Principal Mechanical Design Engineer.

Babcock International Group • Warrington, England • Posted June 11, 2026

About the Role

Job Title: Principal Mechanical Design Engineer

Location: Warrington, Cheshire or Preston, Lancashire + Hybrid Working Arrangements


Compensation: Competitive Salary + Benefits


Role Type: Full time / Permanent


Role ID: SF

Lead the engineering solutions shaping the future of nuclear projects

At Cavendish Nuclear, we’re working to create a safe and secure world, together. If you join us, you can play your part as a Principal Mechanical Design Engineer within our Business Winning team, based at either Warrington or Preston, with flexible hybrid working.

This is a pivotal role where you’ll lead the development of innovative mechanical engineering solutions during the bid phase – and then see those solutions brought to life as projects transition into delivery. It’s a rare opportunity to influence outcomes from concept to execution in one of the UK’s most critical sectors.

The role...