Guidance, Navigation & Controls Engineer - Millennium Space Systems

Company: Boeing
Location: El Segundo
Posted on: April 1, 2026

Job Description:

Guidance, Navigation & Controls Engineer - Millennium Space Systems Company: Millennium Space Systems 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 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. The Guidance, Navigation, and Controls (GNC) Engineer is the Responsible Engineering Authority (REA) for delivery of 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 REA at the Lead/Senior level, you will be the leader for the GNC subsystem for a given program/constellation. In addition to technical execution, it is critically important that engineers in this position are capable of management of a complex project, ensuring that high-quality work products are delivered on-time. This requires working familiarity with project management techniques, as well as an ability to identify, track, and mitigate subsystem risks in order to meet program execution objectives?. This position’s internal job code is Guidance, Nav & Controls Engr . Our team is currently hiring for level 4. 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 Manage the development of GNC products within the constraints of program cost and schedule Report technical execution progress to program and company leadership, and track/mitigate risk Interface with other satellite subsystems as well as systems engineering and program management to ensure system-level performance Technical leadership of a team of GNC engineers in support of a program, including decomposition and delegation of tasks Security Clearance and Export Control Requirements: This position requires the ability to obtain a U.S. Security Clearance. for which the US Government requires U.S. Citizenship. A final U.S. Top Secret security clearance is required post start. Basic Qualifications (Required Skills / Experience): Bachelor's degree in engineering or a related technical discipline and 5 years of industry experience 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 decompose large/complex/nebulous tasks into clearly defined subsets of work that can be done personally or delegated to other members of the team Ability to lead a small team of GNC engineers and collaborate with other subsystem engineers and program leadership 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): 10 years industry experience with spacecraft GNC system design Satellite I&T and on-orbit operations experience Strong fundamentals of project management, including monitoring cost and schedule performance Ability to set direction of program work and create processes and standards to support the group Advanced understanding of classical and modern control theory, system-level trade studies, architecture development, and systems integration & analysis Active TS/SCI clearance History of working independently to root cause discrepancies during spacecraft integration and test 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. 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 Summary Pay Range: Level 4: $135,150 - $198,750 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. Language Requirements: Not Applicable Education: Not Applicable Relocation: Relocation assistance is not a negotiable benefit for this position. Export Control Requirement: 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. Safety Sensitive: This is not a Safety Sensitive Position. Security Clearance: This position requires the 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. Top Secret/SCI Clearance Post-Start is required. Visa Sponsorship: Employer will not sponsor applicants for employment visa status. Contingent Upon Award Program This position is not contingent upon program award Shift: Shift 1 (United States of America) Stay safe from recruitment fraud! The only way to apply for a position at Boeing is via our Careers website. Learn how to protect yourself from recruitment fraud - Recruitment Fraud Warning 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. EEO is the law Boeing EEO Policy Request an Accommodation Applicant Privacy Boeing Participates in E – Verify E-Verify (English) E-Verify (Spanish) Right to Work Statement Right to Work (English) Right to Work (Spanish)

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