Mechanical Engineer

The role

You will design structural and mechanical systems for composite aircraft. You will work across CAD design, mechanism development, and finite element analysis to create structures for flight and marine environments.

What you will do

• Design and develop aircraft structures, mechanisms, and tooling using CAD software
• Perform FEA to validate strength, stiffness, and load paths in composite and metallic components
• Create detailed part/assembly drawings and documentation for manufacturing and inspection
• Design linkages, control surface mechanisms, and mounting systems for aircraft subsystems
• Collaborate with manufacturing engineers to ensure designs are practical, cost-effective, and easy to assemble
• Support testing and validation of structural and mechanical systems, including fixture and rig design
• Maintain CAD libraries, revision control, and configuration management for aircraft assemblies
• Provide design feedback to improve manufacturability, maintainability, and structural efficiency

Required qualifications

• Degree in Mechanical Engineering, Aerospace Engineering, or a related field
• Proficiency with CAD software such as Fusion, SolidWorks, CATIA, or NX
• Strong understanding of structural design, stress analysis, and mechanical systems
• Experience with FEA tools such as ANSYS, Fusion Simulation, Nastran, or similar
• Ability to apply GD&T and mechanical tolerancing to production drawings
• Familiarity with composite and metallic fabrication methods
• Understanding of fundamentals of flight mechanics and aircraft dynamics
• Comfortable working hands-on with prototypes, test articles, and shop tools
• Capable of managing projects independently in a fast-paced, startup environment

Nice to have

• Experience with bonded composite structures or hybrid assemblies
• Background in actuation systems, linkages, or motion mechanisms
• Knowledge of vibration, fatigue, or modal analysis
• Hands-on experience with machining, additive manufacturing, or assembly tooling
• Familiarity with design for manufacturing (DFM) and design for assembly (DFA)
• Proficiency in MATLAB or Python for analysis and process automation
• Exposure to aerospace certification or flight test environments

Benefits

• Competitive salary
• Meaningful early-stage equity
• Relocation support if applicable
• Employee Health Benefit Plans
• 6% Retirement matching
• Flexible PTO
• Free lunches, snacks, and a stocked fridge at our offices
• AI tools and subscriptions

About the company

Poseidon Aerospace builds and operates full-size autonomous cargo aircraft. The company is headquartered in the San Francisco Bay Area with locations in Washington DC, Oregon, and Maine.