Principal Mechanical Engineer

Rullion Engineering Cumbria
📍 Warrington, Cheshire, United Kingdom 💼 Full-time 🕒 Posted July 08, 2026

Job Description

Position: Principal Mechanical Engineer
Location: Warrington or Abingdon (flexible with location)
Start Date: ASAP
Hours: 37 hours per week, Monday - Friday

Hybrid: 2 days in the office and 3 days home working

Nuclear Projects
The Principal Mechanical Engineer will work within multi-disciplinary engineering teams delivering projects across different lifecycle stages, from FEED through to detailed design, commissioning, and operational support within regulated nuclear environments.
You will be involved in mechanical design and technical studies, supporting a range of systems including handling equipment, mechanical transfer systems, and process equipment used in high-active or controlled environments. Work will also include design development, technical documentation, and support across construction, commissioning, operations, and decommissioning phases.

Key Responsibilities
Deliver and manage mechanical engineering studies and design work
Pro...

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Job Details

  • Location Warrington, Cheshire
  • Job Type Full-time
  • Category architecture-and-engineering
  • Posted Date July 08, 2026
  • Application Deadline August 17, 2026