Liaison Stress Engineer - (Fatigue & Damage Tolerance)

Mammoth Freighters offers a role with direct impact on high-profile aircraft certification work in a fast-paced production environment. This onsite position in Fort Worth, TX supports the 777-200LR/-300ER freighter conversion program by bridging manufacturing needs and structural design authority, helping ensure repairs and deviations meet FAA and internal airworthiness requirements.

Responsibilities

• Perform stress analysis and develop structural dispositions for nonconformances (NCRs), engineering deviations, and supplier discrepancies across 777 metallic and composite structures.
• Author and approve Engineering Orders (EOs), Deviation Requests (DRs), and Engineering Service Requests (ESRs) within delegated authority limits.
• Interface with DER/DAR representatives, FAA designees, and the Designated Engineering Representative network to obtain regulatory approval for major repairs and alterations.
• Execute hand calculations and FEA correlation to substantiate structural adequacy of repaired or deviated structures against limit and ultimate load requirements.
• Collaborate with manufacturing, quality assurance, and tooling teams to develop practical repair schemes that preserve fatigue life and meet damage tolerance needs per FAR Part 25.
• Provide on-call floor support during production build phases and aircraft delivery.
• Mentor junior stress engineers and review analyses to strengthen technical judgment and engineering rigor.
• Maintain and contribute to the stress report, repair manuals (SRM), and structural substantiation documentation.
• Support fatigue and damage tolerance substantiation, including supplemental inspection development per FAR Part 25.571 (experience is a plus).

Requirements

• B.S. in Aerospace, Mechanical, or Civil Engineering (M.S. preferred).
• 8+ years of structural stress analysis experience in commercial or military aviation.
• Demonstrated 777 or equivalent widebody program experience.
• Proficiency in classical stress methods: beam theory, thin-walled sections, bolted/riveted joint analysis, and composite laminate theory.
• Hands-on experience with FEA tools such as FEMAP and NASTRAN (or equivalent).
• Familiarity with FAR Part 25 certification basis and AC 25.571 damage tolerance requirements.
• Experience authoring and approving dispositions.
• Strong written and verbal technical communication skills.

Preferred Qualifications

• Experience with widebody aircraft programs (Boeing 767, 777, 747; Airbus A330, A340, A350).
• Familiarity with FAA certification coordination.
• Experience with P2F (passenger-to-freighter) conversion programs.
• Experience managing engineering teams in an AS9100/ISO 9001 quality environment.
• Knowledge of 7000- and 2000-series aluminum alloys, titanium, and CFRP repair practices.
• Prior liaison engineering role on a high-rate production program.
• Experience with fatigue and fracture mechanics substantiation.
• History of collaboration with airline customers on in-service structural issues.

Benefits

• Competitive Salary
• 401k match of up to 3%, 100% vested from day one
• Comprehensive Benefits: 100% coverage of employee-only medical, dental, and vision premiums; life insurance and disability coverage offered
• PTO & work-life balance: generous paid time off, flexible scheduling, and hybrid work options where applicable
• Impactful projects: lead FAA certification programs with global airline and cargo customers
• Employee assistance program
• Flexible spending account
• Health savings account
• Professional development assistance
• Retirement plan
• Paid time off

Work Location

In person in Fort Worth, TX 76177 (required).