Mechanical Technician

Momentus Space•San Jose, CA

11d•$45 - $60•Onsite

About The Position

We are seeking a Mechanical Technician to support spacecraft assembly, integration, and test activities across structural, mechanical, and avionics hardware for Momentus satellite platforms and in-space transportation systems. This role supports both mechanical and electro-mechanical (avionics-adjacent) work, including hardware integration, harness routing, equipment installation, and system-level testing. The ideal candidate thrives in a fast-paced, hands-on environment and enjoys working on complex, high-reliability aerospace systems.

Requirements

Strong experience with mechanical and electro-mechanical assembly (avionics integration support)
Ability to read and interpret engineering drawings, wiring diagrams, and work instructions
Experience with standard hand tools, torque tools, and assembly fixtures
Familiarity with test and inspection equipment (multimeters, calipers, gauges, etc.)
Strong troubleshooting and problem-solving skills across mechanical and basic electrical systems
Ability to follow controlled processes and accurately document work
High attention to detail and commitment to quality and safety
Ability to lift up to 50 lbs (with assistance as needed)
Ability to stand for extended periods and work in confined spacecraft environments
Ability to work at heights (ladders, lifts up to ~18 ft)
Willingness to support off-shift, weekend, and overtime operations as required
Ability to travel to support environmental testing and launch site operations as needed
High school diploma, Associate’s degree or technical certification preferred
3+ years of hands-on electro-mechanical experience in the aerospace, aviation, military or other high-volume environment preferred

Nice To Haves

Experience with spacecraft or aerospace hardware integration (mechanical + avionics)
Experience with harness manufacturing, testing, installation, connector mating, and cable routing
Familiarity with environmental testing (TVAC, vibration, shock)
Experience working in cleanroom environments and FOD-controlled areas
Basic soldering, wiring, or IPC familiarity
A&P Certification
Experience with pressure systems, vacuum systems, or thermal hardware
Experience operating cranes, forklifts, or material handling equipment

Responsibilities

Assemble and integrate spacecraft hardware including: Structural components, mechanisms, brackets, panels, and deployables
Avionics enclosures, electronic boxes, sensors, and mounting hardware
Harnesses, connectors, coax cables, and cable management systems
Perform precision mechanical assembly using hand tools, torque tools, fixtures, and specialized equipment
Assembly, manufacture, test, and rework non-flight and spacecraft harness to specifications, schematics and work instructions by cutting, stripping, crimping, and soldering while also being able to hi-pot and electrically test validity of harness.
Support harness installation, routing, lacing/tying, connector mating, and basic electrical/mechanical interface work
Perform precision tube/line fabrication and installation where required (e.g., fluid or thermal systems)
Precision drilling, heli-coil install, and tap/die capabilities per specifications and assembly drawings.
Execute spacecraft lifting, handling, and integration operations using cranes, lifts, and handling fixtures
Support spacecraft and subsystem testing, including:
Functional testing (power, telemetry, command, RF, mechanical actuation systems)
Environmental testing (thermal vacuum, vibration, shock, burn-in)
Pressure and leak testing where applicable
Set up, operate, and monitor test equipment (DAQ systems, pressure systems, multimeters, oscilloscopes, vacuum systems)
Assist with instrumentation, sensor installation, and test configuration setup
Diagnose and resolve mechanical, electro-mechanical, and system-level issues during assembly and test
Perform rework, repair, and modification of hardware per approved procedures
Collaborate with engineering and quality teams to identify root cause and implement corrective actions
Support development and improvement of build processes, tooling, and fixtures
Build and modify basic fixtures, test aids, and ground support equipment (GSE)
Perform preventative maintenance on lab and production equipment
Participate in continuous improvement and production ramp activities
Perform in-process and final inspections using metrology tools (calipers, micrometers, gauges)
Maintain accurate build records, logs, test data, and configuration documentation
Track deviations and ensure compliance with quality and process standards
Operate in cleanroom and high-reliability production environments following FOD and contamination control practices
Support operations involving mechanical systems, electrical hardware, and controlled test environments
Follow all safety protocols (LOTO, ESD, PPE, pressure systems, lifting/handling procedures)
Maintain a clean, organized workspace aligned with 5S principles