Sub Agent

Sub Agent Location: North West London Rate: £500-£600 per day (Inside IR35) Contract Length: 12 months Sector: Rail / Civil Engineering Infrastructure Employer: Tier 1 Main Contractor The Opportunity Our client, a…

Inside IR35 Engineering
Pay rate £500 – £600/day
Contract type Contract
Posted 8 October 2026

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About this contract

Sub Agent

Location: North West London

Rate: £500-£600 per day (Inside IR35)

Contract Length: 12 months

Sector: Rail / Civil Engineering Infrastructure

Employer: Tier 1 Main Contractor

The Opportunity

Our client, a leading Tier 1 contractor, is seeking an experienced Sub Agent to support the delivery of a major rail infrastructure project. This contract opportunity will focus on managing complex construction packages including reinforced concrete works, drainage, structural steel, temporary works, architectural fit-out, shafts and headhouses.

The successful candidate will be responsible for ensuring works are delivered safely, to programme, within budget and in accordance with strict quality requirements on a large-scale rail project.

Key Responsibilities

Support the Agent and Project Manager in delivering key project milestones.

Manage and coordinate site operations, engineering teams and subcontractors.

Oversee construction activities involving:

Reinforced Concrete Structures

Drainage Works

Concrete Walls and Slabs

Structural Steel Installation

Temporary Works

Architectural Fit-Out Packages

Shafts and Headhouses

Ensure all works are delivered in accordance with approved construction methodologies and project requirements.

Review and approve RAMS, ITPs and work package plans.

Monitor progress against programme and implement recovery actions where necessary.

Drive health, safety, environmental and quality performance on site.

Liaise with designers, commercial teams, subcontractors and client representatives.

Support cost control, reporting and change management processes.

Ensure compliance with project specifications, standards and contractual obligations.

Essential Experience

Minimum 10 years' construction or civil engineering experience.

Minimum 5 years' experience operating as a Sub Agent on major infrastructure projects.

Proven experience delivering works within rail, heavy civils, tunnelling or major infrastructure environments.

Demonstrable experience managing:

Construction Fit-Out

Reinforced Concrete

Drainage

Concrete Walls and Slabs

Structural Steel

Temporary Works

Architectural Fit-Out

Shafts and Headhouses

Experience working for Tier 1 contractors on large and complex infrastructure projects.

Strong understanding of construction sequencing, planning, temporary works coordination and subcontractor management.

Ability to manage multiple work fronts and deliver against challenging programme requirements.

Essential Qualifications & Certifications

SMSTS

CSCS Card

Person Specification

Strong leadership and team management skills.

Excellent communication and stakeholder engagement abilities.

Proactive and solutions-focused approach to project delivery.

Strong commercial and contractual awareness.

Ability to work effectively in a fast-paced project environment.

Commitment to maintaining the highest standards of safety, quality and performance

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