Site Sub Agent: Major Civil Infrastructure Delivery

Millbank; Greater London; On-site; GBP 60,000 - 90,000; Full time

Job summary

Millbank is recruiting an experienced Sub Agent to support a major UK infrastructure programme. You will manage a designated area, coordinate subcontractors and ensure delivery to time, cost and quality targets.

The role requires strong leadership, programme planning, and a proactive safety culture to drive construction excellence on site. You will work closely with Package Manager and client representatives to sustain performance.

Qualifications

• Degree qualification in a relevant Engineering discipline.
• Proven experience working in a similar Sub Agent, Section Engineer or Site Management role on major engineering or construction projects.
• Ability to produce, implement and manage safe systems of work.
• Strong understanding of construction methodologies and site management practices.
• Commercial awareness and understanding of the financial aspects of large‑scale construction projects.
• In‑depth technical knowledge relevant to your area of responsibility.
• Understanding of Contractor responsibilities under CDM Regulations.
• Excellent knowledge of current Civil Engineering practices and legislation.
• Strong understanding of Health, Safety and Environmental requirements within construction environments.
• Ability to effectively manage programmes, resources and subcontractors.

Responsibilities

• Manage a designated area of responsibility to ensure construction activities are delivered safely, efficiently and in accordance with project requirements.
• Ensure construction works are completed in line with approved designs, specifications, standards and health & safety requirements.
• Monitor project costs and provide regular reports identifying budget deviations and corrective actions.
• Support the Package Manager in construction planning, decision‑making and project delivery activities.
• Produce and maintain detailed four‑week look‑ahead programmes and manage works to achieve agreed milestones.
• Monitor progress against programme requirements and provide recovery plans where delays or variances occur.
• Coordinate labour, plant and materials to ensure efficient delivery of the works.
• Review weekly plant, labour and material returns, identifying opportunities to reduce waste and improve productivity.
• Ensure completed work packages are ready for handover to the client.
• Maintain accurate records of site progress, variations and project performance.
• Work closely with commercial teams to review subcontractor applications, records and variation submissions.
• Ensure appropriate competency checks are completed for all personnel, subcontractors and third parties working within the area.
• Stop works immediately where unsafe operations are observed.
• Ensure all temporary works documentation, designs, methods statements and risk assessments are approved before works commence.
• Review and approve Inspection and Test Plans (ITPs), NCRs and quality documentation in line with project procedures.
• Liaise with clients, designers, subcontractors and third‑party stakeholders as required.
• Promote innovation, lessons learned and continuous improvement across the project.
• Support environmental, community and sustainability initiatives.
• Champion a strong safety‑first culture and collaborative team environment.

Skills

Site management

Subcontractor coordination

Programme planning

Health & safety

Commercial awareness

Education

Degree qualification in a relevant Engineering discipline

Job description

Millbank is recruiting an experienced Sub Agent to support a major UK infrastructure programme. You will manage a designated area, coordinate subcontractors and ensure delivery to time, cost and quality targets.

The role requires strong leadership, programme planning, and a proactive safety culture to drive construction excellence on site. You will work closely with Package Manager and client representatives to sustain performance.