Millennium Space Systems Summer 2026 Internship Program – Mission Assurance Intern

Boeing • El Segundo, CA

1d • $21 - $31 • Onsite

About The Position

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. Mission Assurance is where technical truth meets mission success. Our team dives into the hardest problems, exposes hidden risk, and drives programs across the finish line with rigor and speed. We challenge assumptions, demand clarity, and raise the bar on engineering execution across the company. As an intern with the Mission Assurance team at Millennium Space Systems, you’ll work alongside experienced engineers on real spacecraft challenges. You’ll help evaluate technical decisions, support risk reduction efforts, contribute to root cause investigations, and build confidence in the satellites we deliver. This internship is structured to flex across priority areas based on applicant strengths; selected interns will be placed into one of several focus tracks with the opportunity to collaborate across functions supporting mission success and contractual execution. You can expect meaningful responsibility, strong mentorship, and rapid development. This role will develop your systems thinking, technical judgment, and communication skills while contributing directly to the success of full-cycle flight programs.

Requirements

• Ability to work full-time for 10-12 weeks during Summer 2026
• Full-time student pursuing a Bachelor’s degree (Junior or Senior year) or a Master’s degree (any year) in a relevant field, including Aerospace, Electrical, Mechanical Engineering, or Material Science.
• Proven ability to own and deliver a technically complex project in a fast-paced environment, preferably in a team setting (e.g., FSAE, senior design, rocket team, etc.)
• Interest in maintaining Class C/D mission risk posture as defined in ATR-2023-01889, such as: o Risk is a communication tool (and your friend!) o Documentation is meant to be a technical control, not bureaucracy o No single discipline guarantees mission success o Every engineering decision has measurable impacts
• Enrolled student attending a college or university with an expected graduation date on or after August 2026
• These positions 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.
• Additionally, some positions may require the ability to obtain U.S. Security Clearance for which the U.S. Government requires U.S. Citizenship.
• 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.

Nice To Haves

• Strong academic performance (preferred GPA of 3.0 or above)
• Exceptional organizational and collaboration skills as demonstrated through leadership positions on teams and/or in student or civic organizations
• Strong technical experiences as demonstrated through technical projects, research or engineering internships
• Exceptional communication skills and interest and enthusiasm related to engineering, aerospace and a career with Boeing
• Junior or Senior class standing
• Successful candidates for this job must satisfy the Company’s Conflict of Interest (COI) assessment process.

Responsibilities

• Review engineering designs, manufacturing and test documentation, and internal processes in support of finding root causes and corrective actions for issues.
• Support risk evaluation and mitigation plans for assuring mission success.
• Investigate technical problems and challenges to evaluate and recommend solutions.
• Harness existing tools or create new tools to solve technical problems via analysis, design, or simulation techniques that can be corroborated with testing.
• Design and perform tests and experiments investigating risks and failures in operational and developmental satellite programs.
• Risk Management – Support program and enterprise-level technical risk evaluation and mitigation planning to ensure mission success. Contribute to improvements in risk tracking tools and reporting methods.
• Parts, Materials, and Process (PMP) – Support in evaluating and selecting materials to satisfy design requirements for a variety of materials including polymers, adhesives, thermal interface materials, composites, metallics and materials pertaining to electronic assemblies. Support materials engineering assessments and impact analyses for flight and non-flight hardware
• Products – Support product-level process improvement initiatives to accelerate delivery and reduce defects. Help streamline cross-functional touchpoints impacting product flow.
• Operations Assurance – Advance corporate-level operations assurance vision and improve alignment with execution milestones. Assist in defining and documenting operations best practices.

Benefits

• 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.
• Summary pay range: $21.15 /hr – $30.77 / hr

What This Job Offers

• Job Type: Full-time
• Career Level: Intern