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Mechanical Systems Engineer II

Rocket Lab is an end-to-end space company developing responsive launch services, spacecraft, and components to enable scientific, commercial, and national security missions. The Mechanical Systems Engineer II at our Stennis Space Center test facility will design, build, maintain, and activate critical test infrastructure to support the Archimedes engine and Neutron vehicle test programs, working closely with propulsion, test operations, technicians, and suppliers.

Skills

  • Experience with rocket engine test stand or launch complex design and build
  • Proficiency in Siemens NX and Teamcenter
  • Familiarity with ASME B31.1 piping code
  • Understanding of instrumentation, sensors, and test systems integration
  • Experience with weld design and inspection practices
  • Knowledge of cryogenic propellant (LOX) and methane facility design preferred
  • Familiarity with JIRA or similar work-tracking tools
  • Basic understanding of computer networks and IT infrastructure for facility systems

Responsibilities

  • Design, build, and integrate mechanical test systems to meet test objectives and requirements
  • Collaborate with technicians and engineers to troubleshoot and resolve facility and test operations issues
  • Develop and implement maintenance protocols for new and existing facility infrastructure
  • Coordinate with Archimedes engine and Neutron vehicle teams to prepare and perform hardware tests
  • Support installation, checkout, and activation of facility systems with test operators
  • Maintain cleanliness, component-level verifications, and internal standards for test systems
  • Provide hands-on support for engine hardware and test operations as required, including nights/weekends

Education

  • Bachelor’s degree in mechanical engineering, aerospace engineering, or related technical discipline
  • ITAR eligibility for candidates seeking U.S. office roles (U.S. citizen, lawful permanent resident, refugee/asylee, or ability to obtain required authorizations)

Benefits

  • Work on high-impact spaceflight hardware and test programs
  • Competitive compensation and potential equity participation
  • Medical, dental, and vision benefits
  • 401(k) retirement plan
  • Paid time off and company holidays
  • Professional development and training opportunities
  • Collaborative, mission-driven culture
To read the complete job description, please click on the ‘Apply’ button

Average salary estimate

$90000 / YEARLY (est.)
min
max
$70000K
$110000K

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FUNDING
DEPARTMENTS
SENIORITY LEVEL REQUIREMENT
TEAM SIZE
No info
HQ LOCATION
No info
SALARY RANGE
$70,000/yr - $110,000/yr
EMPLOYMENT TYPE
Full-time, onsite
DATE POSTED
January 16, 2026
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