Senior Mechanical Stress Engineer - Part 21J, Aircraft Modifications£60,000 - £80,000 base + benefitsDublin OR Frimley (Farnborough Area) - HybridAbout the OpportunityWe are hiring for a Senior Mechanical Stress Engineer to lead the structural substantiation and certification of large commercial aircraft modifications within an EASA Part 21J Design Organisation environment.This is a senior-level technical role offering the opportunity to act as a stress and certification focal point, lead complex engineering activities, and mentor other engineers across multiple high-profile modification programmes.Key Responsibilities- Lead structural analysis and certification activities for commercial aircraft modification programmes- Act as the technical authority and focal point for stress and structures-related queries- Perform and review hand calculations, classic stress analysis and FEA- Prepare and approve structural substantiation reports and certification documentation- Ensure compliance with EASA/FAA airworthiness regulations and DOA processes- Support design reviews, risk assessments and technical decision-making- Mentor and coach junior and mid-level engineers- Represent engineering at customer and programme milestone meetings (PDR, CDR, FAI, etc.)- Collaborate with global, cross-functional engineering teams across multiple time zonesTypical Project ScopeYou may support certification and integration of:- Seating installations- Galleys, lavatories, monuments and VVIP interiors- ..... full job details .....