Guidance, Navigation Control; GNC Engineer II

Please Note: To conform with the United States Government Space Technology Export Regulations, the applicant must be a U.S. citizen, lawful permanent resident of the U.S., conditional resident, asylum seeker or refugee (protected individuals as defined by 8 U.S.C. 1324b(a)(3)), or eligible to obtain the required authorizations from the U.S. Department of State.

At Cesium Astro, we are developers and pioneers of out-of-the-box communication systems for satellites, UAVs, launch vehicles, and other space and airborne platforms. We take pride in our dynamic and cross-functional work environment, which allows us to learn, develop, and engage across our organization. If you are looking for hands‑on, interactive, and autonomous work, Cesium Astro is the place for you.

We are actively seeking passionate, collaborative, energetic, and forward‑thinking individuals to join our team.

We are looking to add a GNC Engineer II to our team. If you enjoy working in a startup environment and are passionate about developing systems for leading‑edge spacecraft, and aerospace communication systems, we would like to hear from you.

In this position, you will work on a small team in the design and analysis of GNC systems for Cesium Astro satellites and payloads. You will be responsible for Guidance, Navigation, and Control through all stages of design, integration, test, and operations. As such, you will perform trade studies, participate in design reviews, create models, and complete simulations and system testing.

You will build, test, and fly hardware.

As a Cesium Astro spacecraft team member, you will work on a small team to develop satellites and put them in orbit. Being in a startup, you can expect significant portions of your time to be spent contributing to company‑critical projects outside your area of expertise.

• Master of Science (MS), or Doctorate (Ph.D.) degree in Aerospace Engineering from an accredited university or institution
• 2 years of internship, research, or industry experience in satellite attitude and orbit systems
• Expertise in attitude estimation, guidance, and control; coordinate frame transformations; linear algebra; and non‑linear systems
• Experience with multiple spaceflight missions from concept to operations
• Experience in low earth orbit satellites
• Experience with post‑CDR test failures and on‑orbit failures that guide your design and test philosophies
• Experience with successful and unsuccessful recovery from on‑orbit failures
• Experience in conceptualization, architecture design, requirements specification, design, test, and operations of various GNC architectures and components
• Familiarity with space mission simulation tools such as STK, Basilisk, GMAT, or Free Flyer
• Experience defining spacecraft trajectories and orbital requirements
• Fluency with Python and C++, or other modeling languages
• Familiarity with spacecraft mission design including events, pointing modes, maneuver planning, and operations
• Excellent written and verbal communication skills

• Cube Sat and Small Sat experience
• Hands‑on experience with spacecraft instrumentation, subsystems, and test labs
• Experience with multiple mission simulation and flight architectures which drives your vision for the next generation of space software
• Experience in LEO, MEO, GEO, and deep space satellites
• Experience with communications satellites

$113,000 - $136,400 a year

Cesium Astro considers several factors when extending an offer, including but not limited to, the role and associated responsibilities, a candidate’s work experience, education/training, and key skills. Full‑time employment offers include company stock options and a generous benefits package including health, dental, vision, HSA, FSA, life, disability and retirement plans.

Cesium Astro is an Equal Opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability, protected Veteran Status, or any other characteristic protected by applicable federal, state, or local law.

Please note:

Cesium Astro does not accept unsolicited resumes from contract agencies or search firms. Any unsolicited resumes submitted to our website or to Cesium Astro team members will be considered property of Cesium Astro, and we will not be obligated to pay any referral fees.