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Assistant Rocket Propulsion Jobs (NOW HIRING)

L3HHCM20

$92K - $171K/yr

The Project and Component Engineer will assist in executing multiple phases of Pressurant and ... rocket propulsion components is highly desired. In compliance with pay transparency requirements ...

Xbow

Process Quality Engineer

Luling, TX · On-site

This position will assist in developing, defining, and implementing quality work instructions ... S. defense technology and rocket propulsion company that has developed an innovative, low-cost ...

X-Bow Systems

Process Quality Engineer

Luling, TX · On-site

This position will assist in developing, defining, and implementing quality work instructions ... S. defense technology and rocket propulsion company that has developed an innovative, low-cost ...

X-Bow Systems

Process Quality Engineer

Luling, TX · On-site

This position will assist in developing, defining, and implementing quality work instructions ... S. defense technology and rocket propulsion company that has developed an innovative, low-cost ...

Firefly Aerospace

Aerospace Welder III

Cedar Park, TX · On-site

$19.25 - $25/hr

... * Assist in root cause investigations and corrective actions related to weld quality or ... Experience supporting spacecraft, launch vehicle, satellite, or rocket propulsion programs.

CesiumAstro

Senior Propulsion Engineer I

El Segundo, CA

$140K - $168K/yr

Design and develop a variety of liquid rocket engine parts, including loading frames, gimbals ... These tools assist our recruitment team but do not replace human judgment. Final hiring decisions ...

CesiumAstro

Senior Propulsion Engineer I

El Segundo, CA · On-site

$140K - $168K/yr

Design and develop a variety of liquid rocket engine parts, including loading frames, gimbals ... These tools assist our recruitment team but do not replace human judgment. Final hiring decisions ...

Firefly Aerospace

Aerospace Welder III

Cedar Park, TX

$19.25 - $25/hr

... * Assist in root cause investigations and corrective actions related to weld quality or ... Experience supporting spacecraft, launch vehicle, satellite, or rocket propulsion programs.

CesiumAstro

Senior Propulsion Engineer I

El Segundo, CA · On-site

$140K - $168K/yr

Design and develop a variety of liquid rocket engine parts, including loading frames, gimbals ... These tools assist our recruitment team but do not replace human judgment. Final hiring decisions ...

Firefly Aerospace

Aerospace Welder III

Cedar Park, TX · On-site

$19.25 - $25/hr

... * Assist in root cause investigations and corrective actions related to weld quality or ... Experience supporting spacecraft, launch vehicle, satellite, or rocket propulsion programs.

Hermeus

F100 MRO

Atlanta, GA

$91K - $187K/yr

... rocket propulsion hardware with CAD +GD&T * Proven responsibility for flight-proven hardware ... These tools assist our recruitment team but do not replace human judgment. Final hiring decisions ...

Hermeus

F100 MRO

Los Angeles, CA

$91K - $187K/yr

... rocket propulsion hardware with CAD +GD&T * Proven responsibility for flight-proven hardware ... These tools assist our recruitment team but do not replace human judgment. Final hiring decisions ...

Hermeus

F100 MRO

Jacksonville, FL

$91K - $187K/yr

... rocket propulsion hardware with CAD +GD&T * Proven responsibility for flight-proven hardware ... These tools assist our recruitment team but do not replace human judgment. Final hiring decisions ...

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Infographic showing various Assistant Rocket Propulsion job openings in the United States as of August 2026, with employment types broken down into 1% As Needed, 75% Full Time, 21% Part Time, 1% Temporary, and 2% Contract. Highlights an 98% Physical, 1% Hybrid, and 1% Remote job distribution.

Senior Propulsion Analyst (Fluids)

Impulse Space

Redondo Beach, CA • On-site

$135K - $185K/yr

Full-time

Medical, Dental, Vision, Retirement

Re-posted 13 days ago

Job description

Description
As a Senior Propulsion Analyst (Fluids) at Impulse, your core responsibility will be to analyze and create clean sheet designs of spacecraft propulsion fluids systems and components.

Responsibilities
  • Perform and document fluids and thermal analyses of liquid propellant rocket engine, tanks and feed systems.
  • Size propellant management devices (PMDs), baffles and/or screens with industry standard equations and techniques
  • Perform CFD analysis of internal flow geometries
  • Perform analysis of propellant tank phenomenon including: zero- and micro-gravity fluid management, propellant slosh and propellant mass gauging
  • Assist with validation testing of internal tank propellant management devices (baffles, AVDs, bubble point screens, etc)
  • Ensure model predictions are grounded through a practical hands-on approach
  • Contribute to developing analysis processes and tools to be used company wide.  Achieve buy-in with key stakeholders and provide training for general use
  • Provide professional development, mentorship, and technical guidance to peers

Minimum Qualifications
  • B.S. degree in Mechanical, Aerospace, or a comparable field
  • 4+ years of demonstrated experience with fluid/thermal analysis on liquid propellant rocket engines, rocket stages, spacecraft or similar high-performance systems
  • 4+ years of professional experience in fluid analysis with commercial software (e.g. Fluent, CFX, SINDA/FLUINT,) and hand-calc methods
  • Basic experience with 3D CAD software (NX preferred)

Preferred Skills and Experience
  • Advanced degree in Mechanical, Aerospace, or a comparable field
  • Experience working in fast-paced, startup environment
  • Strong fundamentals in compressible & incompressible fluid mechanics and heat-transfer, including hand calculation methods
  • Advanced proficiency with a commercial CFD tool through all stages of the workflow (geometry prep, mesh generation, setup, convergence, post-processing)
  • Familiarity with ANSYS CFX, ANSYS Fluent, and/or Star-CCM+
  • Familiarity with multi-phase fluid modeling and acceleration dominated fluid dynamics
  • Experience with anchoring CFD analysis to test or flight data
  • Experience with waterhammer and fluid network modeling (SINDA/FLUINT or other similar tools)
  • Programing experience for creating analysis tools or performing hand-calcs.   Python preferred.  Matlab or other high-level languages acceptable
  • Experience in root-cause analysis
  • Excellent verbal and written communication skills
 
Additional Requirements:
 
  • Flexible schedule and willing to travel as needed

Additional Information:
Compensation bands are determined by role, level, location, and alignment with market data. Individual level and base pay is determined on a case-by-case basis and may vary based on job-related skills, education, experience, technical capabilities and internal equity. In addition to base salary, for full-time hires, you may also be eligible for long-term incentives, in the form of stock options, and access to medical, vision & dental coverage as well as access to a 401(k) retirement plan.
Impulse Space’s spacecraft manufacturing business is subject to U.S. export regulations including the International Traffic in Arms Regulations (ITAR) and Export Administration Regulations (EAR). This position requires applicants to be either U.S. Persons (i.e., U.S. citizen, U.S. national, lawful permanent U.S. resident (green card holder), an individual granted asylum in the U.S., or an individual admitted in U.S. refugee status) or persons eligible to obtain an export license from the U.S. Departments of State, Commerce, or other applicable U.S. government agencies. Learn more about the ITAR here.  
Impulse Space is an Equal Opportunity Employer; employment with Impulse Space 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.