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We are supporting a major contractor delivering critical tunnelling and civils packages on the Sizewell C project. As part of the TBM drive team, we are seeking an experienced Sub Agent to lead technical delivery, coordinate subcontractors, and ensure safe, efficient execution of complex underground works.

The Role

As Sub Agent, you will play a pivotal role in managing the technical and planning elements of the TBM drive and associated civil works. Responsibilities include:

Developing detailed methodologies, work packages, and sequencing for TBM and associated civils.

Reviewing design information, producing clear method statements, and ensuring buildability.

Solving problems at source—creating workable, practical solutions for engineering, logistics, and interface challenges.

Conducting daily reviews of TBM progress, segment installation, materials flow, gantry operations, and tunnel logistics.

Leading coordination with subcontractors (tunnelling, M&E, civils, segment supply, logistics).

Overseeing documentation including RAMS, ITPs, permits, shift reports, and TBM assurance records.

Ensuring works are delivered safely, efficiently, and in accordance with programme and quality requirements.

Supporting Site Engineers with technical queries, survey needs, temporary works, and detailed execution planning.

Managing interfaces across TBM, deep excavation, FRC structures, utilities diversions, and surface civils as required.

About You

Strong experience as a Sub Agent or Senior Engineer in tunnelling, TBM drives, SCL, or major underground works.

Exceptional attention to detail, especially in planning, documentation, QA, and shift records.

Proven experience writing detailed methodology, technical work packs, and construction sequencing.

Confident in generating practical engineering solutions in pressured site environments.

Experienced in managing subcontractors, overseeing daily coordination, and maintaining productive working relationships.

Background in heavy civils: FRC, deep drainage, earthworks, utilities, and complex temporary works.

Strong communication skills with the ability to interface across engineering, delivery, designers, and client teams.

Qualifications: CSCS, SMSTS, TWC/TWS desirable, tunnelling safety training (TSTS) advantageous