Senior Mechanical Stress Engineer

Senior Mechanical Stress Engineer - Part 21J, Aircraft Modifications
60,000 - 80,000 base + benefits

Dublin OR Frimley (Farnborough Area) - Hybrid

About the Opportunity

We 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 zones

Typical Project Scope
You may support certification and integration of:
- Seating installations
- Galleys, lavatories, monuments and VVIP interiors
- Cabin layout and LOPA changes
- LRU installations and PSU reconfigurations
- Antenna and equipment installations
- Fuselage and primary structure modifications

Skills & Experience Required
- Degree in Aerospace, Aeronautical or Mechanical Engineering
- Current or recent experience within an EASA Part 21J Design Organisation (or equivalent)
- Strong background in aircraft stress analysis and structural substantiation
- Proficient with hand calculations, classical methods and FEA tools
- Experience compiling technical reports and certification artefacts
- Working knowledge of EASA airworthiness regulations (CS-25 / FAR 25 / ETSO)
- Experience supporting certification of aircraft interior and/or primary structure modifications
- Ability to manage multiple projects and prioritise effectively
- Excellent communication and stakeholder engagement skills

Highly desirable:
- Previous experience acting as a Compliance Verification Engineer (CVE)
- Experience leading technical reviews or acting as a subject matter expert
- Mentoring or team leadership experience

About You
- A confident technical specialist and problem solver
- Comfortable leading complex engineering decisions
- Detail-oriented with strong professional integrity
- Able to influence stakeholders and customers
- Passionate about mentoring and raising engineering standards

What's on Offer
- Work on large-scale, real-world commercial aircraft modifications
- Senior technical ownership and influence
- Exposure to global airline customers
- Structured career progression within a Part 21 environment
- Collaborative engineering culture
- Competitive salary and benefits