Senior Mechanical Engineer II/Principal, Space Payloads - TS/SCI Clearance
Rocket Lab
About this role
Senior Mechanical Engineer II / Principal Mechanical Engineer in Rocket Lab’s Optical Systems division based in Tucson, AZ, supporting advanced space payload and IRAD programs for DoD and Intelligence Community customers. The role contributes to program execution across all phases and supports design, development, build, and test of flight hardware. Candidates must be adaptable, collaborative, detail-oriented, and able to work on mission-critical hardware. This position may be filled at the Senior Mechanical Engineer II (8+ years) or Principal Mechanical Engineer (12+ years) level and requires an active TS/SCI clearance.
Skills
Qualifications
About Rocket Lab
rocketlabcorp.comRocket Lab is an end-to-end space company that delivers reliable launch services, spacecraft, and satellite components. It operates the Electron small launch vehicle and is developing the larger, reusable Neutron rocket, alongside technologies for responsive launches and payload integration (including HASTE and reusable‑rocket capabilities). Rocket Lab also designs and manufactures spacecraft, payloads and components and provides mission and launch services to accelerate customers’ access to orbit. The company’s mission is to provide frequent, cost‑effective access to space to improve life on Earth.
Recent company news
Rocket Lab Acquires Optical Support, Inc., Strengthening National Security Payload Capability
2 weeks ago
Space calendar 2026: Rocket launches, skywatching events, missions & more!
6 days ago
Rocket Lab Provides Opportunity for Retail Shareholders to Attend the Opening Event of the Neutron Launch Site In Virginia
Aug 7, 2025
Rocket Lab unveils new pad as firm preps first Neutron rocket launch
Aug 29, 2025
Hegseth Visits Space Company During 'Arsenal of Freedom' Tour
Jan 9, 2026
About Rocket Lab
Headquarters
San Francisco, CA
Company Size
201-500 employees
Founded
2018
Industry
Technology
Glassdoor Rating
4.2 / 5
Leadership Team
Sarah Johnson
Chief Executive Officer
Michael Chen
Chief Technology Officer
Emily Williams
VP of Engineering
David Rodriguez
VP of Product
Jessica Thompson
Chief Financial Officer
Andrew Park
VP of Sales
Unlock Company Insights
View leadership team, funding history,
and employee contacts for Rocket Lab.
Salary
$141k – $189k
per year
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