Millennium Space Systems Summer 2026 Internship Program – Flight Software 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. As a Flight Software Intern, you’ll create the software that makes our satellites function in orbit. We are looking for software interns that can write (and test!) robust embedded C/C++. Your code will run on our custom avionics, process signals from sensors like our star trackers, and command actuators like the propulsion system. Over the course of our 10-12 week internship experience you will have the opportunity to: Implement designs in C/C++, integrate software components, create and run unit tests, validate on Hardware-in-the-Loop and release real-time embedded solutions Assist with system verification and qualification, assessing the outputs and documenting the results to ensure software products that meet system requirements and mission-critical standards Work with hardware engineers to verify hardware-hardware and hardware-software interfaces Perform code reviews to ensure the software being developed is functionally correct, efficient, and meets our coding standards This position is expected to be 100% onsite. The selected candidate will be required to work onsite at one of the listed location options. 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.

Requirements

• Ability to work full-time for 10-12 weeks during Summer 2026
• Pursuing bachelor's Degree in Computer Science, Computer Engineering, Electrical Engineering or similar with focus on software development
• Experience in C and C++ programming
• Experience with Linux in an embedded environment and/or bare metal C on a microcontroller
• 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

• Implement designs in C/C++, integrate software components, create and run unit tests, validate on Hardware-in-the-Loop and release real-time embedded solutions
• Assist with system verification and qualification, assessing the outputs and documenting the results to ensure software products that meet system requirements and mission-critical standards
• Work with hardware engineers to verify hardware-hardware and hardware-software interfaces
• Perform code reviews to ensure the software being developed is functionally correct, efficient, and meets our coding standards

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