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Health Physicist (Ionizing Radiation Specialist)

Radiation Safety Division
Gaithersburg, MD Other
POSTED ON 4/21/2026
AVAILABLE BEFORE 4/27/2026

Performs professional work to protect personnel and environments from ionizing radiation hazards by identifying and evaluating potential radiation hazards across diverse facility operations. Applies and implements procedures to eliminate, control, or minimize radiation exposure.

This notice is issued under direct-hire authority to recruit new talent to occupations for which NIST has a severe shortage of candidates.

Qualifications:

Basic Requirements:
  1. Degree: natural science or engineering that included at least 30 semester hours in health physics, engineering, radiological science, chemistry, physics, biology, mathematics, and/or calculus.

    or

  2. Combination of education and experience -- courses as shown in A above, plus appropriate experience or other education; or certification as a health physicist by the American Board of Health Physics, plus appropriate experience and other education that provided an understanding of sciences applicable to health physics comparable to that described in paragraph A.

In addition to the Basic Education requirements you must possess either 3 years of progressively higher level graduate education leading to a Ph.D. degree or Ph.D. or equivalent doctoral degree

OR

1 year (52 weeks) of specialized experience equivalent to the GS-9 level (ZP-II at NIST). Specialized experience is defined as:
  • Experience working in laboratory environments with radioactive materials.
  • Including experience in performance of professional or technical work to protect personnel and environments from ionizing radiation hazards.
AND Qualifying experience includes at least two of the following:
(1) conducting radiation laboratory audits, weekly surveys, and leak testing to identify and evaluate hazards in accordance with license conditions;
(2) performing the maintenance, calibration, and quality assurance of portable and fixed radiation detection instruments, including LSC counting or gamma spectroscopy;
(3) executing logistics for the shipping, receiving, and packaging of radioactive materials while ensuring compliance with NRC, DOT, and EPA regulations ; or
(4) coordinating radioactive waste collection and processing projects while maintaining meticulous records of radiation levels and personnel exposures.

Experience refers to paid and unpaid experience, including volunteer work done through National Service programs (e.g., Peace Corps, AmeriCorps) and other organizations (e.g., professional; philanthropic; religious; spiritual; community, student, social). Volunteer work helps build critical competencies, knowledge, and skills and can provide valuable training and experience that translates directly to paid employment. You will receive credit for all qualifying experience, including volunteer experience.

The qualification requirements in this vacancy announcement are based on the U.S. Office of Personnel Management (OPM) Qualification Standards Handbook.

If requesting reconsideration of your qualification determination, please refer to the following site: Applicant Reconsideration

Responsibilities:

The Radiation Safety Division ensures compliance with U.S. Nuclear Regulatory Commission regulations, including the specific requirements of NIST's three NRC issued radioactive materials licenses, supporting the safe use of radiation and radioactive materials for over 2,000 radioactive sources. The radiation safety program is managed by the Radiation Safety Officer and is overseen by the NIST Ionizing Radiation Safety Committee.

In this position you will:
  • Monitor operating programs to ensure strict compliance with NRC, DOT, and OSHA license conditions
  • Conduct radiation laboratory audits and surveys to identify, evaluate, and mitigate potential hazards
  • Coordinate the collection, packaging, and processing of radioactive material for waste disposal
  • Conduct quantitative and qualitative analysis using methodologies like LSC counting or gamma spectroscopy
  • Perform maintenance, calibration, and QA/QC on portable and fixed radiation detection instruments

Salary : $85,447

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