El Segundo, California, United States · On-site
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Spacecraft Thermal Engineer (Mid-Career) - Millennium Space Systems Company: Millennium Space Systems Job Description Millennium Space Systems, a part of Boeing Defense, Space and Security (BDS), is a fast, agile small s…
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El Segundo, California, United States · On-site
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Spacecraft Thermal Engineer (Mid-Career) - Millennium Space Systems Company: Millennium Space Systems Job Description Millennium Space Systems, a part of Boeing Defense, Space and Security (BDS), is a fast, agile small s…
Skills: Spacecraft Thermal Design, Thermal Analysis, Thermal Modeling, Thermal Desktop, Sinda/Fluint
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Supply Reliability Specialist - Millennium Space Systems Company: Millennium Space Systems Millennium Space Systems, a part of Boeing Defense, Space and Security (BDS), is a fast, agile small satellite company focused on…
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Date Posted: 2026-07-13 Country: United States of America Location: US-CA-EL SEGUNDO-E01 ~ 2000 E El Segundo Blvd ~ BLDG E01 Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: Activ…
Skills: SystemVerilog, UVM, OVM, VHDL, Verilog
El Segundo, California, United States · On-site
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Supply Reliability Specialist - Millennium Space Systems Company: Millennium Space Systems Millennium Space Systems, a part of Boeing Defense, Space and Security (BDS), is a fast, agile small satellite company focused on…
Skills: Supplier Quality Management, Receiving Inspection, AS9100 Compliance, Source Inspection, Non-conformance Management
El Segundo, California, United States · On-site
$106k–$232k/yr
Embedded Software Engineer (Associate, Experienced, or Senior) Company: The Boeing Company The Boeing Defense, Space & Security (BDS) Space Mission Systems (SMS) software capability is seeking multiple Embedded Software …
Skills: C/C++, RTOS, Embedded Linux, BSP Development, ARM Architecture
El Segundo, California, United States · On-site
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Senior Spacecraft Command and Data Handling (C&DH) Engineer - Millennium Space Systems Company: Millennium Space Systems Millennium Space Systems, a part of Boeing Defense, Space and Security (BDS), is a fast, agile smal…
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Senior Spacecraft Command and Data Handling (C&DH) Engineer - Millennium Space Systems Company: Millennium Space Systems Millennium Space Systems, a part of Boeing Defense, Space and Security (BDS), is a fast, agile smal…
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Come make your mark with Watermark! 🎖️ FOUNDED BY USAF VETERANS in 2007, we are proud to be a Service-Disabled Veteran Owned Small Business. 🌎 SUBJECT MATTER EXPERTS specializing in security and risk management. We’re …
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At DICK’S Sporting Goods, we believe in how positively sports can change lives. On our team, everyone plays a critical role in creating confidence and excitement by personally equipping all athletes to achieve their drea…
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Overview We are seeking a detail-oriented Specialist to join our Legal & Compliance team. In this role, you'll play a critical role that includes: TSA-related record auditing, data entry, and Monitoring (to include KSMS,…
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Skills: Python, PyTorch, Hugging Face Transformers, LangChain, LangGraph
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The Aerospace Corporation is the trusted partner to the nation’s space programs, solving the hardest problems and providing unmatched technical expertise. As the operator of a federally funded research and development ce…
Skills: Systems Engineering, Mission Engineering, Space Combat Power Analysis, Cameo, Afsim
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The Aerospace Corporation is the trusted partner to the nation’s space programs, solving the hardest problems and providing unmatched technical expertise. As the operator of a federally funded research and development ce…
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The Aerospace Corporation is the trusted partner to the nation’s space programs, solving the hardest problems and providing unmatched technical expertise. As the operator of a federally funded research and development ce…
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About CCS CCS Facility Services is one of the largest building service contractors in the United States, providing expert janitorial and facility engineering services to thousands of commercial businesses with a deep ben…
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El Segundo, California, United States • On-site
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Develop and analyze spacecraft thermal system configurations, designs, and models to predict thermal loads and temperature margins. Support thermal verification testing and the design and installation of MLI blankets.
Requires a Bachelor's degree in Mechanical or Aerospace Engineering, Physics, or a related field with at least 2 years of experience in spacecraft thermal systems. Must be a US Person capable of obtaining and maintaining a TS/SCI security clearance.
Job Description
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.
Job Summary
Thermal Engineers support the Spacecraft Development Program Managers and Chief Systems Engineer through the development of all spacecraft thermal system configurations, designs, analyses, testing, and flight operations. Spacecraft thermal subsystem elements includes all passive and active means of controlling the satellite’s system, subsystem, and component environments within both operating and survival limits during all pertinent system lifetime activities. Thermal engineers also have the opportunity to support MLI blanket design, fabrication, and installation.
This position’s internal job code is Mechanical System Design & Analysis Engineer. Our team is currently hiring for a level 3-4.
Perform spacecraft thermal design and analyses at the board, component, subsystem, and system level
Develop systems and spacecraft element thermal models to predict thermal loads, impacts, and temperature margins to support system design
Brief design and analysis materials to program managers, customers, and/or sponsors
Identify all materials, processes, and facilities to achieve a qualified spacecraft thermal design and operation
Assists in proposal and new business development efforts
Support thermal verification testing on spacecraft systems and components including test design, test conduct, data reduction, analysis, and reporting
Support the development of tools to aide in conceptual designs and post-processing analysis
Potential to cross-train with MLI team for hands-on support
This position is expected to be 100% onsite. The selected candidate will be required to work onsite at one of the listed location options.
This position must meet Export Control compliance requirements, therefore a “US Person” as defined by 22 C.F.R. § 120.15 is required. “US Person” includes US Citizen, lawful permanent resident, refugee, or asylee.
Bachelor’s degree in Mechanical Engineering, Aerospace Engineering, Physics, or other relevant fields
2 or more years of experience in the design, development, analysis, implementation, testing, and/or operation of spacecraft thermal systems or other related complex thermal systems
Proficiency with thermal analysis tools (e.g. Thermal Desktop, SINDA/FLUINT, ANSYS, Thermica)
Ability to obtain and maintain a TS/SCI Security Clearance
Active TS/SCI Clearance
Successful candidates for this job must satisfy the Company’s Conflict of Interest (COI) assessment process
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.
This role will be on 1st
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.
Level 3: $102,000 - $150,000
Level 4: $124,100 - $182,500
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.
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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.
Boeing Participates in E – Verify
Boeing is a leading global aerospace company that designs, builds and supports commercial airplanes, defense products and space systems for customers in more than 150 countries. Guided by our commitment to safety and quality, we innovate to deliver solutions that bring real value to our customers and the industry. As a top U.S. exporter, we work with a strong global supply base to drive economic opportunity and community impact worldwide. Our team leads with integrity and passion as it shapes the future of aerospace. Explore careers with us: boeing.com/careers 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.
Offices: 929 Long Bridge Drive, Arlington, VA 22202, US · 100 N. Riverside, Chicago, IL 60606-1596, US · 499 Boeing Blvd SW, Huntsville, AL 35824, US · 460 Herndon Pkwy, Herndon, VA 20170, US · 3455 Airframe Dr, North Charleston, SC 29418, US
