Mechanical Engineer Senior - Marine Fluid System Design

Blue Origin Operations includes Integrated Supply Chain, Test Operations, Safety, Quality, and Mission Assurance, providing Manufacturing and Supply Chain support across all Blue Origin facilities.

As part of a hardworking team of specialists, technicians, and engineers, you will be part of a Blue Origin team responsible for constructing a new class of marine vessel purpose-built for the at‑sea recovery and return of orbital‑class rocket boosters. Recovering an orbital‑class first stage at sea demands more than a conventional ship – it requires purpose‑designed fluid systems capable of generating, storing, and delivering gaseous nitrogen (GN2) for booster safing and inerting operations in a dynamic offshore environment.

The cryogenic and pneumatic systems aboard this vessel will be unlike anything that has gone to sea before, and we need a senior fluids engineer to own them.

• Own the design, analysis, and engineering of cryogenic, pneumatic, and fluid systems for new vessel construction and fleet sustainment, including nitrogen generation and GN2 distribution systems
• Develop and maintain piping and instrumentation diagrams (P&IDs), process flow diagrams (PFDs), and system schematics for marine fluid systems
• Perform fluid system analyses including pipe sizing, pressure drop calculations, thermal analysis, flow modeling, and system transient simulations using relevant engineering tools
• Define system architecture and develop technical specifications for cryogenic storage, vaporization, and distribution equipment suited for marine environments
• Develop and validate models of fluid systems using relevant software tools (e.g., AFT Fathom/Arrow, Sinda Fluint, Simulink, MATLAB, or equivalent)
• Design and specify marine piping systems in accordance with ASME B31.1, ASME B31.3, ABS Rules, USCG CFRs, and other applicable marine standards
• Specify fluid system components including valves, regulators, pumps, heat exchangers, pressure vessels, cryogenic storage dewars, vaporizers, and nitrogen generators for marine service
• Develop fabrication and installation drawings, assembly details, and bill of materials for piping and fluid system installations
• Oversee shipyard fabrication and installation of piping and fluid systems, conducting in‑process inspections and redline reviews for as‑built documentation
• Lead hydrostatic testing, pneumatic testing, leak testing, and system commissioning for marine fluid systems
• Coordinate with the Senior Marine Electrical Engineer on electrical power requirements and motor control interfaces for fluid system equipment (pumps, compressors, vaporizers, etc.)
• Coordinate with the Marine I&C Engineer on instrumentation requirements, control logic, and automation interfaces for cryogenic and pneumatic systems
• Coordinate with the Technical Lead (Analyst / Naval Architect) on fluid system classification compliance, weight and stability impacts, and vessel arrangement considerations
• Coordinate with the Recovery Offshore Operations Engineer on recovery‑specific fluid system interfaces and operational requirements for booster safing and inerting
• Support the Project Construction Managers with technical guidance on piping installation sequences, fluid system fit‑checks, and quality verification at the shipyard
• Provide technical mentorship and direction to the Marine Fluids Engineer
• Develop preventive maintenance plans and procedures for cryogenic and fluid systems
• Create process hazard analyses, job hazard analyses, and formal risk evaluations for fluid system operations
• Ensure designs comply with safety standards, regulatory requirements, and classification society rules
• Participate in design reviews and provide technical input for continuous improvement
• Prepare technical documentation and present findings to stakeholders and senior management
• Maintain configuration control of fluid system engineering documentation

• Minimum of a B.S. degree in Mechanical Engineering, Aerospace Engineering, Chemical Engineering, Marine Engineering, or equivalent
• 10+ years of experience in fluids system design, analysis, and engineering with direct experience in cryogenic systems or…