Sub Agent

Smart4 EPC; Brackley; On-site; GBP 42,000 - 62,000; Full time

Job summary

Smart4 EPC is recruiting an experienced Sub Agent to support delivery of structural civil works on a major HS2 project in Northamptonshire. You will work with the Site Agent and project team to ensure works are safe, on programme, and to the highest standards.

This role focuses on viaducts and reinforced concrete structures, with day-to-day site coordination, subcontractor management, and adherence to drawings, specs and method statements.

Qualifications

• Proven experience as a Sub Agent or Assistant Site Agent on structures-led civils projects.
• Strong background in viaducts, bridges, or reinforced concrete structures.
• HS2 experience desirable but not essential.
• SMSTS and CSCS (essential).

Responsibilities

• Support the Site Agent in the delivery of structural and viaduct works.
• Manage day-to-day site activities, subcontractors, and engineers.
• Ensure works are delivered in line with drawings, specifications, and programme.
• Maintain high standards of health & safety, quality, and environmental compliance.
• Assist with planning, short-term programming, and method statements.
• Coordinate with engineers, designers, and the temporary works team.
• Contribute to progress reporting and site documentation.

Skills

Sub Agent experience

Leadership

Site coordination

Job description

We areworking with a leading Tier 1 contractor on the HS2 project in Northamptonshire and is seeking an experienced Sub Agent with a strong structures background to support the delivery of complex civil engineering works.

The Role: You will play a key role in the delivery of major structural works, including viaducts and associated concrete structures. Working closely with the Site Agent and wider project team, you will help ensure works are delivered safely, on programme, and to the highest quality standards.

Key Responsibilities

• Support the Site Agent in the delivery of structural and viaduct works
• Manage day-to-day site activities, subcontractors, and engineers
• Ensure works are delivered in line with drawings, specifications, and programme
• Maintain high standards of health & safety, quality, and environmental compliance
• Assist with planning, short-term programming, and method statements
• Coordinate with engineers, designers, and the temporary works team
• Contribute to progress reporting and site documentation

About You

• Proven experience as a Sub Agent or Assistant Site Agent on structures-led civils projects
• Strong background in viaducts, bridges, or reinforced concrete structures
• Experience working on major infrastructure or Tier 1 projects
• HS2 experience is desirable but not essential
• SMSTS and CSCS (essential)
• Strong leadership, communication, and organisational skills