Director, Fluid Systems Analysis

At Vast, our mission is to contribute to a future where billions of people are living and thriving in space. Vast is developing next-generation space stations to ensure a continuous human presence in space for America and its allies, enabling advanced microgravity research and manufacturing, and unlocking a new space economy for government, corporate, and private customers. Using an incremental, hardware-rich and low-cost approach, Vast is rapidly developing its multi-module Haven Station. Haven Demo’s 2025 success made Vast the only operational commercial space station company to fly and operate its own spacecraft. Next, Haven-1 is expected to become the world’s first commercial space station when it launches, followed by additional Haven modules to enable permanent human presence by 2030. Our team is all-in, committed to executing our mission safely and on time. If you want to work with the most talented people on Earth furthering space exploration for humanity, come join us.

Vast is looking for a Director, Fluid System Analysis , reporting to the Vice President of Fluid Systems,  to support the development of the systems that will be required for the design and build of artificial-gravity human-rated space stations.

This will be a full-time, exempt position located in our  Long Beach location.

Key Responsibilities

• Manage and lead a team of Propulsion and Thermal analysts, including hiring, mentoring, and technical development

• Set standards for analysis methods, documentation, and best practices in a fast-paced, evolving environment

• Expand company capabilities in analysis by validating and establishing methods and practices across structural, fluid, and thermal domains

• Create and maintain FEA models of propulsion components to support design and certification

• Define and review critical loads and load cases in collaboration with GNC, fluids analysis, dynamics/loads engineers and design teams

• Mentor design and analysis engineers in analysis methods and validation via testing to review/approve component drawings with feedback

• Partner with test engineering to plan and execute structural and dynamic tests, and perform associated analyses

• Oversee multiphase propellant feed system and microgravity fluid behavior modeling, including vaporization, condensation, propellant acquisition and slosh dynamics

• Guide high-pressure gas system analysis, transient flow behavior (e.g., water hammer, adiabatic compression), and thruster plume impingement studies

• Support development and validation of propulsion fluid systems using best practices

• Integrate simulation results with ground and flight test data to validate models and refine designs

• Partner closely with design, manufacturing, propulsion, thermal, and GN&C teams to ensure analysis informs critical decisions

• Present technical findings at design reviews and contribute to NASA certification processes

• Lead root cause investigations and corrective actions when issues arise

Minimum Qualifications

• B.S. degree in Mechanical, Aerospace, or related Engineering field

• 8+ years of relevant aerospace design and analysis experience

• 2+ years of experience overseeing / managing a technical engineering or analysis team

• Strong expertise in structural analysis, including FEA modeling, stress analysis, and load case development

• Experience with thermo fluid analysis tools (CFD, 1-D system modeling, etc.)

• Knowledge of mechanical design, manufacturing processes, and design-for-manufacturability principles

Preferred Qualifications

• M.S. or higher in Aerospace, Mechanical, or related engineering

• Experience in human spaceflight hardware design and analysis

• Expertise in multiphase fluid dynamics, propellant management, and slosh modeling under low-gravity conditions

• Experience with thermo-mechanical fatigue, fracture analysis, and spectrum loading fatigue analysis

• Hands-on experience with high-pressure gas systems, transient fluid dynamics and heat exchangers

• 5+ years of experience with liquid or gas  rocket engine combustion devices, including RCS design

• Track record of leading multidisciplinary teams linking analysis predictions with test and qualification data to accelerate hardware development and certification

Pay Range: California
$203,360 — $232,800 USD

COMPENSATION AND BENEFITS

Base salary will vary depending on job-related knowledge, education, skills, experience, business needs, and market demand. Salary is just one component of our comprehensive compensation package. Full-time employees also receive company equity, as well as access to a full suite of compelling benefits and perks, including: medical, dental, and vision coverage for employees and dependents, generous paid time off; up to 20+ days of vacation for exempt staff and up to 10+ days of vacation for non-exempt staff with the ability to cash-out unused vacation annually, paid parental leave, short and long-term disability insurance, life insurance, access to a 401(k) retirement plan, ClassPass credits, personalized mental healthcare through Spring Health, and other discounts and perks. We also take pride in offering exceptional food perks, with snacks, drip coffee & onsite barista, cold drinks, and dinner meals remaining free of charge, and lunch subsidized as part of Vast’s ongoing commitment to providing high-quality meals for employees.

U.S. EXPORT CONTROL COMPLIANCE STATUS

The person hired will have access to information and items subject to U.S. export controls, and therefore, must either be a “U.S. person” as defined by  22 C.F.R. § 120.62 or otherwise eligible for deemed export licensing. This status includes U.S. citizens, U.S. nationals, lawful permanent residents (green card holders), and asylees and refugees with such status granted, not pending.

EQUAL OPPORTUNITY

Vast is an Equal Opportunity Employer; employment with Vast is governed on the basis of merit, competence and qualifications and will not be influenced in any manner by race, color, religion, gender, national origin/ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability or any other legally protected status.