Mechanical Engineer, Fluid Systems

Who you are

Astro Mechanica is seeking a Mechanical Systems Engineer (Fluid Systems) to own the design, integration, and maturation of critical vehicle fluid systems. The ideal candidate is a hands-on engineer with a passion for owning complex systems from the ground up. You thrive in fast-paced development environments, are comfortable making informed tradeoffs, and take pride in building systems that are robust, maintainable, and performant across the full flight envelope.

Your work will directly enable propulsion, actuation, thermal management, and vehicle operability at extreme conditions. You will own one or more subsystems end-to-end, leading them from early concept through detailed design, qualification, and flight test.

What we’re looking for

• Bachelor’s degree in Mechanical Engineering, Aerospace Engineering, or a related field
• 2–5+ years of experience designing, integrating, or testing fluid or mechanical systems (internships and student projects count)
• Strong understanding of fluid mechanics, thermodynamics, and mechanical system fundamentals
• Experience with system-level thinking: requirements flow-down, interfaces, failure modes, and operational considerations
• Proficiency in 3D CAD tools (NX, CATIA V5, SolidWorks, or similar) for routing, packaging, and component design
• Hands-on experience with hardware—plumbing, assembly, instrumentation, or testing
• Clear communicator who works well across disciplines and can translate analysis into practical design decisions
• Comfortable operating in a fast-moving, evolving development environment
• Willingness to travel to test sites and support field operations as needed

• Comprehensive medical, dental, and vision insurance, including Flexible Spending Accounts (FSA)
• 401(k) program and transparent stock option plan
• Self-managed and flexible time-off policy, including PTO, paid holidays, and sick time

Additional information

At Astro Mechanica, we highly value in-office work to foster collaboration and strengthen our company culture. We consider working in the office five days a week an essential part of the employee's role.

About us

Astro Mechanica is a vertically integrated aerospace company developing a scalable technology platform to power critical infrastructure, mission operations, and the future of flight. We apply aerospace engineering and quality standards across our products, delivering high performance, reliability, and efficiency for the most demanding operating environments. Astro Mechanica is backed by leading venture and strategic investors, including Andreessen Horowitz (a16z), Giant Step Capital, United Airlines Ventures, and Voyager Ventures.

Who we are

We’re a team of passionate engineers dedicated to advancing aerospace. We’re generalists with specialist depth, united by a flat structure and a shared obsession with building things that work well. We move fast, stay pragmatic, and let engineering excellence speak louder than hierarchy.