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Salary
≈ $62k – $112k per year (Estimated)
Location
In office (Milton Keynes)
Seniority
Senior · 4+ years exp
Employment
Full-Time

Confirmed on the employer's own hiring board on Nov 2, 2026. First seen by Alion on Aug 17, 2026. CesiumAstro scores B on the Alion truth index.

Overview
Company
Impact
Profile match
CesiumAstro is an American company founded in Austin in 2017 that builds active phased array communications payloads for satellites, aircraft and defence platforms. Its systems are software-defined and electronically steered, which lets a moving platform track several links at once without mechanical antennas, and the company manufactures them in house rather than integrating third-party subsystems. It sells mainly to defence customers and satellite operators, has raised venture funding from investors including Airbus Ventures and Lightspeed, and operates facilities in Austin, Colorado and the United Kingdom.

In this position, you will be responsible for low-level and high-level software in CesiumAstro’s products through all phases of the development process. Key projects will include Linux-based single-board computers and high-reliability microcontroller systems. CesiumAstro’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 CesiumAstro 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

  • Designing and implementing software for embedded devices and systems, from requirements to production and commercial deployment.
  • Designing, developing, coding, testing, debugging, and documenting system software.
  • Reviewing code and system designs.
  • Analyzing code for efficiency, stability, and scalability.
  • Integrating and validating new product designs.
  • Supporting software quality assurance and optimizing I/O performance.
  • Providing post-production/in-orbit customer support.
  • Interfacing with hardware design and development engineers.
  • Assessing third-party and open-source software.

JOB REQUIREMENTS AND MINIMUM QUALIFICATIONS

  • A Bachelor of Science (BS) or Master of Science (MS) degree in Computer Science, Electrical Engineering, or Computer Engineering.
  • 4+ years of industry experience in software development.
  • Experience in hands-on development and troubleshooting of embedded hardware. API design for interfacing with FPGAs.
  • Experience with products for aerospace applications.
  • Programming experience in C or C++.
  • Experience in embedded systems design with preemptive, multitasking real-time operating systems (experience with real-time Linux is desirable).
  • Familiarity with software configuration management tools, defect tracking tools, and peer review.
  • Excellent knowledge of real-time system coding techniques, IP protocols, interfaces, and hardware subsystems.
  • Excellent understanding of multi-threaded applications and resource management.
  • Excellent written and verbal communication skills.

PREFERRED EXPERIENCE

  • Adequate knowledge of reading electronics schematics and component data sheets.
  • Experience with ARM processors and fully-featured microcontrollers.
  • Experience in the design and development of a Software Development Kit (SDK).
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