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# Mission Systems Engineer (Principal/Sr Principal) - Signatures L

- **Company:** Northrop Grumman
- **Location:** Linthicum Heights, MD, United States
- **Experience:** Expert
- **Salary:** $108,800.0 - $163,200.0
- **Contract:** Permanent contract
- **Skills:** Systems Engineering, Confluence, JIRA, Computer Engineering, E2e Testing, Test Case, Atlassian Tools, Bitbucket
- **Published:** July 17, 2026
- **Apply:** https://www.clearancejobs.com/jobs/9038768/mission-systems-engineer-principalsr-principal-signatures-l

## About the Role

* Principal Engineer: BS in STEM with 5 years relevant experience or 3 years with MS
 * Sr Principal Engineer: BS in STEM with 8 years relevant experience or 6 years with MS
 * Active TS clearance and SCI eligibility required at time of application
 * Hardware/Software I&T Experience
 * Experience in implementing and maintaining processes

 * On-Orbit Ops experience
 * Experience coordinating between program elements
 * Experience identifying, documenting, and using SLCs
 * Experience with the Atlassian tool suite (Jira, Confluence, Bitbucket)
 * Experience with Space Vehicle tasking and I&T
 * Experience with Radar tasking and I&T
 * BS in Electrical Engineering, Computer Engineering, or Aerospace Engineering
 * Active SCI clearance

## Description

* Coordinate with Payload Assembly Integration and Test (PL AI&T), Space Vehicle (SV) AI&T, and Ops teams for development and maintenance SLCs throughout program life cycles from initial design through on-orbit ops
 * Support MSEIT System I&T team in the planning and execution of space-to-ground testing activities
 * Ground Test Cases + Ground (dev. env.) - Vehicle Sim
 * On-Orbit Check-Out Test Cases + Ground (test env.) + Vehicle Sim
 * End-to-End Testing (Select On-Orbit Test Cases + Ground (production env.) + Vehicle (launch site)
 * Support planning and track all validation testing activities from ground/payload sell-off through launch
 * Coordinate Test Case development and execution with MSEIT MGS Team and Speargun O&M team
 * Coordinate with PL and SV AI&T teams for production, set-up, and coordination of vehicle sim asset
 * Vehicle sim planning, set-up, and execution for Speargun Protoflight
 * Coordination with Mission Partners (bus and launch provider) to execute testing and maintain vehicle sim
 * Coordinate with other elements/segments (e.g. Ground, Payload) for baseline availability (e.g. ground SW, PL FSW), root cause determination, and discrepancy report (DR) resolution


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