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59 propulsion engineer jobs at 12 companies in Lakewood, CO

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Propulsion Engineer Senior
Greenwood Village, Colorado, United States
$115k-$160k/yr OnsiteFull Time
York Space Systems
York Space SystemsNYSE: YSS: U.S. space and defense prime building spacecraft and integrated mission solutions for national-security, government, and commercial customers.
4+ YOEBachelor's in engineering or science, 4+ years propulsion or spacecraft experience, expertise in electric and chemical propulsion, hands-on testing and qualification experience, ability to obtain security clearance, strong communication and mentoring skills.
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1w
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Mechanical Propulsion Engineer
Englewood, Colorado, United States
$79k-$147k/yr OnsiteFull Time
Lockheed Martin
Lockheed MartinNYSE: LMT: Global security and aerospace driving innovative defense solutions.
Bachelor’s degree in aerospace, mechanical, or related engineering; complex mechanical design and drawing interpretation; Microsoft Office; engineering lifecycle knowledge; propulsion or related technical exposure; collaborative skills.
Microsoft Office, CAD, SolidWorks, CREO, MATLAB
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Senior Propulsion Engineer, Analysis
Denver, Colorado, United States
OnsiteFull Time
Singularity Defense Corp.
Singularity Defense Corp.: U.S. aerospace and defense manufacturer building scalable counter-weapon systems for warfighters and civilians.
5+ YOEB.S. in engineering, 5+ years propulsion experience (2+ years on composite propellant systems), FEA/CFD proficiency, hands-on lab and production experience, ballistic modeling, MATLAB/Python skills, MIL-SPEC familiarity, and technical leadership/mentorship.
SPP, CLWire, ANSYS, Abaqus, NASTRAN, ANSYS Fluent, STAR-CCM+, MATLAB, Python
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Senior Propulsion Development Engineer
Centennial or Denver
$135k-$190k/yr OnsiteFull Time
True Anomaly
True Anomaly: Delivering decisive capabilities for space superiority and security.
8+ YOEBachelors in engineering, 8+ years in propulsion or fluid systems test engineering, experience defining test-stand requirements, conducting trade studies, facility design support, and strong written/verbal communication.
LabVIEW, Python, MATLAB
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Propulsion Engineer, Fluid & Mechanical Systems
Berthoud, Colorado, United States
$76k-$95k/yr OnsiteFull Time
Ursa Major
Ursa Major: A privately held aerospace-defense delivering hypersonics, solid rocket motors, and space mobility systems.
1+ YOEBachelor's degree in engineering; hands-on mechanical design experience; fluid mechanics expertise; CAD proficiency; standards knowledge; leadership ability. Preferred: propulsion, high-pressure fluids, Ansys, Creo or NX, Windchill, and analysis experience.
Computer Aided Design (CAD), Ansys FEA, PTC Creo, Siemens NX, Windchill PLM, SMC-S-016, ASME Y14.5, ISO 9001, AS9100
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3w
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Propulsion Systems Engineer 3
Centennial or Cape Canaveral
$104k-$173k/yr OnsiteFull Time
United Launch Alliance
United Launch Alliance: Private 50-50 aerospace joint venture providing rocket launch services for government and commercial customers.
4+ YOEBachelor's in engineering and minimum 4 years related experience; mechanical/aerospace degree preferred; ability to design, integrate, and support cryogenic, pneumatic, and hydraulic propulsion fluid systems; valid driver's license; U.S. Person required for NAC-I.
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1w
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Mechanical Propulsion Engineer
Englewood, Colorado, United States
$79k-$147k/yr OnsiteFull Time
Lockheed Martin
Lockheed MartinNYSE: LMT: Global security and aerospace driving innovative defense solutions.
Bachelor's degree in aerospace, mechanical, or related engineering; mechanical design and drawing interpretation experience; Microsoft Office proficiency; engineering lifecycle knowledge; collaborative teamwork skills.
Microsoft Office, CAD, SolidWorks, Creo, MATLAB
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Engineer Senior – Space Vehicle Propulsion
Boulder, Colorado, United States
$97k-$165k/yr OnsiteFull Time
BAE Systems
BAE SystemsLSE: BA.: Global defense, aerospace, and security technology.
