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Job #: R-00028429
Location: Houston, TX
Category: Research Scientist
Schedule (FT/PT): Full Time
Travel Required: Yes, 10% of the time
Shift: Day
Potential for Telework: No
Clearance Required: None
Referral Eligibility: Ineligible
Group: Civil

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Job Description:

The Space Radiation Analysis Group (SRAG) at NASA's Johnson Space Center is seeking expertise in understanding and assessing astronaut space radiation exposures and the associated biological effects and risks. The candidate must assess and quantify cancer risks associated with ionizing radiation and should have a comprehensive working knowledge of publications from BEIR, UNSCEAR, ICRP, and the NCRP dealing with human health risks associated with exposure to space radiation. 

Primary areas of expertise and responsibilities include:

Astronaut radiation risk analysis:

  • Manage and perform monthly astronaut radiation risk analyses 
  • Assess radiation dose for all astronaut medical radiation exposures
  • Provide medical physics expertise for research studies that involve radiation exposure
  • Apply radiation protection industry best practices for occupational and healthcare settings

Subject matter expert in space radiation health risks: 

  • Conduct reviews of radiation health outcome evidence including cancer, CNS, acute or degenerative effects with special attention to space radiation
  • Identify, critically review, synthesize, and present relevant multidisciplinary research highlighting the implications for radiation risk assessment
  • Support translation of research findings into evidence-based operational strategies
  • Curate and maintain established literature database for agency and partner team members

Space radiation outreach and communication:

  • Foster understanding of space radiation topics through oral, written, and multimedia presentation and communication
  • Design and supervise projects for Aerospace Medicine Resident Program

Responsible for compliance with Safety, Health and Environmental plan; must be committed to a high standard of safety and be willing and able to comply with all safety laws and all of the Company’s safety policies and rules and must be willing to report safety violations and potential safety violations to appropriate supervisory or management personnel.

  • Responsible for compliance with the Quality Assurance Plan, policies and procedures
  • Must maintain regular and acceptable attendance level as determined by the Company
  • Responsible for completing all assigned training
  • Astronaut radiation risk analysis
  • Subject matter expert in space radiation health risks 
  • Space radiation outreach and communication

Required Education and Skills:

  • Master’s degree from an accredited college in Radiation Biology, Radiation Epidemiology, or a related discipline, with 5 years of professional experience or equivalent experience/combined education; or 2 years of professional experience with a related PhD degree.
  • Critical and creative thinking

  • Diverse experience across multiple life-science disciplines including medical physics and radiation biology
  • Ability to build consensus among cross-functional teams
  • Experience developing and implementing operational strategies with focus on meeting long-term goals

This position requires successful completion of a government background check to access government facilities and/or systems. If you are not a U.S. Citizen or U.S. Permanent Resident, the background investigation could take 12-18 months to complete.

External Referral Bonus:


Potential for Telework:


Clearance Level Required:



Yes, 10% of the time

Scheduled Weekly Hours:




Requisition Category:


Job Family:

Research Scientist


Leidos is a Fortune 500® information technology, engineering, and science solutions and services leader working to solve the world's toughest challenges in the defense, intelligence, homeland security, civil, and health markets. The company's 33,000 employees support vital missions for government and commercial customers. Headquartered in Reston, Virginia, Leidos reported annual revenues of approximately $10.19 billion for the fiscal year ended December 28, 2018. For more information, visit

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