Project Overview We are supporting the delivery of HS2 in the Aylesbury area and are seeking an experienced Multidisciplinary Sub Agent to work on a permanent basis. The role sits within a major civils package and involves coordination and delivery across multiple disciplines in a highly regulated, safety‑critical environment. Role Purpose The Sub Agent will be responsible for managing defined sections of works, ensuring safe, programmed, and quality‑driven delivery across a range of civil engineering activities. The role requires strong coordination between construction, commercial, design, and temporary works teams, as well as effective interface management with HS2 Ltd and stakeholders. Key Responsibilities Delivery & Construction Management Manage day‑to‑day delivery of multidisciplinary civils works including: Earthworks Drainage (surface and foul) Heavy structures / concrete works Utilities and services diversions Ensure works are delivered in line with programme, budget, and HS2 standards Coordinate subcontractors and direct delivery teams on site Plan and sequence works in collaboration with the Project Manager and Section Engineers Safety, Quality & Compliance Promote and maintain a strong, proactive health & safety culture Ensure compliance with HS2 Assurance, quality plans, ITPs, and project procedures Review and implement RAMS, permits, and safe systems of work Support audits, inspections, and HS2 technical assurance processes Commercial & Programme Control Assist with short‑term and look‑ahead planning Contribute to cost control, change management, and subcontractor performance Support valuation, compensation events, and early warning processes Identify and manage risks and opportunities within the section Design & Temporary Works Interface Work closely with design teams to resolve constructability issues Coordinate and manage temporary works in line with temporary works procedures Ensure timely approvals and implementation of permanent and temporary designs Stakeholder & Client Interface Act as a key site‑based point of contact with HS2, the client, and supply chain partners Support stakeholder coordination where construction interfaces with third‑party assets Skills & Experience Required Essential Proven experience as a Sub Agent or Senior Section Engineer on major UK infrastructure projects Strong multidisciplinary civils background (earthworks, drainage, structures, utilities) Experience working within regulated environments such as HS2, highways, rail, or major frameworks Good understanding of NEC forms of contract Ability to manage multiple work fronts and interfaces simultaneously Strong leadership, communication, and organisational skills Desirable Previous HS2 project experience Experience working in assurance‑led or client‑heavy environments HNC / Degree in Civil Engineering or equivalent SMSTS, CSCS (Black or Gold), Temporary Works Supervisor/Coordinator