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Salary
≈ $73k – $140k per year (Estimated)
Location
In office (Cedar Park)
Seniority
Middle · 4+ years exp
Employment
Full-Time

Confirmed on the employer's own hiring board on Oct 22, 2026. First seen by Alion on Oct 20, 2026.

Overview
Company
Impact
Profile match
Firefly Aerospace is an American space and defense technology company specializing in the development of small- to medium-lift launch vehicles, lunar landers, and orbital transfer vehicles. Headquartered in Cedar Park, Texas, the company provides rapid and reliable space access through its Alpha rocket, upcoming Eclipse launch systems, Blue Ghost lunar landers, and Elytra orbital vehicles. By combining advanced in-house manufacturing, rapid iteration, and cost-effective modular technologies, it delivers end-to-end mission services supporting commercial satellite deployment, scientific lunar exploration, and national security operations across cislunar space.

ABOUT FIREFLY AEROSPACE

Firefly Aerospace is a space and defense technology company that enables our world to launch, land, and operate in space - anywhere, anytime. As the partner of choice for critical space missions, Firefly is the only commercial company to launch a satellite to orbit with 24-hour notice and the only company to achieve a successful Moon landing. Our launch vehicles, lunar landers, and orbital vehicles provide government and commercial customers with full mission services from low Earth orbit to the Moon and beyond. Headquartered in north Austin, Texas, Firefly is looking for passionate, hardworking innovators to join our team and help fuel our successful trajectory into space.

SUMMARY

A Firefly Radiation Engineer is responsible for characterizing, simulating, and mitigating the radiation environmental effects observed by our spacecraft. This person will be involved in all phases of spacecraft and hardware development. A qualified candidate will be capable of both defining the environment as well as running multi-disciplinary test campaigns to qualify COTS parts for spaceflight.

RESPONSIBILITIES

  • Define radiation environment for missions
  • Work alongside the hardware design team in parts selection/derating
  • Organize and run test campaigns for Proton, Heavy Ion, and TID
  • Calculate mission probability of success based on test results
  • Work with stakeholders to manage programmatic risk

QUALIFICATIONS

Required

  • BS degree in STEM (Science, Technology, Engineering, Mathematics), in lieu of a degree an additional 4 years of direct experience can be considered.
  • 3 yrs minimum experience with design, analysis, and/or testing of radiation effects on electronics and materials
  • Knowledge of fundamental statistical methods and probability calculations
  • Familiarity with discrete and integrated circuits (transistors, logic, memory, microcontrollers, FPGAs, etc.)
  • Experience with industry-standard radiation effects analyses and testing (environment definition, SEECA, TID, DDD, etc.)
  • Ability to read electrical schematics and design basic PCBs for testing purposes

Desired

  • Experience with Altium Designer
  • Experience with Atlassian tools such as Jira/Confluence and Agile methodology
  • Experience with radiation simulation tools such as FASTRAD, SPENVIS, etc.

Firefly offers outstanding benefits for our employees, including generous health, dental and vision plans with low plan deductibles, parental leave, relocation benefits, educational reimbursement, short term disability, and flexible PTO options.

To conform to U.S. Government space technology export regulations, including the International Traffic in Arms Regulations (ITAR) you must be a U.S. citizen, lawful permanent resident of the U.S., protected individual as defined by 8 U.S.C. 1324b(a)(3), or eligible to obtain the required authorizations from the U.S. Department of State.

Firefly Aerospace, Inc. is an Equal Opportunity Employer; employment with Firefly is governed based on merit, competence and qualifications and will not be influenced in any manner by race, color, religion, gender, national origin/ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability or any other legally protected status.

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