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Software Engineer, GNC Simulations; Starlink

Job in Union Hill-Novelty Hill, King County, Washington, USA
Listing for: SpaceX
Full Time position
Listed on 2025-12-29
Job specializations:
  • Software Development
    Software Engineer
Job Description & How to Apply Below
Position: Software Engineer, GNC Simulations (Starlink)
Location: Union Hill-Novelty Hill

Space

X was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where we are not. Today Space

X is actively developing the technologies to make this possible, with the ultimate goal of enabling human life on Mars.

SOFTWARE ENGINEER, GNC SIMULATIONS (STARLINK)

As a Simulation Software Engineer on the Starlink GNC team, you will help develop and maintain our in‑house vehicle dynamics simulator, as well as related infrastructure for dispersed Monte Carlo simulations, hardware‑in‑the‑loop (HITL) simulations, and GNC‑specific data visualization. You will program the core simulation infrastructure and collaborate on the building of models to accurately represent multi‑body physics, environmental perturbations, and vehicle power/propulsion/control hardware.

This is a high impact role where you will work across the engineering groups to build high fidelity simulations used to develop cutting‑edge software and hardware. Space

X is looking for smart, motivated software engineers who enjoy taking on complex challenges, work well in dynamic environments and care about software best practices.

RESPONSIBILITIES
  • Maintain in‑house simulator as it pertains to Starlink and make continual improvements to help that system scale in performance and capability along with our constellation
  • Maintain and improve the Space

    X GNC Monte Carlo simulation infrastructure as it pertains to Starlink
  • Work with simulation software users to develop new features and models, and to improve user experience
  • Improve reliability and performance of simulation software via continuous integration, profiling, etc
BASIC QUALIFICATIONS
  • Bachelor's degree in computer science, engineering, math, or STEM discipline and 1+years of experience in software development; OR 3+ years of professional experience in software development in lieu of a degree
  • 2+ years development experience in C/C++
PREFERRED SKILLS AND EXPERIENCE
  • Strong proficiency in C++, python. front‑end skills (eg, js)
  • Strong software design and development skills
  • Thorough knowledge of physics and math
  • Strong skills in debugging, performance optimization and unit testing
  • Creative approach to problem solving
  • Ability to work effectively in a dynamic environment with changing needs and requirements
  • Ability to work independently and in a team, take initiative, and communicate effectively
ADDITIONAL REQUIREMENTS
  • Willing to work extended hours and weekends when needed
COMPENSATION AND BENEFITS

Pay range:

Software Engineer/Level I: $ - $/per year

Software Engineer/Level II: $ - $/per year

Your actual level and base salary will be determined on a case‑by‑case basis and may vary based on the following considerations: job‑related knowledge and skills, education, and experience.

Base salary is just one part of your total rewards package  may also be eligible for long‑term incentives, in the form of company stock, stock options, or long‑term cash awards, as well as potential discretionary bonuses and the ability to purchase additional stock at a discount through an Employee Stock Purchase Plan. The rewards package also includes access to comprehensive medical, vision, and dental coverage, a 401(k) retirement plan, short‑ and long‑term disability insurance, life insurance, paid parental leave, and various other discounts and perks.

You may accrue 3 weeks of paid vacation and be eligible for 10 or more paid holidays per year. Exempt employees are eligible for 5 days of sick leave per year.

ITAR REQUIREMENTS

To conform to U.S. Government export regulations, applicant must be a (i) U.S. citizen or national, (ii) U.S. lawful, permanent resident (aka green card holder), (iii) refugee under 8 U.S.C. * 1157, or (iv) asylee under 8 U.S.C. * 1158, or be eligible to obtain the required authorizations from the U.S. Department of State. Learn more about the ITAR here.

Space

X is an Equal Opportunity Employer; employment with Space

X is governed on the basis of merit, competence and qualifications and will not be influenced in any manner by race, color, religion, gender, national origin/ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability or any other legally protected status.

Applicants wishing to view a copy of Space

X's affirmative action plan for veterans and individuals with disabilities, or applicants requiring reasonable accommodation to the application/interview process should reach out to

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