← Back to jobs

Senior Embedded Software Engineer I - Spacecraft
Posted 3 months ago• Software
Compensation
$120,000–$160,500/year
Job Description
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, asylee 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 CesiumAstro, 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, CesiumAstro 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 Senior Flight Software Engineer I to our Internal Missions team. If you enjoy working in a startup environment and are passionate about developing software for leading-edge communications satellites, we would like to hear from you.
In this position, you will be responsible for the CesiumAstro satellite flight software and software-in-the-loop testing through all stages of the development process. Your work will include developing software to monitor, test, and control spacecraft subsystems such as attitude, command and data handling, navigation, thermal, and power. The ideal candidate will be an experienced spacecraft software engineer, motivated to develop every aspect of space mission software from Linux-based satellite operating systems to low-level embedded products. You will work and learn from a cohort of senior and principal software engineers. You will use your experience to direct, mentor, and grow a team of motivated spacecraft engineers in the development of a new satellite system.
As a CesiumAstro team member, you will work on a small team to develop satellites and put them in orbit. You will be responsible for software design to include initial architecture and block diagrams, requirements definition, implementation, code review, and validation and verification. You will need to identify simplifying solutions to simulate complex problems and explain key results and decisions to the team.
JOB DUTIES AND RESPONSIBILITIES
JOB REQUIREMENTS AND MINIMUM QUALIFICATIONS
PREFERRED EXPERIENCE
CesiumAstro 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.
CesiumAstro 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: CesiumAstro does not accept unsolicited resumes from contract agencies or search firms. Any unsolicited resumes submitted to our website or to CesiumAstro team members will be considered property of CesiumAstro, and we will not be obligated to pay any referral fees.
Optimize Your Resume for This Job
Get a match score and see exactly which keywords you're missing
Job Details
- Category
- Software
- Employment Type
- Contract
- Location
- Westminster, CO
- Posted
- Jan 14, 2026, 12:37 PM
- Listed
- Jan 20, 2026, 02:25 AM
- Last updated
- Apr 15, 2026, 05:10 PM
- Compensation
- $120,000 - $160,500 per year
About CesiumAstro
Part of the growing space & AI ecosystem pushing the frontiers of technology.
More Roles at CesiumAstro

CesiumAstro
Manufacturing
Material Program Manager
Westminster, CO$102K - $136K Contract
17 hours ago
Manufacturing
17 hours ago
CesiumAstro
Software
Senior Software Engineer – Test Automation & Infrastructure
Austin, TX Contract
3 days ago
Software
3 days ago
CesiumAstro
Electrical
Senior RF Test Engineer II
Austin, TX Contract
3 days ago
Electrical
3 days ago
CesiumAstro
Electrical
RF Test Engineer II
Austin, TX Contract
3 days ago
Electrical
3 days ago
CesiumAstro
Electrical
Senior RF Test Engineer I
Austin, TX Contract
3 days ago
Electrical
3 days agoSimilar Software Roles

Instacart
RemoteSoftware
Senior Software Engineer II, (ML/AI Platform)
United States - Remote$230K - $242K Full Time
Just now
RemoteSoftware
Just now
Apptronik
Software
Full-Stack Software Lead - Fleet Connect
Austin, TX Full Time
8 minutes ago
Software
8 minutes ago
Anthropic
Software
Staff Software Engineer, Systems
London, GB£240K - £325K Full Time
8 minutes ago
Software
8 minutes agoFound this role interesting?
Senior Embedded Software Engineer I - Spacecraft
CesiumAstro