Why Castelion, Why Now
Castelion is moving incredibly fast to develop and deliver advanced defense systems at a time when execution matters more than ever. We believe focus, ownership, and excellence are decisive advantages - and we're building a world-class team to turn bold ideas into real capability.
This is a rare opportunity to join at an early stage, where you'll have significant ownership, collaborate with exceptional teammates, and make a direct, measurable impact on our mission and the future of the company - regardless of your function.
Senior Radar Algorithm Engineer
As a Senior Radar Algorithm Engineer, you will develop and deploy advanced algorithms for air-to-air radar systems operating in contested, modern electronic warfare environments. This role goes beyond theory - you will own the full lifecycle from algorithm design through production-ready implementation, validation, and integration into real hardware systems.
Responsibilities
- Own end-to-end development of air-to-air radar algorithms—from concept through production—ensuring performance, affordability, testability, and scalability
- Design, implement, and validate radar mode logic in Python or Rust, delivering robust performance in modern electronic warfare environments
- Develop and execute verification and validation plans across simulation, chamber testing, captive flight, and live-fire scenarios, including calibration considerations
- Operate within a disciplined software engineering environment, leveraging version control, code reviews, CI/CD, and testing frameworks
Basic Qualifications
- Bachelor's or Master's degree in Electrical Engineering, Computer Science, Physics, or a related technical field
- Direct experience with air-to-air radar systems and associated algorithms
- Strong background in signal processing, detection, tracking, and radar modes
- Proficiency in Python and/or Rust, with experience writing production-quality code
- Ability to operate in a disciplined software engineering environment (e.g., Git, code reviews, testing, issue tracking tools like Jira)
Preferred Skills and Experience
- Experience working in electronic warfare or contested RF environments
- Background in taking algorithms from concept through deployment on hardware systems
- Familiarity with radar system calibration, integration, and test across multiple environments
- Experience building scalable, maintainable software architectures for real-time systems
Castelion offers a generous benefits package. Please refer to the bottom of our Careers page for more details.
Other Duties
Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee for this job. Duties, responsibilities and activities may change at any time with or without notice.
Additional Eligibility Requirements
This position may require access to classified information or restricted U.S. Government sites, systems, or information, as determined by the Company and/or applicable U.S. Government requirements. If the position is so designated, your employment in the role may be contingent upon your ability to obtain and maintain the required U.S. Government security clearance or other government authorization, and to satisfy any citizenship or other eligibility requirements imposed by applicable law, regulation, executive order, or government contract requirements. You will be notified if and when such requirements apply.
Affirmative Action/EEO Statement
Castelion is an Equal Opportunity Employer. We are committed to providing equal employment opportunities to all applicants and employees without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, genetic information, protected veteran status, or any other characteristic protected by applicable federal, state, or local law.
Castelion is committed to providing reasonable accommodations to qualified individuals with disabilities throughout the application and hiring process. If you require a reasonable accommodation to complete an application, participate in the interview process, or otherwise participate in the hiring process, please contact [email protected]. Requests for accommodation will be considered on an individual basis and handled in accordance with applicable law.
Castelion is committed to fostering a workplace where employment decisions are based on qualifications, business needs, and the ability to perform the essential functions of the role, with or without reasonable accommodation.
EAR/ITAR Requirements
This position requires access to export-controlled information, and as such, employment (or hiring of a contractor) is contingent upon the candidate’s ability to access all applicable export-controlled information without additional export licensing being required by the Bureau of Industry and Security and/or the Directorate of Defense Trade Controls.