including HS2, the new high-speed railway, and the first nuclear power station in a generation, Hinkley Point C. Using the latest technology, we’re driving productivity and creating a lasting legacy by delivering sustainable solutions that strengthen communities.


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Diversity and inclusion
At Balfour Beatty we believe that diversity and inclusion are essential components of any successful, happy workplace. Through our Value Everyone Diversity and Inclusion Strategy and Action Plan, we are growing our diverse workforce and developing our inclusive culture where everyone is able to thrive and reach their full potential, regardless of their identity or background. To find out how we are making this a reality, visit www.balfourbeatty.com/diversityandinclusion
To help and support us with our desired commitment to create an inclusive culture we are members of WISE, enei, Business Disability Forum, and the Association for Black and Minority Ethnic Engineers (AFBE). In 2020, we signed the Audeliss and Involve Open Letter to demonstrate our commitment to taking key long-term and sustainable actions on Black Inclusion. Balfour Beatty is also a Gold Award holder in the Ministry of Defence 'Employer Recognition Scheme' and actively encourage applications from Armed Forces personnel, veterans, and reservists.
As a Disability Confident Employer, we are committed to working with people who have disabilities and long-term health conditions to remove barriers for them in obtaining employment. We are also committed to offering applicants with a disability an interview if they meet the minimum requirements for the role. For more info, visit: https://disabilityconfident.campaign.gov.uk/
We are looking to continually improve our resourcing process and ensure that it is fair and inclusive for all. If you have any feedback on the process, please share this with us at: candidaterecruitmentqueries@balfourbeatty.com
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