Demo

Astrodynamics Engineer (Mid-Career)

millenniumspacesystems
El Segundo, CA Full Time
POSTED ON 11/15/2025
AVAILABLE BEFORE 1/14/2026

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
The Astrodynamics Team is responsible for conducting a range of modeling, simulation, and analyses in areas such as space mission design, trajectory design, orbital maneuvers, orbit estimation, space debris collision and avoidance analyses, and space domain awareness.  Engineers in the Astrodynamics group are integral throughout the entire program lifecycle, providing mission design inputs, maneuver plans to meet mission objectives, as well as console support for on-orbit operations. They are directly responsible for determining the necessary capability of the satellite’s propulsion system and successfully maneuvering vehicles during flight operations.  They oversee the orbital Concept-of-Operations (CONOPS) from inception to on-orbit operations, and through to end-of-life disposal. 

As an Astrodynamics Engineer, you will be the Responsible Engineering Authority (REA) for the Astrodynamics subsystem for a given program, study, or proposal.  In addition to execution of technical design, analysis, and operation, you may be responsible for project and technical management activities to support programs, ensuring that high-quality work products are delivered on-time.

In addition to your engineering responsibilities, as an experienced member of the team you will be expected to set the engineering standard for the Astro team.  You will define methods, tools, and processes to follow, and you will be accountable for the quality of the work coming from the group at large.  You will be expected to mentor other members of the team and develop the next generation of Astrodynamics engineering talent.

This position’s internal job code is Guidance, Nav & Controls Engr. Our team is currently hiring for levels 3-4.

Responsibilities

  • Build, refine, deploy, and maintain astrodynamics tools to perform astrodynamics and orbit analyses
  • Determine and derive astrodynamics requirements to perform customer missions
  • Optimize spacecraft trajectories based on fuel, time, and/or performance characteristics
  • Develop tools and procedures for spacecraft mission execution
  • Perform station-keeping operations on orbiting satellites
  • Provide mentorship, guidance, and assurance of engineering quality for the team

Minimum Qualifications

  • Bachelor of Science degree in aerospace engineering, or other related technical or engineering discipline
  • 5 years experience in aerospace systems design, analysis, and/or operation
  • Experience in orbital mechanics, mission design, and state estimation
  • Experience with scientific computing software (e.g. MATLAB, Python, C ) and orbit design and simulation tools (e.g. GMAT, STK, etc.)
  • Familiarity with Rendezvous and Proximity Operations (RPO)
  • Technical leadership experience, including requirements generation, delegation and management of technical tasks, and responsible engineering authority (REA) experience
  • This position requires the ability to obtain a U.S. Security Clearance for which the U.S. Government requires U.S. Citizenship. 

Preferred Qualifications

  • MS in astrodynamics, aerospace engineering, or other related technical or engineering discipline
  • 8 years industry experience in relevant roles
  • Experience with rendezvous and proximity operations and/or formation flight
  • Experience with orbit determination and parameter estimation techniques (Batch and Sequential Estimation, Angles Only, Range Measurements, etc.)
  • Experience with on-orbit operations
  • Specialization in advanced orbital mechanics topics (e.g., trajectory optimization, relative motion maneuvering, orbit determination techniques, etc.)
  • Possess 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 3: $108,800 - $160,000
  • Level 4: $135,150 - $198,750

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 : $108,800 - $160,000

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