Principal Test Engineer - Millennium Space Systems

Company: Boeing
Location: El Segundo
Posted on: April 1, 2026

Job Description:

Principal Test Engineer - Millennium Space Systems Company: Millennium Space Systems 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 to 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. As a Principal Test Engineer, you will develop manufacturing processes to test satellite avionics while dually implementing test procedures for dynamic and thermal environmental testing of components, subsystems, and satellite products. You will be responsible for providing guidance on investigation of complex test anomalies, leveraging design for testability and continuous improvement to deliver space-grade avionics at a high rate and low cost without compromising personnel safety or product reliability. A successful candidate for this role will demonstrate integrity, intellectual curiosity, empathy, technical capability, and a strong motivation to scale and support manufacturing test. This position's internal job code is Test & Evaluation Engineer. Our team is currently hiring for a level 5 and level 6. Position Responsibilities: Architect spacecraft hardware test procedures and test readiness frameworks; serve as the senior escalation point for complex issues that arise during qualification and acceptance test campaigns Lead cross-functional initiatives to identify systemic improvement opportunities that enhance safety, product quality, cycle time, and labor efficiency across environmental test operations Serve as the organization's senior technical authority for root cause analysis of environmental test anomalies, driving systemic corrective actions and preventative measures across programs Champion production autonomy by challenging requirements at the organizational level, driving process simplification across product lines, and sponsoring automation initiatives that reduce human error and manual intervention Serve as the principal subject matter expert and technical authority for environmental test processes and equipment, representing the organization in design reviews, customer engagements, and industry forums Influence product design teams to incorporate design-for-test principles early in the development lifecycle, reducing downstream test complexity and cost Basic Qualifications (Required Skills/Experience): Bachelor's degree in an engineering discipline Minimum of 10 years in a hardware test environment Demonstrated experience leading, mentoring, or technically guiding teams of engineers Extensive hands-on experience with thermal chambers, TVAC chambers, and/or vibration shakers Proven track record of authoring test procedures, driving process improvements, and managing non-conformances at scale Strong technical writing, verbal communication, and cross-functional stakeholder management 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. Security Clearance Post-Start is required Preferred Qualifications (Desired Skills/Experience): Master's degree in an engineering discipline Minimum of 12 years of experience in environmental testing, with deep expertise in vibration, thermal ambient, and thermal vacuum testing Expert-level knowledge of SMC-S-016, MIL-STD-1540, GSFC-STD-7000A, or similar environmental testing standards, including the ability to interpret, tailor, and negotiate requirements with customers Proven experience scaling environmental test operations in a high-throughput manufacturing environment from development to full-rate production Expert-level understanding of root cause analysis and related analytical methodology (Five Whys, Fishbone/Ishikawa Analysis, 8D, FMEA, etc.) 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 5: $137,000 - $244,00 Level 6: $167,000 - $298,000 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. Language Requirements: Not Applicable Education: Bachelor's Degree or Equivalent Relocation: Relocation assistance is not a negotiable benefit for this position. Export Control Requirement: This position must meet U.S. export control compliance requirements. To meet U.S. export control compliance requirements, a “U.S. Person” as defined by 22 C.F.R. §120.62 is required. “U.S. Person” includes U.S. Citizen, U.S. National, lawful permanent resident, refugee, or asylee. Safety Sensitive: This is not a Safety Sensitive 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/SCI Clearance Post-Start is required. Visa Sponsorship: Employer will not sponsor applicants for employment visa status. Contingent Upon Award Program This position is not contingent upon program award Shift: Shift 1 (United States of America) Stay safe from recruitment fraud! The only way to apply for a position at Boeing is via our Careers website. Learn how to protect yourself from recruitment fraud - Recruitment Fraud Warning 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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