Fluid System Development Engineer (entry-level)

Blue Water Autonomy • Lexington, MA

2d • $77,000 - $100,000

About The Position

We’re seeking an Entry-Level / Early Career Fluid System Development Engineer to support the design, development, and test of fluid systems that enable vehicle operation and reliability (fuel, cooling, hydraulics/pneumatics, lubrication, seawater handling, and related controls—depending on platform needs). You’ll help take systems from concept through requirements, layout, prototyping, and qualification—aligned with how space and aerospace teams develop flight-critical fluid systems (pumps, valves, actuators, controls).

Requirements

• BS in Mechanical, Aerospace, or related engineering discipline.
• Comfortable working with physical hardware and learning hands-on (fittings, tubing, seals, pumps/valves, instrumentation).
• Strong fundamentals in fluids/thermo and an engineering mindset that balances performance, safety, and maintainability.
• Clear, collaborative communicator who can translate field observations into actionable design improvements.
• Must be a U.S. Person due to required access to U.S. export controlled information or facilities. By applying, you confirm that you are a U.S. Person and can provide acceptable documentation verifying your status if selected.

Nice To Haves

• Experience with P&IDs, pressure testing, hydraulic/pneumatic components, or thermal management systems.
• Familiarity with development programs that emphasize reliability, verification, and documentation discipline (common in aerospace/space).

Responsibilities

• Support architecture and detailed design of fluid systems: schematics (P&IDs), component selection, routing/layout, mounting, and serviceability.
• Size components and lines using first principles and simple models (pressure drop, flow rates, heat transfer) and validate assumptions with test.
• Partner with mechanical/electrical/software teams on sensors, controls, and fault detection for fluid subsystems.
• Create and execute development tests: leak checks, performance characterization, endurance screening, and instrumentation plans.
• Own tight feedback loops: capture issues, propose design changes, and re-test quickly with strong documentation.
• Support producibility: BOM rationalization, supplier engagement, assembly procedures, and verification checklists.

Benefits

• Incredibly high-caliber teammates. You’ll work directly with our co-founders Rylan, Scott, and Austin.
• A fast-paced, creative working environment that offers a lot of room for ownership and growth.
• Opportunity to join a meaningful mission that protects American and our Democracy.
• Salary Range: $77,000 - $100,000 annual base salary (final compensation will depend on experience and skill level.
• Startup equity options.
• Generous PTO, medical, dental, and free vision coverage.

What This Job Offers

• Job Type: Full-time
• Career Level: Entry Level