Staff Mechanical Design Engineer

Momentus Space LLC

$190K — $215K *
Aerospace & Defense
11 - 15 years of experience
Job Overview by Ladders

Qualifications

  • 5-7 years of mechanical design experience in high-stakes environments
  • Proficient in CAD tools like SolidWorks
  • Expertise in structural analysis methods including FEA
  • Familiarity with drafting standards such as GD&T
  • Experience with mechanical systems requirements definition
  • Knowledge of material selection for space applications
  • Excellent written and verbal communication skills

Responsibilities

  • Develop subsystem-level mechanical solutions for thermal and vibration challenges
  • Lead mechanical discipline in design reviews and customer interactions
  • Oversee hardware integration and verification tasks
  • Collaborate with structural analysts to ensure spacecraft integrity
  • Work with thermal analysts to manage component temperature limits
  • Conduct various mechanical tests including vibration and load testing
  • Support TVAC testing as required

Benefits

  • Medical, dental, and vision insurance
  • 401k retirement plan
  • Short and long-term disability and life insurance
  • Flexible PTO and 11 paid holidays
  • Sick leave and paid parental leave
Full Job Description
JOB SUMMARY

As the Staff Mechanical Design Engineer, you will serve as the mechanical technical authority for our spacecraft, leading hardware development from early concept through production deployment. This role will collaborate cross-functionally with Electrical, Systems, Manufacturing, and Supply Chain teams to deliver integrated hardware solutions. The ideal candidate should be accustomed to working in a fast-paced environment and quickly adapting to new challenges.

Key Responsibilities
  • Own subsystem-level mechanical solutions, ensuring performance in demanding thermal and high-vibration environments
  • Represent the mechanical discipline in internal and external design reviews and customer engagements
  • Support hardware integration, verification, and production readiness activities within secure program environments
  • Work with structural analysts to ensure structural integrity of the spacecraft and all components during all phases of launch
  • Work with thermal analysts to ensure all components are maintained within acceptable temperature limits
  • Conduct mechanical testing of systems and components including vibration testing, static load testing, and shock testing
  • May be asked to support TVAC testing on an as-needed basis

Required Skills and Experience
  • Demonstrated experience with detailed mechanical design, including technical subcontractor and vendor collaboration
  • Proficiency in CAD software (e.g., SolidWorks)
  • Strong understanding of structural analysis techniques, including finite element analysis (FEA) and hand calculations
  • Strong understanding of drafting standards such as GD&T
  • Experience defining requirements for mechanical systems and components.
  • Familiarity with the space environment and how it affects mechanical hardware
  • Familiarity with material selection and material coatings for space applications
  • General understanding of spacecraft structural loads (quasi-static loads, random vibration, shock, thermo-mechanical)
  • Ability to work independently
  • Excellent technical communications skills
  • Good written and verbal communications skills

Desired Skills and Experience:
  • Experience designing, manufacturing, and testing space hardware with demonstrated on-orbit success
  • Experience running structural vibration testing
  • Experience running TVAC tests
  • Structural and/or thermal analysis experience
  • Previous experience working on DoD and other USG development and deployment programs
  • Ability to hold and maintain a USG Security Clearance

Education & Work Experience:
  • BS degree in Mechanical Engineering, or a closely related discipline
  • 12-15+ year relevant experience

Compensation:

Annual Base Salary Range: $190,000 - $215,000/per year

Base pay is one part of our total compensation package (base+bonus+equity) and is determined within a range. Your actual base salary will be determined on job-related knowledge and skills, education, and experience. Our benefit plans include medical, dental, and vision insurance, 401k retirement plan, short and long term disability and life insurance. We also offer flexible PTO, along with 11 paid holidays, sick time and paid parental leave.

This is a full-time position in San Jose, California. This position requires access to export-controlled commodities, technical data, technology, software, and services. U.S. citizenship, U.S. legal permanent resident status, or protected person status under 8 U.S.C. § 1324b(a)(3) is required.

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