> Markdown version of [/jobs/ext/4591033-systems-engineer-iii-se3-test-engineering](https://www.wearedevelopers.com/jobs/ext/4591033-systems-engineer-iii-se3-test-engineering). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md).

---

# Systems Engineer III (SE3) | Test Engineering

- **Company:** FullScope Staffing LLC
- **Location:** Linthicum Heights, MD, United States
- **Contract:** Permanent contract
- **Skills:** Systems Engineering, Signals Intelligence, Software Requirements Analysis, System Testing, System-level Testing, Integration Tests
- **Published:** November 5, 2026
- **Apply:** https://www.clearancejobs.com/jobs/9290311/systems-engineer-iii-se3-test-engineering

## About the Role

Experience developing and executing system-level tests and documenting results.
-Familiarity with military service organizations or operations.
-Familiarity with signals intelligence (SIGINT) concepts, systems, or workflows.
-Ability to collaborate across technical teams and communicate findings clearly.

## Description

We're seeking a Systems Engineer III to plan and execute system testing in a military signals intelligence (SIGINT) environment. This role works closely with systems engineers, developers, and other team members to verify system requirements, investigate issues, and communicate test results., Develop test plans, procedures, and cases based on system requirements.
-Execute system and integration tests, document results, and maintain traceability between requirements and test cases.
-Work with engineers to reproduce defects, investigate issues, and verify fixes.
-Communicate test progress, findings, and risks to the team.