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# Spacecraft Software Simulation & Test Engineer - Millennium Spac

- **Company:** Boeing Company
- **Location:** El Segundo, CA, United States
- **Salary:** $82,500 - $123,000
- **Contract:** Contract
- **Skills:** Testing (Software), Systems Engineering, Automation of Tests, C++ (Programming Language), Continuous Integration, Software Debugging, Python (Programming Language), Strategies of Testing, Gitlab, Git, Gitlab-ci, Information Technology
- **Published:** November 11, 2026
- **Apply:** https://www.clearancejobs.com/jobs/9307524/spacecraft-software-simulation-test-engineer-millennium-spac

## About the Role

* Bachelor's degree or higher in Computer Science, Systems Engineering, or a related technical discipline
 * 1+ years of software testing experience
 * Experience writing automated tests
 * Experience with Python, C and/or C++
 * Experience with Git and GitLab
 * Experience with continuous integration
 * This position requires the ability to obtain a U.S. Top Secret Security Clearance for which the U.S. Government requires U.S. Citizenship. A Final Top Secret Clearance is required post start.

Preferred Qualifications (Desired/Skills/Experience):

 * Experience in writing test documents (test plans/procedures, SQA plans)
 * Experience in designing functional and non-functional test cases that verify requirements and validate functionality
 * Experienced in test result evaluation, reporting and metrics
 * Excellent analytical, debugging, problem-solving and root-cause analysis skills, This position requires the ability to obtain a U.S. Security Clearance for which the U.S. Government requires U.S. Citizenship. An interim and/or final U.S. Top Secret Clearance Post-Start is required.

## Description

As a Software Test Engineer, you will support the Flight Software Team in analyzing, designing, and testing of software products for Millennium Space Systems. This position will review functional requirements and user stories from the customer and other subsystems, design test plans, write test cases, oversee test strategies and perform testing for assigned applications.

This position will also submit and verify defects, maintain documentation of test results to assist in debugging and modification of Millennium Space Systems software, analyze test results to certify existing functionality and integrations and recommend corrective action upon failures. We are looking for someone who wants to find ways to break our software.

Position Responsibilities:

 * Develop comprehensive test plans and detailed test cases to validate requirements and system performance
 * Design, write, and execute automated test scripts
 * Debug software and test failures on flight hardware and in emulated environments
 * Analyze test results to verify functionality, investigate anomalies, and recommend corrective actions
 * Own and optimize GitLab CI/CD pipelines for automated test execution and reporting
 * Support additional program and team objectives as needed to ensure mission success