Fluid System Development Engineer

Posted 3 Days Ago
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Lexington, MA, USA
In-Office
77K-100K Annually
Entry level
Artificial Intelligence • Manufacturing
The Role
Design, develop, and test fluid systems for autonomous maritime vehicles, including fuel, cooling, hydraulics, pneumatics, lubrication, and seawater handling. Responsibilities include system architecture, component sizing, routing, prototyping, instrumentation, development testing, fault detection, documentation, supplier engagement, and producibility support. The role collaborates with mechanical, electrical, and software teams to improve reliability, maintainability, and performance through rapid design-test feedback cycles.
Summary Generated by Built In

We are an early-stage, maritime defense technology startup backed by top tier investors. Our team is designing and building autonomous and highly producible ships that can serve multiple missions on the open ocean.

Role Summary

We’re seeking a 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).


What You’ll Do

  • 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.


Who You Are

  • 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.

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).

 

What We Offer 

  • 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.

 

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.   

 

Blue Water Autonomy is an Equal Opportunity Employer. We comply with all applicable federal, state, and local laws governing nondiscrimination in employment. We do not discriminate on the basis of race, color, religion, sex (including pregnancy, sexual orientation, and gender identity), national origin, age, disability, genetic information, protected veteran status, or any other characteristic protected by law. All employment decisions—including recruitment, hiring, promotion, compensation, benefits, and termination—are made based on qualifications, merit, and business need.

Skills Required

  • Bachelor's degree in Mechanical Engineering, Aerospace Engineering, or a related engineering discipline
  • Comfort working hands-on with physical hardware, including fittings, tubing, seals, pumps, valves, and instrumentation
  • Strong fundamentals in fluid mechanics and thermodynamics
  • Engineering judgment balancing performance, safety, and maintainability
  • Clear, collaborative communication skills and ability to translate field observations into design improvements
  • Experience with P&IDs, pressure testing, hydraulic or pneumatic components, or thermal management systems
  • Familiarity with development programs emphasizing reliability, verification, and documentation discipline
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The Company
HQ: Boston, MA

What We Do

We’re building autonomous ships for the U.S. Navy and commercial customers. Our team has launched 100+ hardware products, built some of America’s most complex ships, and fielded millions of robots. Some of these are in use in your home, others on Ukraine’s battlefields. We don’t doubt that building ships with no human crew will be tough. We like tough.

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