Millennium Space Systems Summer 2026 Internship Program – Optical Systems Engineering

Boeing • El Segundo, CA

1d • $21 - $36 • 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. As an Optical Systems Engineering Intern, you will support a variety of optical systems projects for our space mission programs and also internal research and development (IRAD) efforts. The Optics team members are systems engineers managing interfaces between the space vehicle and Electro-Optical (EO)/Infrared (IR) payloads and active sensing payloads. The team works closely with mission and systems engineering teams, as well as manufacturing and testing teams to lead payload systems efforts end-to-end. Over the course of our 10-12 week internship experience you will have the opportunity to:

Requirements

• Ability to work full-time for 10-12 weeks during Summer 2026
• Bachelor's or higher degree in Optical engineering, Physics, or related engineering/science field
• 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.

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

• Design, execute, and report results on Optical Lab Tests (Including EO/IR sensor tests, and active sensor tests)
• Support EO/IR Radiometric Modeling efforts
• Support selection of Optical sensors to meet space mission requirements
• Aid Optical Systems Requirements development and verification efforts

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.
• 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.

What This Job Offers

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