Summer Internship Program –Thermal Engineering

Company

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 a direct impact on global security, including missile warning and Earth observation. Our team is curious, bold, and innovative, taking risks and exploring new techniques and technologies to challenge the status quo and deliver advanced satellite constellations.

As a Thermal Engineering Intern you will support thermal analysis and testing for our spacecraft and avionics. The role includes building and validating thermal models with Thermal Desktop/SINDA, overseeing test planning and execution, and generating post‑test reports. You will work on one or more active satellite programs during a 10‑12 week internship, gaining hands‑on experience in the design and verification of satellite thermal systems.

• Build, validate, analyze, and post‑process thermal models in Thermal Desktop / SINDA.
• Plan, set up, 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, providing status updates on projects to stakeholders.

• Will be able to work full‑time for 10‑12 weeks during Summer 2026.
• Basic understanding of thermodynamics and heat transfer (conduction and radiation).
• Pursuing a degree in an engineering field (Mechanical, Aerospace, Chemical, Energy, Materials, etc.).
• Proficiency in at least one CAD software (Solid Works, AutoCAD, etc.) and MS Office (Excel, PowerPoint, etc.).
• Enrolled student at a college or university with an expected graduation date on or after August 2026.

• Strong academic performance (preferred GPA of 3.0 or above).
• Exceptional organizational and collaboration skills demonstrated through leadership roles.
• Technical experience through projects, research, or prior engineering internships.
• Excellent communication skills and enthusiasm for aerospace engineering.
• Junior or senior class standing.

• The internship is 100% onsite; selected candidates must work at one of the listed locations.
• Must meet U.S. export control compliance requirements as a “U.S. Person” (U.S. citizen, national, lawful permanent resident, refugee, or asylee).
• Candidates may need to obtain a U.S. security clearance, requiring U.S. citizenship.
• Applicants must be willing to apply for and maintain a security clearance.

Millennium Space Systems is a drug‑free workplace. Qualified employees are subject to drug and alcohol testing as outlined in our policies.

Some positions are safety‑sensitive and may be subject to random drug and alcohol testing.

Hourly pay ranges between $21.15 and $30.77, based on experience and qualifications. The company offers a Total Rewards package that includes competitive base pay, variable compensation, health insurance, flexible spending accounts, health savings accounts, retirement plans, life and disability insurance, and paid/unpaid time off. Eligibility for specific benefits depends on location and other factors.

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 or veteran status, or other characteristics protected by law. EEO is the law.

• Right to Work (English)
• Right to Work (Spanish)
• E‑Verify (English)
• E‑Verify (Spanish)