Senior Radiation Effects Engineer

CesiumAstro, Inc.; Denver (CO); On-site; USD 133,000 - 161,000; Full time

Benefits offered by this job

Stock options

Health, dental, vision insurance

Job summary

CesiumAstro is seeking a Senior Radiation Effects Engineer to lead our radiation hardness assurance program for LEO and beyond. You will simulate environments, plan tests, and advise hardware and software teams on radiation-tolerant design while participating in system-level risk analyses and customer-facing documentation.

The role requires 5+ years in space product environments, experience with high-volume parts in radiation settings, and strong communication skills for proposals and executive

Qualifications

• Bachelor degree in EE or Physics; space product experience preferred.
• Direct experience performing most responsibilities listed.
• Experience with radiation environments for space hardware and high-volume parts.

Responsibilities

• Own Radiation Hardness Assurance for LEO and beyond; simulate environments.
• Plan and conduct proton, heavy ion and total-dose tests on components and CesiumAstro products.
• Advise hardware on part selection and software/firmware on radiation-tolerant practices; participate in design reviews.

Skills

Radiation effects

Space hardware experience

Software radiation tolerance

Python scripting

Design reviews and risk analysis

Education

BS in Electrical Engineering or Physics

Tools

FASTRAD

OMERE

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 Radiation Effects Engineer to our team. If you enjoy working in a startup environment and are passionate about developing the next generation of space systems, we would like to hear from you.

In this position, you will be responsible for key aspects of the company’s radiation hardness assurance program. CesiumAstro’s products address market segments that include high‑volume LEO applications as well as higher orbits; as such, the successful candidate will have extensive industry experience using modern, cutting‑edge devices in space applications. Technical work will include environment analysis, testing, risk management, and product road‑mapping. More detailed responsibilities are listed below.

The successful candidate will also 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

• Own key aspects of the company’s Radiation Hardness Assurance Plan for LEO orbits and beyond.
• Simulate radiation environments for various orbits using tools such as OMERE.
• Plan and conduct radiation tests on components and CesiumAstro’s products, including proton, heavy ion, and total dose testing.
• Predict upset rates by combining environmental simulations with test data.
• Advise hardware engineers on part selection.
• Advise software and firmware engineers on best practices for “software radiation tolerance” such as EDAC and watchdog timer.
• Perform system-level analysis of radiation risk.
• Participate in design reviews for hardware, software, and firmware to ensure radiation reliability.
• Digest requirements from potential customers to shape our product-level radiation roadmap.
• Keep up with the latest industry practices, standards, and requirements.
• Help to grow the radiation effects team via interviews, training, and mentorship.
• Advise Business Development on radiation effects for bids and proposals.

Job Requirements And Minimum Qualifications

• Bachelor of Science (BS) or higher degree in Electrical Engineering, Physics, or similar degree from an accredited university.
• Minimum of 5 years of space product experience.
• Direct experience performing many or all of the responsibilities listed above.
• Direct experience working with automotive and high volume commercial grade parts in radiation environments.
• Good understanding of the radiation physics relevant to electronic components.
• Excellent written and spoken communication ability.

Preferred Experience

• Experience with ray tracing tools such as FASTRAD
• Experience with radiation susceptibility of RF components including III‑V transistors (GaAs, Gan)
• Specialization of SEE analysis and test of complex digital devices such as FPGAs, processors, and memories (RAM and NVM)
• Working knowledge of Electronic Circuit Theory.
• Basic programming and scripting, such as Python.
• Managing databases of component test data.

$133,000 - $161,000 a year

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.

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.