ATLO; Assembly, Test Launch Operations Engineer
Listed on 2026-06-03
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Engineering
Aerospace / Aviation / Avionics, Electrical Engineering
ATLO (Assembly, Test, & Launch Operations) Engineer - Millennium Space Systems
Company:
Millennium Space SystemsMillennium 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.
We are seeking highly motivated applicants to join our world-class team and help create the future of affordable, high-reliability space systems. We are looking for candidates who have demonstrated practical problem-solving experience in their previous roles or projects. This is a full-time position in El Segundo, CA.
Job Summary:
A member of the ATLO (Assembly, Test, and Launch Operations) team is responsible for building and testing complex spacecraft for a variety of mission areas, via electrical, mechanical assembly, environmental, and planning applications. You will play a critical role in developing satellites for manufacturability and large-scale constellations. An Early Career ATLO engineer will report directly to an Engineering Team Lead as a part of the Production organization at Millennium.
This position requires employees to work various shifts on a rotating basis. The shift times are subject to change and additional shifts may be added in accordance with company needs, but employees will only work one shift per day.
Each standard shift is 9.5 hours in length, 0.5 hours of which is designated for a lunch break. Shifts contain 9 hours of work to follow the Millennium 9/80 calendar, meaning every other Friday is a non-working day. The standard shift times are listed below.
First Shift: 0600 – 1530
Second Shift: 1430 – 0000
This position's internal job code is Systems Engineer. Our team is hiring for levels 1-2.
Position Responsibilities:
Conduct electrical verification of spacecraft subsystems using a variety of standard test equipment
Work with other teams to mechanically integrate satellite components into complex assemblies in a continuously evolving production environment
Generate and maintain version-controlled test scripts for automated spacecraft testing
Author test procedures and plans across common satellite subsystems from engineering drawings, schematics, and ICDs
Validate requirements through stringent V&V process on both prototype and flight build's
Interface with technicians, quality inspectors, and engineers in a cleanroom
Contribute to environmental testing campaigns (EMI/C, Dynamics, TVAC) as a test conductor
Document, analyze, and provide resolution for non-conformances and implement corrective actions
Basic Qualifications (Required Skills/Experience):
Completed bachelor’s degree in in the following fields:
Aerospace Engineering, Electrical Engineering, Mechanical Engineering, Computer Engineering, Physics, Math or similar. Graduate degree programs also acceptedExperience with the build, assembly, or testing of complex systems
Ability to read engineering drawings, technical documents, and schematics
This position requires the ability to obtain a U.S. Security Clearance for which the U.S. Government requires U.S. Citizenship. A U.S. Security Clearance Post-Start is required
Preferred Qualifications (Desired Skills/Experience):
For Electrical or Aerospace background:
Strong knowledge of electrical engineering circuit design principles, grounding, radio, test equipment, ESD, or spacecraft subsystemsFor Mechanical Engineering background:
Strong knowledge of mechanical assemblies, manufacturing processes, or industry standardsMust be willing to work in a small team, fast-paced environment
Ability to make sound engineering judgements with limited information
Experience with version control, understanding of basic software concepts, python, C++, linux environments, and computer network architecture
Willingness to work different shifts, travel to launch site/integration locations, and to support…
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