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Millennium Space Systems Summer 2026 Internship Program –Thermal Engineering

El Segundo, California Job ID JR2026498088 Category Business Support Services Role Type Onsite Post Date Feb. 24, 2026
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Job Description

At Boeing, we innovate and collaborate to make the world a better place. We’re committed to fostering an environment for every teammate that’s welcoming, respectful and inclusive, with great opportunity for professional growth. Find your future with us.

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.

The thermal engineering intern at Millennium Space Systems will support thermal analysis and test efforts for our spacecraft and avionics. This will include using thermal analysis software to build, validate, and run thermal models, as well as oversee test planning, setup, execution, and report generation. The thermal engineering intern will support one or more of our active satellite programs, contributing to our company goal of delivering advanced satellite constellations to our customers.

Over the course of our 10-12 week internship experience you will have the opportunity to:

  • Build, validate, analyze, and post-process thermal models in Thermal Desktop / SINDA
  • Plan, setup, execute, and generate post-test reports for thermal vacuum (TVAC) testing of spacecraft components
  • Support Thermal Vacuum testing of Spacecraft (SCTV)
  • Assist program Thermal Responsible Engineering Authorities with documentation and model post-processing
  • Attend team and program meetings, provide status on project(s) to appropriate stakeholders


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.

Basic Qualifications (Required Skill/Experience):

  • Ability to work full-time for 10-12 weeks during Summer 2026
  • Basic understanding of thermodynamics, heat transfer (with focus on conduction and radiation)
  • Pursuing a degree in an Engineering field (ex: Mechanical, Aerospace, Chemical, Energy, Materials, etc.)
  • Proficiency in at least one CAD software (SolidWorks, AutoCAD, etc.), and MS Office Products (Excel, PowerPoint, etc.)
  • Enrolled student attending a college or university with an expected graduation date on or after August 2026

Preferred Qualifications (Desired Skills/Experience):

  • 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.

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.

Shift:

These positions are for 1st shift.

Safety Sensitive Statement:

Some of these positions are safety-sensitive positions and are subject to random drug and alcohol testing.

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: $21.15 /hr – $30.77 / hr

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.


Applications for this position will be accepted until Mar. 24, 2026


Export Control Requirements:

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.

Export Control Details:

US based job, US Person required

Relocation

Relocation assistance is not a negotiable benefit for this position.

Visa Sponsorship

Employer will not sponsor applicants for employment visa status.

Shift

This position is for 1st shift


Equal Opportunity Employer:

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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Your Benefits

No matter where you are in life, our benefits help prepare you for the present and the future.

  • Generous company match to your 401(k).
  • Industry-leading tuition assistance program pays your institution directly.
  • Fertility, adoption, and surrogacy benefits.
  • Up to $10,000 gift match when you support your favorite nonprofit organizations.
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These programs are subject to eligibility requirements and other conditions, which may differ for employees of certain subsidiaries or business units, or union-represented employees depending on bargaining agreement terms. If this information conflicts with the program documents, the latter shall control. This material is informational only.

  • Jacob M
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