Millennium Space Systems Summer 2026 Internship Program – Astrodynamics Intern

Boeing•El Segundo, CA

2d•$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. In this role, the intern will work alongside the astrodynamics team to support mission analysis tasks for several programs. This will include expanding the test coverage of in-house astrodynamics software in Matlab and Python, improving and optimizing modeling and simulation tools to run more efficiently, and assisting in the development of new tools and demonstrations. The intern will improve and expand upon our growing in-house mod and sim capabilities while gaining experience in orbital mechanics, orbit determination, maneuver planning, rendezvous, constellation design, coverage analysis, and cislunar modeling. Over the course of our 10-12 week internship experience you will have the opportunity to: Write unit test functions for in-house astrodynamics software. Develop illustrative examples and tutorials for core astrodynamics tools Build automated test suites for select programs Develop one or more new astrodynamics tools Present work to the engineering team at the end of summer 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 Aerospace engineering or equivalent major
Proficient with MATLAB and Python
Experience using GMAT
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.
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