Propulsion Senior Engineer – Pressure & Fluid Systems

Axiom Space; United States; On-site; USD 100,000 - 130,000; Full time

Job summary

Axiom Space is seeking a Propulsion Senior Engineer – Pressure & Fluid Systems to manage the technical execution of spacecraft fluid systems. The ideal candidate will take responsibility from requirements through design, build, and testing phases.

The position requires a Bachelor’s degree and 7+ years of experience in fluid systems. Strong expertise in fluid dynamics and vendor coordination is essential.

Qualifications

• 7+ years of relevant experience in pressure control and fluid systems design.
• Significant hands-on experience with propellant feed system design and integration.
• Experience coordinating with vendors on technical requirements.

Responsibilities

• Own end-to-end execution of spacecraft pressure control and fluid systems.
• Lead technical execution for critical milestones.
• Perform modeling and simulation of fluid systems.

Skills

Fluid dynamics

Thermodynamics

Pressure systems design

3D modeling

Communication

Leadership

Education

Bachelor’s degree in Aerospace, Mechanical or related Engineering

Tools

SolidWorks

GFSSP

ANSYS

Fluent

Job description

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 on aggressive cost and schedule targets while maintaining safety and configuration discipline.

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 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—to anchor analytical models and validate simulations against test data.
• Lead and participate in internal and external design and gate reviews, trade studies and sub‑assembly 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

• Education: Bachelor’s degree in Aerospace, Mechanical or related Engineering discipline (advanced degree preferred).
• Experience: 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 (COPVs, valves, regulators, filters, manifolds and instrumentation).
• Technical expertise: Expertise in fluid dynamics, thermodynamics and heat transfer applied to propulsion systems; experience with oxygen compatibility requirements and assessments.
• Vendor coordination: Experience coordinating with external vendors on technical requirements, design verification, cost and schedule performance.
• Software: 3D modeling (SolidWorks preferred); modeling and simulation tools such as GFSSP, ANSYS, Fluent.
• Traits: Grit, passion for space and the mission, entrepreneurial and growth mindset, perseverance, resourceful, adaptable.
• Skills: Executes priorities with precision and pace; high EQ and collaborative across teams; tech‑savvy; excellent written and verbal communication.
• Competencies: Leadership, innovation, teamwork, accountability, urgency, extreme ownership, efficiency and effectiveness.

Work Environment

Generally an office environment, but may involve inside or outside work depending on the task.

Physical Requirements

Work may involve sitting or standing for extended periods (90% of the time); may require lifting and carrying up to 25 lbs. (5% of the time).

Additional Requirements

Must be able to complete a U.S. government background investigation. Proof of U.S. citizenship or U.S. permanent residency is required for this position. Must be willing to work evenings and weekends as needed to meet critical project milestones.

Equal‑Employment‑Opportunity Statement

Axiom Space is proud to be an equal‑opportunity employer. Axiom Space does not discriminate on the basis of race, color, national origin, gender (including pregnancy, childbirth or related medical conditions), sexual orientation, gender identity, gender expression, age, status as a protected veteran, status as an individual with disability or other legally protected characteristics.