← Back to jobs

Principal Embedded Software Engineer I
Posted 2 hours ago• Software
Job Description
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.
In this position, you will be responsible for low-level and high-level software in Cesium’s products through all phases of the development process. Key projects will include Linux-based single-board computers and high-reliability microcontroller systems. Cesium’s goal is to create an out-of-the-box hardware and software experience which enhances our customers’ ability to rapidly integrate our products into their systems.
As a Cesium software team member, you will be responsible for software designs from concept through production, including product roadmaps, block diagrams, detailed design and coding, analysis, test, qualification, and in-orbit support. The ideal candidate will have development experience at nearly every level of the software stack, including microcontrollers, low-level drivers, board support packages (BSP), end-use applications, and user interfaces. Additionally, the ideal candidate will have experience in software testing and high-reliability qualification, as well as software engineering and software project management practices.
The successful candidate will present engineering design review materials to our customers and executive team, as well as participate in proposal-writing efforts. As such, excellent written and verbal communication skills are required.
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.
Please be aware that many roles will be subject to both security and export control restrictions. These restrictions mean that factors including new starter’s nationality, any previous or dual nationalities held, place of birth and country of residence may limit those roles that you can perform for the organisation.
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 not through our approved vendor list or Talent Acquisition 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
Ready to Apply?
This will take you to CesiumAstro's application page
Job Details
- Category
- Software
- Employment Type
- Contract
- Location
- Milton Keynes, United Kingdom
- Posted
- Mar 5, 2026, 12:31 PM
- Listed
- Mar 5, 2026, 01:10 PM
About CesiumAstro
Part of the growing space industry ecosystem pushing humanity toward interplanetary exploration.
More Roles at CesiumAstro

CesiumAstro
Aerospace Engineering
Senior Test Engineer I - Spacecraft
Westminster, CO $120K - $160K Contract
1 day ago
Aerospace Engineering
1 day ago
CesiumAstro
Business & Finance
Strategy Analyst
Austin, TX Contract
1 day ago
Business & Finance
1 day ago
CesiumAstro
Software
Senior Embedded Software Engineer I
Westminster, CO $133K - $161K Contract
1 day ago
Software
1 day ago
CesiumAstro
Software
Senior Electronics Test Engineer II - Automation & Test
Westminster, CO $134K - $161K/hour Contract
2 days ago
Software
2 days ago
CesiumAstro
Electrical
Principal Electronics Test Technician
Westminster, CO $46 - $55.5/hour Contract
2 days ago
Electrical
2 days agoSimilar Software Roles

Astranis
Software
Senior Backend Software Engineer, Enterprise Systems
San Francisco, CA $150K - $200K Full Time
53 minutes ago
Software
53 minutes ago
SpaceX
StarshieldClearanceSoftware
Software Engineer, HITL - Top Secret Clearance
Hawthorne, CA $125K - $145K Full Time
1 hour ago
StarshieldClearanceSoftware
1 hour ago
SpaceX
StarlinkSoftware
Automation & Controls Specialist, Silicon Process Manufacturing (Starlink)
Bastrop, TX Full Time
1 hour ago
StarlinkSoftware
1 hour agoFound this role interesting?