Mechanical engineer jobs in Los Angeles, CA

• Thermal Engineering Internship - Summer 2027

  Varda Space Industries El Segundo, CA
  Internship Oct 1, 2026
• Propulsion Design Engineer I, Integrated Design

  Relativity Space Long Beach, CA $90K–$136K/yr
  Full Time Sep 30, 2026
• Propulsion Systems Analyst II

  Rocket Lab Corporation Long Beach, CA $136.1K–$168.8K/yr
  Full Time Sep 30, 2026
• Senior Propulsion Test Responsible Engineer

  Relativity Space Long Beach, CA $132K–$198K/yr
  Full Time Sep 30, 2026
• Senior Mechanical Engineer I

  Rocket Lab Corporation Pasadena, CA $135.5K–$179.7K/yr
  Full Time Sep 24, 2026
• Avionics Mechanical Engineer II

  Relativity Space Long Beach, CA $104K–$156K/yr
  Full Time Sep 23, 2026
• Launch Mechanical Engineer II

  Relativity Space Long Beach, CA $104K–$143K/yr
  Full Time Sep 18, 2026
• Propulsion Analyst Intern Summer 2027

  Rocket Lab Corporation Long Beach, CA $28/hr
  Internship Sep 16, 2026
• Propulsion Analyst Intern Spring 2027

  Rocket Lab Corporation Long Beach, CA $28/hr
  Internship Sep 16, 2026
• Mechanical Engineering Intern Summer 2027

  Rocket Lab Corporation Long Beach, CA $28/hr
  Internship Sep 14, 2026
• Propulsion Design Intern Spring 2027

  Rocket Lab Corporation Long Beach, CA $28/hr
  Internship Sep 11, 2026
• Propulsion Engineer II - Hardware and Bus Systems

  Varda Space Industries El Segundo, CA $119.5K–$152.7K/yr
  Full Time Sep 10, 2026
• Senior Vehicle Structures Engineer

  Relativity Space Long Beach, CA $132K–$198K/yr
  Full Time Sep 4, 2026
• Senior Mechanical Engineer (Mechanisms)

  Relativity Space Long Beach, CA $132K–$198K/yr
  Full Time Sep 4, 2026
• Senior Electro-Mechanical Engineer

  Relativity Space Long Beach, CA $132K–$198K/yr
  Full Time Sep 4, 2026
• Propulsion Technician II, Valves, Second Shift

  Relativity Space Long Beach, CA $28.27–$42.40/hr
  Full Time Sep 3, 2026
• Staff Avionics Mechanical Engineer

  Relativity Space Long Beach, CA $150K–$226K/yr
  Full Time Sep 2, 2026
• Senior Avionics Mechanical Engineer

  Relativity Space Long Beach, CA $129K–$193K/yr
  Full Time Sep 2, 2026
• Structures Engineering Intern - Spring/Summer/Fall 2027

  Hermeus Los Angeles, CA $25–$33/hr
  Internship Sep 2, 2026
• Propulsion Component Engineering Intern - Spring 2027

  Hermeus Los Angeles, CA $25–$33/hr
  Internship Aug 31, 2026
• Mechanical Engineering Intern - Summer/Fall 2027

  Hermeus Los Angeles, CA $25–$33/hr
  Internship Aug 31, 2026
• Senior Mechanical Engineer (Terran-R Structures)

  Relativity Space Long Beach, CA $132K–$198K/yr
  Full Time Aug 18, 2026
• Senior Structures Engineer

  Relativity Space Long Beach, CA $132K–$198K/yr
  Full Time Aug 18, 2026
• Propulsion Manufacturing Engineer II, Combustion Devices

  Relativity Space Long Beach, CA $104K–$156K/yr
  Full Time Aug 17, 2026
• Propulsion Integration & Test Engineer II, First Shift

  Relativity Space Long Beach, CA $109K–$163K/yr
  Full Time Aug 13, 2026

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