Location
London

Hours
Full Time - Hours to be confirmed

Salary
Negotiable

About the Role
The role will work on the HS2 project, the UK’s new high speed rail network designed to drive economic growth by connecting 8 of the UK’s 10 biggest cities with fast, reliable, and frequent services. Costain+ is delivering the HS2 Rail Systems Tunnel and Lineside Mechanical and Electrical Systems works across the entire HS2 Route (HRS02). The scope includes design, supply, manufacture, installation, testing, commissioning, and maintenance (until handover) of tunnel and lineside M&E systems, including tunnel services within shafts, tunnels, and cross-passages, as well as low voltage electrical power distribution along the open route. Additionally, Costain+ will design, supply, install, test, and commission tunnel ventilation systems.

Key responsibilities include supporting the design, review, and implementation of Mechanical systems for HRS02 HS2 lineside works, interfacing and coordinating with other HS2 Rail Systems contractors (track, signalling, telecoms, OHLE, HV power), reviewing technical documentation, chairing discipline-specific meetings, undertaking material selection and preparing technical approval documentation, and ensuring compliance with UK rail industry standards and HS2 Works Information. The role also involves identifying and managing technical risks, producing quality documentation such as ITPs and installation verification check sheets, supporting assurance, quality, and safety processes, and providing engineering support during design, installation, testing, and commissioning activities.

The Mechanical Engineer will work closely with the Engineering team and Costain+ partners to coordinate requirements and programme delivery, liaise with procurement to specify and source appropriate Mechanical equipment, and maintain close coordination with Design, Safety, Commercial, and Planning teams. Promoting and supporting Costain values and behaviours across the project is also expected.

Experience
- Previous experience working on UK rail infrastructure projects
- Mechanical engineering experience within large-scale infrastructure or rail systems
- Strong understanding of Mechanical design principles and relevant UK rail industry standards (e.g. Network Rail standards, BS 9990)
- Good understanding of Tunnel Fire Main, Tunnel Ventilation, and Cross Passage Door design and installation in a rail environment
- Experience working within a main contractor or major project environment
- Sound knowledge of Mechanical installation practices and associated equipment

About you
- Ability to interface effectively with multiple stakeholders and coordinate across disciplines
- Strong problem-solving skills with the ability to identify and manage technical risks
- Excellent communication skills, both written and verbal
- Commitment to quality, safety, and assurance processes
- Proactive team player who promotes company values and behaviours

Qualifications
- HNC, HND, or Degree in Mechanical Engineering or related discipline
- CSCS Card
- High standard of written and spoken English
- Chartered or working towards professional accreditation (e.g. IEng/CEng) is desirable
- Knowledge and experience of Acoustics, Fire Stopping, M&E systems, or rail systems integration is desirable
- Familiarity with design and installation of metalwork structures is desirable