Spacecraft Thermal Engineer (Mid-Career) - Millennium Space Systems

Millennium Space Systems; El Segundo (CA); On-site; USD 102,000 - 182,500; Full time

Benefits offered by this job

Health insurance

Retirement savings plans

Paid time off

Job summary

Millennium Space Systems is hiring a Thermal Engineer to support the Spacecraft Development Program by developing and analyzing thermal configurations, testing, and flight operations across all system stages.

Responsibilities include creating thermal models, supporting proposal efforts, and collaborating with PMs and customers. This is a 1st shift, onsite position in California, requiring TS/SCI clearance eligibility.

Qualifications

• Bachelor’s degree in Mechanical Engineering, Aerospace Engineering, Physics, or a related field.
• Two or more years of experience in spacecraft thermal systems design, development, analysis, and testing.
• Proficiency with thermal analysis tools: Thermal Desktop, SINDA/FLUINT, ANSYS, Thermica.
• Ability to obtain and maintain a TS/SCI Security Clearance.

Responsibilities

• Perform spacecraft thermal design/analysis at board, component, subsystem, and system levels.
• Develop thermal models to predict loads, margins, and impacts on design.
• Brief design results to program managers, customers, and sponsors.
• Identify materials, processes, and facilities for qualified thermal designs.

Skills

Thermal design

Education

Bachelor’s degree in relevant field

Tools

Thermal Desktop

SINDA/FLUINT

ANSYS

Thermica

Job description

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 direct impact on global security, such as missile warning and Earth observation.

Job Description

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. This includes passive and active control of the satellite’s environment across all system stages, and may also involve support for MLI blanket design, fabrication, and installation.

Job Summary

The internal job code is Mechanical System Design & Analysis Engineer. This team is hiring for a level 3-4.

Responsibilities

• 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
• Assist in proposal and new business development efforts
• Support thermal verification testing on spacecraft systems and components—including test design, conduct, data reduction, analysis, and reporting
• Support the development of tools to aid in conceptual designs and post‑processing analysis
• Potential to cross‑train with the MLI team for hands‑on support

Security Clearance & Export Control Requirements

This position must meet U.S. export control compliance requirements. The applicant must be a U.S. Person as defined by 22 C.F.R. and be able to obtain and maintain a TS/SCI Security Clearance.

Minimum Qualifications

• Bachelor’s degree in Mechanical Engineering, Aerospace Engineering, Physics, or a related field
• Two or more years of experience in the design, development, analysis, implementation, testing, and/or operation of spacecraft thermal systems or other 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

Preferred Qualifications

• Active TS/SCI Clearance

Shift

1st shift. Position is 100% onsite. The selected candidate will be required to work at one of the listed location options.

Total Rewards

Competitive base pay and variable compensation opportunities. Eligible employees may enroll in a variety of benefit programs, generally including health insurance, flexible spending accounts, health savings accounts, retirement savings plans, life and disability insurance, and paid and unpaid time off. Pay is based on candidate experience, qualifications, market, and business considerations.

Pay Range

• Level 3: $102,000 – $150,000
• Level 4: $124,100 – $182,500

Language Requirements

Not applicable.

Education

Bachelor’s Degree or Equivalent.

Relocation

Relocation assistance is not a negotiable benefit for this position.

Security Clearance

Ability to obtain a U.S. Security Clearance for which the U.S. Government requires U.S. citizenship. An interim and/or final U.S. Secret Clearance post‑start is required.

Visa Sponsorship

Employer will not sponsor employment visa status.

EEO Statement

Boeing is an Equal Opportunity Employer. Employment decisions are made without regard to race, color, religion, national origin, gender, sexual orientation, gender identity, age, disability, genetic factors, military or veteran status, or any other protected characteristic. E‑Verify is required.