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Principal Mechanical Engineer, Water Sector

Cardiff, gb💼 Full-time🗓 2026-06-08 → 2026-09-30

Core

Lead mechanical engineering design for water and wastewater infrastructure projects, from feasibility to detailed design and construction support.

Role type

Principal Mechanical Engineer (Water Sector)

Builds

Multi-discipline engineering designs for water and wastewater infrastructure schemes.

Domain

Water and wastewater infrastructure

Required skills

pump station design, piping design, valve selection, hydraulics, engineering report review, design drawing production, technical specification creation, site surveying, P&ID production, project budget and schedule management

Preferred skills

Chartered Engineer status (IMechE), experience with multi-billion pound capital programmes, collaboration with Tier 1 contractors

Technologies

MEICA solutions, P&ID tools, hydraulic modeling software

Responsibilities

Develop feasibility studies, outline and detailed designs; Create design drawings and prepare technical specifications; Collaborate with multidisciplinary teams; Ensure high technical quality and contribute to bids; Manage project budgets and schedules; Design mechanical installations for pumps, screens, valves, and odour control; Conduct site surveys and liaise with clients and contractors.

Seniority

Principal, hands-on IC with strategic delivery responsibility

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