Job Title: Offshore Marine Site Agent / Sub Agent – Fish Return Tunnel System, Hinkley Point C
Location: Hinkley Point C, Somerset
Contract Type: Permanent / Long-term Contract
Sector: Offshore Marine Civil Engineering / Major Infrastructure
Shift Pattern: 14 days on, 7 days off
About the Role
An exciting opportunity has arisen for an experienced Marine Site Agent / Sub Agent to join the delivery team working on the Fish Return Tunnel System at Hinkley Point C — one of Europe’s most complex and high-profile infrastructure projects.
The role will involve overseeing the construction of key elements of the marine civil engineering works, including in-situ concrete structures, marine outfall connections, tunnel interfaces, and associated temporary works within a challenging tidal environment.
This position is ideally suited to an engineer with a strong background in marine or heavy civil construction, who can effectively coordinate site operations, manage multidisciplinary teams, and drive performance across safety, quality, and programme.
Key Responsibilities
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Lead and coordinate all site activities associated with the Fish Return Tunnel System, including marine concrete works, shaft interfaces, and installation of fish return structures.
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Manage the interface between the marine works, tunnelling operations, and onshore civils, ensuring alignment with programme and design intent.
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Plan and oversee site operations to ensure compliance with project specifications, quality standards, and environmental controls.
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Supervise and support engineers, foremen, and subcontractors, promoting a collaborative and safety-focused culture.
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Liaise closely with design, engineering, and client teams to address technical challenges and deliver effective solutions.
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Ensure that all works comply with CDM Regulations, method statements, risk assessments, and environmental management plans.
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Monitor and report on progress, productivity, and resource utilisation against budget and programme.
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Contribute to testing, commissioning, and integration activities associated with the fish return tunnel and marine systems.
Experience & Qualifications
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Degree or HNC/HND in Civil Engineering or a related discipline.
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Demonstrable experience in marine, coastal, or offshore civil engineering projects, ideally on major UK infrastructure schemes.
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Strong understanding of marine construction techniques, temporary works, and safe working within a tidal or confined environment.
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Experience managing or supervising marine structures, cofferdams, or outfall systems highly desirable.
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Strong communication and leadership skills with the ability to drive safe and efficient delivery.
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CSCS, SMSTS, and First Aid at Work certifications required.
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Experience working within environmentally sensitive marine zones and familiarity with MMO or EA requirements advantageous.
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Previous involvement on large infrastructure projects such as HPC, Thames Tideway, or similar would be beneficial.