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Guidance Navigation and Controls Engineer (Early Career) - Millennium Space Systems

Los Angeles, California; El Segundo, California Job ID JR2026489953 Category Engineering - Flight Role Type Onsite Post Date Jan. 02, 2026
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Job Description

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Guidance Navigation and Controls Engineer (Early Career) – Millennium Space Systems

Millennium Space Systems (MSS), a part of Boeing Defense, Space and Security (BDS) is seeking a Guidance Navigation and Controls Engineer (Early Career) to support the Engineering team in El Segundo, CA!

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.

Position 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

  • Other duties as assigned

This position is expected to be 100% onsite. The selected candidate will be required to work onsite at one of the listed location options. 

Security Clearance and Export Control Requirements

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.

Basic Qualifications (Required Skills/Experience):

  • 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 (Desired Skills/Experience):

  • 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

Conflict of Interest:

Successful candidates for this job must satisfy the Company’s Conflict of Interest (COI) assessment process

Drug Free Workplace:

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.

Shift:

  • This role will be on 1st

Total Rewards:

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 1: $74,800 - $110,000

  • Level 2: $88,400 - $130,000


Applications for this position will be accepted until Feb. 09, 2026


Export Control Requirements:

This position must meet U.S. export control compliance requirements. To meet U.S. export control compliance requirements, a “U.S. Person” as defined by 22 C.F.R. §120.62 is required. “U.S. Person” includes U.S. Citizen, U.S. National, lawful permanent resident, refugee, or asylee.

Export Control Details:

US based job, US Person required

Education

Bachelor's Degree or Equivalent Required

Relocation

Relocation assistance is not a negotiable benefit for this position.

Visa Sponsorship

Employer will not sponsor applicants for employment visa status.

Shift

This position is for 1st shift


Equal Opportunity Employer:

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.

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No matter where you are in life, our benefits help prepare you for the present and the future.

  • Generous company match to your 401(k).
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These programs are subject to eligibility requirements and other conditions, which may differ for employees of certain subsidiaries or business units, or union-represented employees depending on bargaining agreement terms. If this information conflicts with the program documents, the latter shall control. This material is informational only.

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