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Spacecraft Mechanical Engineer (Early-Career)

millenniumspacesystems
El Segundo, CA Full Time
POSTED ON 12/9/2025
AVAILABLE BEFORE 2/9/2026

Company Overview
Millennium Space Systems, A Boeing Company delivers affordable, high-performance space systems for exacting customers. At Millennium, you will be part of a close-knit team working on exciting technological problems. We work in an open environment where ideas are shared across all disciplines, and there are ample opportunities for advancement based on excellence. Superstars are welcome.

At Millennium, we innovate and collaborate to make the world a better place. From the seabed to outer space, you can contribute to work that matters with a company committed to fostering an environment for every teammate that's welcoming, respectful and innovative, with great opportunities for professional growth. Find your future with us. 

Job Summary
As a Spacecraft Mechanical Engineer, you will be responsible for mechanical design and configuration of satellite structures. The parts and systems you may work on will range from spacecraft primary and secondary structure, to ground support equipment interfaces and integration accommodations, to pointing mechanisms and deployable structures. Your designs will ensure that our space vehicles survive their complete development and operational lifecycles, including prototyping, test, transport, launch, and long-term operations.

This position’s internal job code is Mech Sys Design & Anlys Engr. Our team is currently hiring for levels 1-2.

Responsibilities

  • Perform structural design and configuration tasks necessary to deliver high performance satellite systems
  • Perform first order layout and mass properties analyses
  • Support procurement of materials and components
  • Identify processes, tests, and manufacturing tools necessary to deliver a qualified spacecraft structure and components
  • Work to subsystem schedule and deliverables
  • Develop first-order structural models in support of mechanical design performance predictions
  • Support structural qualification testing on spacecraft systems and components including test design, test conduct, and interface equipment for unit under test
  • Document, analyze, and troubleshoot unexpected discrepancies in mechanical designs
  • Produce part and assembly drawings to facilitate Assembly, Test, and Launch Operations

Minimum Qualifications

  • Bachelor’s degree in Mechanical Engineering, Aerospace Engineering, or a related field
  • 1-5 years of experience with SolidWorks or equivalent 3D CAD package
  • 1-2 years of hands-on fabrication experience (personal hobby projects, classwork, or extracurricular design clubs included)
  • Familiarity with mechanical design of spacecraft, e.g. materials, environments, and manufacturing processes

Preferred Qualifications

  • 1-3 years of experience with mechanical design
  • Ability to design, develop, implement, and test structural systems and/or mechanism designs
  • Demonstrate clear communication and organizational skills
  • Active TS/SCI Clearance

Summary Pay-Range
Please note that the salary information shown below is a general guideline only of what is reasonably expected to be paid for the position. Salaries are based upon candidate experience and qualifications, as well as market and business considerations.

  • Level 1: $69,700 - $102,500
  • Level 2: $81,600 - $120,000

Before applying, please note:
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.

Applicant Privacy Policy
Mandatory Security Clearance and Access Process Disqualifying Criteria

Salary : $69,700 - $102,500

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