Senior Mechanical Engineer – Major UK Nuclear Project

Company: PAE Government Services Inc.
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Job Description:

Amentum is seeking a Senior Mechanical Engineer to join the Lightly Shielded Store Project (LSS1) at Sellafield. The role focuses on delivering a 7200m2 new build with a 100-year design life, coordinating design activities and engineering solutions across multidisciplinary teams.

Strong experience in regulated environments is preferred, with knowledge of UKCA/CE marking and related safety standards. The role is based on-site at Birchwood and offers a path to technical leadership within a major

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Posted: October 10th, 2026