Poseidon Aerospace is reimagining how the world moves goods. We build and operate full-size autonomous cargo aircraft - capable of carrying two tons of payload over a thousand nautical miles. From remote communities to contested logistics operations, our platforms unlock a new cost curve for air freight, making it faster, cheaper, and accessible anywhere it's needed. Headquartered in the San Francisco Bay Area with locations in Washington DC, Oregon, and Maine; we're building something consequential.
As an Aerospace Engineer at Poseidon Aerospace, you will shape the aerodynamic and performance characteristics of our next-generation composite aircraft. Your work will include CFD modeling, aerodynamic optimization, performance analysis, and test correlation. You will help translate flight objectives such as speed, range, and efficiency into manufacturable aircraft. The role combines analytical work with hands-on testing and collaboration across design and manufacturing teams.
Responsibilities:
Design and validate aerodynamic surfaces, configurations, and control geometries using CFD analysis and historical data
Support flight dynamics modeling and simulation for stability, control, and performance assessment
Provide input on propulsion integration, cooling airflow, and control surface sizing
Work with mechanical and manufacturing engineers to ensure aerodynamic designs are practical and efficient to produce
Conduct aerodynamic load analyses to ensure the airframe is supported
Create and maintain aerodynamic databases, performance models, and engineering documentation
Correlate CFD and analytical predictions with flight test data
Participate in flight testing and data review to compare measured results with predicted performance
Aid in the development of flight simulation models
Ideal Qualifications:
Proficiency with CFD tools such as ANSYS Fluent, Star-CCM+, XFLR5
Experience using CAD software such as Fusion 360, SolidWorks, CATIA, or NX for geometry creation and surface preparation
Strong understanding of aerodynamics, stability and control, and aircraft performance
Familiarity with mesh design and refinement including fluent meshing
Working knowledge of structural analysis and load validation
Ability to interpret flight test data and create analytical performance models
Understanding of composite design and manufacturing methods for aerodynamic surfaces
Independent, practical engineer comfortable in a hands-on development environment
Nice to Have:
Experience with flight testing, data acquisition, or post-flight data analysis
Experience with X-Plane aircraft design
Background in seaplane design
Experience with wind tunnel or scaled model testing
Programming skills in Python or MATLAB for CFD and performance automation
Basic experience with FEA for assessing load paths or aerodynamic-induced stresses
Competitive salary and 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