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Guidance Navigation and Controls Engineer; Early Career

Job in El Segundo, Los Angeles County, California, 90245, USA
Listing for: Millennium Space Systems
Full Time position
Listed on 2026-01-12
Job specializations:
  • Engineering
    Systems Engineer, Aerospace / Aviation / Avionics, Electrical Engineering
Salary/Wage Range or Industry Benchmark: 88400 - 130000 USD Yearly USD 88400.00 130000.00 YEAR
Job Description & How to Apply Below
Position: Guidance Navigation and Controls Engineer (Early Career)

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

The Guidance, Navigation, and Controls (GNC) Team delivers the GNC subsystem for a program and/or constellation. This includes subsystem/system level analysis to ensure requirements compliance, sensor and actuator selection, and Flight Control Software (FCSW) development and validation. Engineers in the GNC group are integral throughout the entire program lifecycle, providing mission and system design inputs, critical analysis products, software/algorithm development, support to satellite integration and test (I&T), and on-console support for on-orbit operations.

As a GNC engineer at Millennium, you will support one or more of our programs in developing and verifying the GNC subsystem. Engineers on this team possess strong fundamentals in control theory, MATLAB/Simulink, rotational and translation dynamics, and spacecraft GNC hardware. Our engineers demonstrate initiative in working through technical issues, and collaborate with the senior members of the team to ensure quality.

This position’s internal job code is Guidance, Nav & Controls Engr. Our team is currently hiring for Levels 1-2.

Responsibilities
  • Deliver the GNC subsystem (hardware, software, and analysis) for a satellite program
  • Perform GNC subsystem design, analysis, software development, and component selection to meet program requirements
  • Support the development of GNC products
  • Interface with other satellite subsystems as well as mission/systems engineering and program management to ensure system-level performance
  • Collaborate with a team of GNC engineers in support of a program, including decomposition and delegation of tasks
Minimum Qualifications
  • Bachelor's degree in engineering or a related technical discipline
  • Strong GNC fundamentals and spacecraft system level knowledge
  • Ability to perform complex GNC system analyses of kinematics, dynamics, and control systems using existing and/or self-developed tools
  • Ability to work independently to complete tasks
  • Ability to support activities (e.g. integration and test, mission operations) during off-nominal hours when required
  • This position requires the ability to obtain a U.S. Security Clearance for which the U.S. Government requires U.S. Citizenship.
Preferred Qualifications
  • Master's degree in engineering or a related technical discipline
  • Experience with spacecraft GNC design/analysis/test
  • Experience with spacecraft GNC sensors and actuators (e.g. star trackers, rate/accel/magnetic field measurement devices, momentum exchange devices, etc.)
  • System level software integration and test experience
  • Satellite integration and test and on-orbit operations experience
  • Strong understanding of classical and modern control theory, system-level trade studies, architecture development, and systems integration & analysis
  • 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: $74,800 - $110,000
  • Level 2: $88,400 - $130,000
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.

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