Staff Mechanical Design Engineer

Momentus Space LLC•San Jose, CA

15h•$190,000 - $215,000•Onsite

About The Position

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.

Requirements

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

Nice To Haves

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

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