Propulsion Senior Engineer - Pressure & Fluid Systems

Axiom Space; Texas; On-site; USD 140,000 - 210,000; Full time

Job summary

Axiom Space seeks a Propulsion Senior Engineer - Pressure & Fluid Systems to own the end-to-end execution of bipropellant feed systems, from requirements definition to flight readiness. You will lead cross-functional teams and manage suppliers to meet safety, cost, and schedule targets.

The ideal candidate brings hands-on propulsion hardware experience, deep knowledge of fluid dynamics and thermodynamics, and strong technical leadership.

Qualifications

• Bachelor's degree in Aerospace, Mechanical or related Engineering; advanced degree preferred.
• 7+ years of experience with depth in pressure control and fluid systems design.
• Hands-on experience with propellant feed system design, development, qualification and integration, including COPVS, valves, regulators, filters, manifolds and instrumentation.
• Expertise in fluid dynamics, thermodynamics and heat transfer with propulsion applications.
• Experience with oxygen compatibility requirements and assessments.
• Experience coordinating with external vendors on technical requirements, design verification, cost and schedule performance.
• 3D modeling software experience: SolidWorks preferred.

Responsibilities

• Owns end-to-end technical execution of spacecraft pressure control and fluid systems, from requirements through design, build, integration, test and flight readiness.
• Serve as SME in propellant feed and pressurization system design; provide technical authority on architecture and interfaces.
• Perform detailed modeling, analysis and simulation of fluid systems using GFSSP, ANSYS/Fluent to evaluate performance and transient behavior.
• Size and select fluid system components to meet performance, environmental and material requirements.
• Define and execute system and component level tests, anchor analytical models and validate with test data.
• Lead reviews, trade studies, and subassembly integration; ensure compliance with requirements and milestones.
• Coordinate with vendors on technical requirements, design verification, cost, and schedule.
• Define and control interfaces between fluid/pressure systems and vehicle level systems with other teams.
• Provide technical mentorship to less experienced engineers.
• Deliver against safety, cost, and schedule targets.

Skills

Propulsion systems

Fluid dynamics

System-level design

3D CAD (SolidWorks)

Mathematical modeling

Technical leadership

Vendor coordination

Education

Bachelor's degree in Aerospace/Mechanical Engineering

Advanced degree preferred

Tools

GFSSP

ANSYS/ Fluent

SolidWorks

Job description

Axiom Space is building the world's first commercial space station - Axiom Station. Serving as a cornerstone for sustained human presence in space, this next-generation orbital platform fosters groundbreaking innovation and research in microgravity, and cultivates the vibrant, global space economy of tomorrow. Today, driven by the vision of leading humanity's journey off planet, Axiom Space is the principal provider of commercial human spaceflight services to the International Space Station and developer of advanced spacesuits for the Moon and low-Earth orbit. Axiom Space is building era-defining space infrastructure that drives exploration and fuels a vibrant space economy that will empower our civilization to transcend Earth for the benefit of every human, everywhere.

Axiom Space fosters a work environment inclusive of all perspectives. We are the pioneers of commercial space, leading the transformation of low-Earth orbit into a global space marketplace.

Our mission-driven team is seeking a bold and dynamic Propulsion Senior Engineer - Pressure & Fluid Systems who is fueled by high ownership, execution horsepower, growth mindset, and driven to understand our world, science/technology, and life itself, for the benefit of all on Earth and beyond.

POSITION SUMMARY

We are looking for a resilient, high-energy, experienced Propulsion Senior Engineer - Pressure & Fluid Systems to own the end-to-end technical execution of a bipropellant feed system from requirements definition through design, build, integration, test, and flight readiness. You will lead cross-functional teams and suppliers to deliver to aggressive cost and schedule targets while maintaining safety and configuration discipline. The ideal candidate combines deep hands-on propulsion hardware experience with strong technical leadership, clear communication, and a bias for execution.

KEY DUTIES & RESPONSIBILITIES

• Owns the end-to-end technical execution of spacecraft pressure control and fluid systems - including COPVs, flow control devices (valves, regulators, manifolds, filters) from requirements through design, build, integration, test and flight readiness.
• Serve as a subject matter expert in propellant feed system and pressurization system design, providing technical authority on system architecture, component selection, and interface definition across the development lifecycle.
• Perform detailed modeling, analysis and simulation of fluid systems using tools such as GFSSP, ANSYS, Fluent to evaluate system performance, fluid dynamics, thermal effects and transient behaviors.
• Perform detailed sizing and selection of fluid system components, ensuring compatibility with performance, environmental, material and other requirements.
• Define, plan, and execute system and component level tests including development, qualification and acceptance testing anchor analytical models and validate simulations against test data.
• Lead and participate in internal and external design and gate reviews, trade studies and subassembly integration activities; ensure compliance with system requirements and program milestones.
• Coordinate and manage technical requirements and design certification activities with external vendors and suppliers, interface on cost, schedule, design, manufacturing and acceptance.
• Define and control functional and physical interfaces between the fluid/pressure systems and vehicle level systems, collaborating with structures, thermal, avionics, and software teams.
• Provide technical mentorship and guidance to less experienced engineers.
• Responsible for delivering against safety, cost, and schedule targets.

QUALIFICATIONS:

To perform this job successfully, an individual must be able to perform each essential duty satisfactorily. The requirements listed below are representative of the knowledge, skill, and/or ability required. Reasonable accommodation may be made to enable individuals with disabilities to perform the essential functions.

Education & Experience

• Bachelor's degree from an accredited college or university in Aerospace, Mechanical or related Engineering discipline required; advanced degree preferred
• 7+ years of relevant experience with demonstrated depth in pressure control and fluid systems design
• Significant hands-on experience with propellant feed system design, development, qualification and integration, including COPVS, valves, regulators, filters, manifolds and instrumentation
• Expertise in fluid dynamics, thermodynamics and heat transfer with demonstrated application to propulsion systems
• Experience with oxygen compatibility requirements and assessments
• Experience coordinating with external vendors on technical requirements, design verification, cost and schedule performance
• 3D modeling software experience: SolidWorks preferred

Grit

• Passion for space and the mission
• Entrepreneurial, growth mindset
• Perseverance
• Resourceful, adaptable