4+ YOEBS in engineering (or related) with 4+ years related experience; hands-on assembly/integration/test of pressurized in-space propulsion systems; able and eligible to obtain Top Secret/SCI polygraph; U.S. person/citizen required.
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2026 Intern Conversion - Propulsion Engineer I
Seattle or Van Horn or Denver or Huntsville or Florida or Arlington or Los Angeles or Longmont or Reston
$75k-$114k/yr OnsiteFull Time
Blue Origin
Blue Origin: Developing reusable space vehicles and infrastructure.
Completed a 2026 Blue Origin internship; enrolled in or recently graduated from college; bachelor's degree in mechanical, aerospace, or astronautical engineering; U.S. work authorization; strong communication and independent teamwork skills.
Defense Biometric Identification System (DBIDS)
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Sr Mechanical Engineer - Propulsion
Centennial or Louisville
$137k-$189k/yr OnsiteFull Time
Sierra Space
Sierra Space: Commercial space and defense technology.
8+ YOEBachelor's in related field (or equivalent experience), typically 8+ years engineering experience, expertise in mechanical systems, ability to solve complex problems, work with limited oversight, and mentor junior engineers.
NX, SolidWorks, ANSYS, GD&T
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Turbomachinery Structural Analysis Engineer
Centennial, Colorado, United States
$85k-$170k/yr OnsiteFull Time
Boom Supersonic
Boom Supersonic: Private American aerospace manufacturer building supersonic airliners, engines, and gas turbines for airlines and AI data centers.
5+ YOEBachelor's or Master's in Mechanical/Aerospace engineering, 5+ years experience, proficiency in Python, FEA (ANSYS Mechanical/NASTRAN), fatigue and rotating-structure assessments, CAD navigation, and multidisciplinary collaboration. ITAR eligibility required.
Python, ANSYS Mechanical, NASTRAN, LS-DYNA, FEA, CAD, MDAO
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Spacecraft Manufacturing Engineer
Centennial or California
$98k-$171k/yr OnsiteFull Time
General Atomics Electromagnetic Systems (GA-EMS)
General Atomics Electromagnetic Systems (GA-EMS): Private U.S. defense technology division developing electromagnetic, power, space, and nuclear systems for government and commercial customers.
9+ YOEBachelor's in engineering or related technical field plus 9+ years of manufacturing engineering experience, or equivalent. Satellite AIT, systems integration, testing, communication, and propulsion experience required; U.S. citizenship and TS-SCI eligibility required.
TVAC, GD&T, DFM, MGSE, EGSE, BOM, EMI
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Senior Manufacturing Engineer, Life-Cycle
Knoxville or Centennial or Loveland or Mount Vernon
OnsiteFull Time
Beehive Industries
Beehive Industries: U.S.-based manufacturer of additively manufactured jet engines for uncrewed aerial defense applications.
5+ YOEBachelor’s degree in engineering and 5+ years of manufacturing engineering experience in aerospace, defense, propulsion, additive manufacturing, or complex mechanical systems. U.S. citizenship and ability to obtain a security clearance required.
APQP, PFMEA, SPC, GD&T
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3mo
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Satellite Operations Engineer
Louisville, Colorado, United States
$85k-$165k/yr HybridFull Time
Capella Space Corp.
Capella Space Corp.: Capella is an American satellite manufacturer and SAR Earth-observation provider serving government and commercial customers.
2+ YOEBachelor’s or Master’s in aerospace engineering, mathematics, computer science, physics, or related field; 2+ years experience; Python proficiency; knowledge in at least one of: astrodynamics, GNC, EE, communications, thermal, embedded software, propulsion; Git experience.
Python, Git
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Senior Thermal Fluids Engineer
Broomfield, Colorado, United States
OnsiteFull Time
Karman Space & Defense
Karman Space & DefenseNYSE: KRMN: Provider of mission-critical aerospace and defense system solutions.
Deep aerospace experience in thruster design, propellant systems, heat transfer, and space-rated thermal management; proficiency with FEA, CFD, propulsion modeling, and CAD; strong communication and multidisciplinary collaboration skills.
FEA, CFD, CAD
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