Spacecraft Software Simulation & Test Engineer - Millennium Space Systems

Spacecraft Software Simulation & Test Engineer - Millennium Space Systems

El Segundo, California; Los Angeles, California Job ID JR2026528041 Category Security Clearance Role Type Onsite Post Date Nov. 10, 2026

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Job Description

At Boeing, we innovate and collaborate to make the world a better place. We're committed to fostering an environment for every teammate that's welcoming, respectful and inclusive, with great opportunity for professional growth. Find your future with us.

Millennium Space Systems, a part of Boeing Defense, Space and Security (BDS), is a fast, agile small satellite company focused on national security space. Our missions have direct impact on global security, like missile warning and Earth observation.

Our team is curious, bold and innovative. We take risks, innovate and explore new techniques and technologies. We influence change because we challenge the status quo. And when we watch our satellites launch, we know each one of us made it happen.

Job Summary:

As aSoftware 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

This position''s internal job code is Software Engineer-Embedded. Our team is currently hiring for Level 1

This position is expected to be 100% onsite. The selected candidate will be required to work onsite at one of the listed location options.

Basic Qualifications (Required Skills/Experience):

• 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

Conflict of Interest:

Successful candidates for this job must satisfy the Company's Conflict of Interest (COI) assessment process

Drug Free Workplace:

Millennium Space Systems, a Boeing Company, is a Drug Free Workplace (DFW) where post offer applicants and employees are subject to testing for marijuana, cocaine, opioids, amphetamines, PCP, and alcohol when criteria is met as outlined in our policies.

Total Rewards:

At Millennium Space Systems, a Boeing Company, we strive to deliver a Total Rewards package that will attract, engage and retain the top talent. Elements of the Total Rewards package include competitive base pay and variable compensation opportunities.

Millennium Space Systems also provides eligible employees with an opportunity to enroll in a variety of benefit programs, generally including health insurance, flexible spending accounts, health savings accounts, retirement savings plans, life and disability insurance programs, and a number of programs that provide for both paid and unpaid time away from work.

The specific programs and options available to any given employee may vary depending on eligibility factors such as geographic location, date of hire, and the applicability of collective bargaining agreements.

Pay is based upon candidate experience and qualifications, as well as market and business considerations

Summary Pay Range:

• Level 1: $82,500 - $123,000

Millennium is DDTC-registered, ITAR-compliant Company. This position is located at a facility that requires special access. Applicants MUST be U.S. citizens and eligible for a security clearance. Additionally, applicants must be willing to apply for and maintain a security clearance. We encourage all interested candidates to apply for any open position for which they feel they are qualified.

Category = Engineering

Applications for this position will be accepted until Nov. 30, 2026

Export Control Requirements:

If the successful candidate is not a "U.S. Person" (as defined by 22 C.F.R. § 120.62 "U.S. Person" includes U.S. citizens and U.S. nationals, lawful permanent residents, refugees, or asylees) and the position requires access to export-controlled data, an appropriate export authorization by the U.S. Government may be required prior to such access. Employment, and the continuity of employment of non-U.S. persons, is contingent upon the company's ability to secure and maintain the necessary export control authorization.

Export Control Details:

US based job, US Person not required

Relocation

Relocation assistance is not a negotiable benefit for this position.

Security Clearance

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.

Visa Sponsorship

Employer will not sponsor applicants for employment visa status.

Shift

This position is for 1st shift

Equal Opportunity Employer:

Boeing is an Equal Opportunity Employer. Employment decisions are made without regard to race, color, religion, national origin, gender, sexual orientation, gender identity, age, physical or mental disability, genetic factors, military/veteran status or other characteristics protected by law.

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