Develop and lead flight software for satellite mission systems, including spacecraft subsystem monitoring, control, simulation, testing, validation, and in-orbit support. Responsibilities include software architecture, coding, code review, hardware integration, reliability engineering, fault detection and recovery, configuration management, and performance optimization. The role also mentors engineers and supports mission software across satellites, ground stations, and operations centers.
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 Staff Flight Software Engineer 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
- Design and implement software to build and integrate mission systems including satellites, ground stations, and mission operations centers.
- Design, develop, code, test, debug, and document system software.
- Review code and system designs.
- Analyze code for efficiency, stability, and scalability.
- Integrate and validate new product designs.
- Support software quality assurance and optimize I/O performance.
- Provide post-production/in-orbit customer support.
- Interface with hardware design and development engineers.
- Assess third party and open-source software.
JOB REQUIREMENTS AND MINIMUM QUALIFICATIONS
- Bachelor of Science (BS), Master of Science (MS), or Doctorate (PhD) degree in Software or Computer Engineering from an accredited university or institution.
- Minimum of 8 years of industry experience in spacecraft software development. A Master's degree may count as two years of experience.
- Experience in hands-on development and troubleshooting of software systems and hardware (such as motors, power distribution units, etc.).
- Experience with C, C++, Python, or other languages in an aerospace context.
- A strong understanding of space missions from conception through flight and disposal.
- Familiarity with spacecraft mission design including events, pointing modes, maneuver planning, sequencing, and operations.
- Experience with spacecraft failure in post-CDR testing and on-orbit, root cause analysis, and recovery.
- Experience with design for reliability, spaceflight redundancy, and fault detection, identification, and recovery.
- Space software experience with attitude dynamics, coordinate frame transformations, vector mathematics, radiative heat transfer, spacecraft propulsion, space communication systems, and power systems.
- Experience with communication protocols such as TCP/IP or UDP for use in software-in-the-loop and hardware-in-the-loop lab development and for use in space flight.
- Experience in interfacing a variety of open-source software to create an integrated system.
- Embedded software experience, particularly for space missions.
- Ability to implement physical first principles as scripts or spreadsheets.
- Experience with processes for software release, revisioning, and configuration.
- Familiarity with configuration management tools, defect tracking tools, and peer review.
- Experience with trades and processes for handling radiation tolerance in software on automotive grade parts.
- Familiarity with systems for continuous integration, test, and delivery.
- Excellent understanding of multi-threaded applications and resource management.
- Excellent written and verbal communication skills.
PREFERRED EXPERIENCE
- CubeSat and SmallSat experience including LEO, MEO, GEO, and beyond.
- Hands-on experience with spacecraft instrumentation, subsystems, and test labs.
- Experience with JPL F’, NASA cFS, and other commercial space software frameworks.
- Experience with ground system software engineering for space missions.
- Experience in a team leadership role on a space software program.
- Experience in other non-space safety critical software programs.
- Experience with network security.
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.
CesiumAstro Broomfield, Colorado, USA Office
105 Edgeview Drive, Broomfield, CO, United States, 80021
CesiumAstro Westminster, Colorado, USA Office
10355 Westmoor Dr., Suite 100, Westminster, United States, 80021
Similar Jobs
Aerospace • Artificial Intelligence • Hardware • Machine Learning • Software • Defense • Manufacturing
Develop and test flight software for spacecraft, including onboard computers, GNC algorithm integration, command and telemetry systems, spacecraft sequencing, subsystem simulators, device drivers, and communications libraries. Collaborate with ground software teams across spacecraft design, manufacturing, integration, and flight operations. The role requires low-level firmware, embedded RTOS, safety-critical systems, C/C++, Python, and eligibility for TS/SCI clearance.
Top Skills:
Azure RtosCC++CanEmbedded LinuxEthernetHitlI2CPythonRs422Rs485RtlinuxSitlSpiTcp/IpUdp
Marketing Tech • Social Media • Software • Analytics • Business Intelligence
Supports go-to-market systems for Sales, Marketing, Customer Success, Renewals, and Deal Desk. Translates business needs into requirements, user stories, and acceptance criteria; manages intake and prioritization; leads UAT, defect triage, releases, and field communications. Leads CPQ evaluation and roadmap support, improves marketing and pipeline attribution, monitors Salesforce data quality, and documents processes and definitions. Partners closely with Salesforce IT and uses AI tools to accelerate analysis, documentation, and testing.
Top Skills:
Ai ToolsGongSalesforceSalesforce CpqSOQL
Consumer Web • eCommerce • Internet of Things
Recruit and support hiring for full-time and contract roles, including contractor conversions. Partner with hiring managers, manage pipelines, maintain ATS data, and improve recruiting workflows through automation. Review and design scalable People Team, onboarding, approval, and offer processes while coordinating with People Experience, Legal, Finance, and Procurement. Advise leaders on timelines, tradeoffs, and risks in a fast-paced startup environment.
Top Skills:
Applicant Tracking System (Ats)Ats WorkflowsIntegrationsReporting DashboardsWorkflow Rules
What you need to know about the Colorado Tech Scene
With a business-friendly climate and research universities like CU Boulder and Colorado State, Colorado has made a name for itself as a startup ecosystem. The state boasts a skilled workforce and high quality of life thanks to its affordable housing, vibrant cultural scene and unparalleled opportunities for outdoor recreation. Colorado is also home to the National Renewable Energy Laboratory, helping cement its status as a hub for renewable energy innovation.
Key Facts About Colorado Tech
- Number of Tech Workers: 260,000; 8.5% of overall workforce (2024 CompTIA survey)
- Major Tech Employers: Lockheed Martin, Century Link, Comcast, BAE Systems, Level 3
- Key Industries: Software, artificial intelligence, aerospace, e-commerce, fintech, healthtech
- Funding Landscape: $4.9 billion in VC funding in 2024 (Pitchbook)
- Notable Investors: Access Venture Partners, Ridgeline Ventures, Techstars, Blackhorn Ventures
- Research Centers and Universities: Colorado School of Mines, University of Colorado Boulder, University of Denver, Colorado State University, Mesa Laboratory, Space Science Institute, National Center for Atmospheric Research, National Renewable Energy Laboratory, Gottlieb Institute
