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External Dosimetrist/Health Physicist

Associate | Full-time
Environmental, Safety & Health | livermore, CA | 06/15/2021

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Company Description

Join us and make YOUR mark on the World!

Are you interested in joining some of the brightest talent in the world to strengthen the United States’ security? Come join Lawrence Livermore National Laboratory (LLNL) where our employees apply their expertise to create solutions for BIG ideas that make our world a better place.

We are committed to a diverse and equitable workforce with an inclusive culture that values and celebrates the diversity of our people, talents, ideas, experiences, and perspectives. This is essential to innovation and creativity for continued success of the Laboratory’s mission.

Job Description

We have an opening for a dual role External Dosimetrist/Health Physicist (HP) in the Radiation Protection Functional Area (RPFA) within the ES&H Directorate.  You will help to apply principles and advanced dosimetric methods to the LLNL External Dosimetry Program.  You will also help create new radiation protection program elements and maintain existing programs and provide comprehensive health physics support to diverse groups of customers working with ionizing radiation. Depending on business needs, you will be provided opportunities to support the ES&H Integrated Safety Teams.

This position will be filled at either level based on knowledge and related experience as assessed by the hiring team. Additional job responsibilities (outlined below) will be assigned if hired at the higher level. 

In this role you will 

  • Support the External Dosimetry Technical Lead in performing various analyses of dosimetric  data.
  • Develop and/or improve upon existing dosimetric operating procedures (e.g., quality assurance manuals, instrument and calibration operations, data handling).
  • Support the External Dosimetry Technical Lead in reviewing reader reports, conducting exposure investigations, and improving the dose calculating and recordkeeping databases.
  • Evaluate, revise, and maintain radiation protection processes, procedures, and other program documents, including the development of new procedures and radiation protection training materials. Deliver training or presentations as needed.
  • Provide health physics field operation assistance to team health physicists and other clients. Assist with health physics support during audits, inspections, and assessments by internal and external entities.
  • Provide comprehensive health physics field support to LLNL programs in specific areas of assignment and provide feedback to management regarding the effectiveness of the radiation protection program in their areas of responsibility.
  • Participate in responses to radiological emergencies and incidents on site.
  • Perform other duties as assigned.

Additional job responsibilities, at the TSS.3 level

  • Provide advanced HP solutions for LLNL programs in specific areas of assignment including but not limited to: establish appropriate personnel dosimetry, bioassay, and whole-body counting programs and evaluate the results of these monitoring programs; evaluate and provide radiation safety input to safety procedures and to facility, equipment, and shielding designs, and represent the organization as the technical resource on tasks and projects.
  • Respond to radiological emergencies and incidents on site, investigate incidents or accidents involving radiation and make recommendations to all levels of management to prevent a reoccurrence; provide HP solutions during audits, inspections and site verifications by internal and external agencies.
  • Mentor less experienced personnel.



  • Ability to secure and maintain a U.S. DOE Q-level security clearance which requires U.S. citizenship.
  • Bachelor’s degree or higher in Health Physics, Radiation Physics, Radiation Protection, or other relevant technical area, or the equivalent combination of education and significant related experience.
  • Familiarity with dosimetry-related standards and regulations and dosimetry systems, including dosimeters, and processing equipment and/or.
  • Demonstrated  analytical and computational skills including Microsoft Office (e.g., Excel, Word, PowerPoint, and Outlook) and experience in data acquisition and manipulation, and statistical analysis, .
  • Experience developing and implementing technical and operational procedures and demonstrated ability to implement solutions to issues using broad organizational, problem solving, conflict resolution, decision making and leadership skills, and/or.
  • Proficient verbal and written communication skills necessary to effectively write, present, explain and communicate moderately complex information to all levels of personnel.
  • Ability to work independently and in a team environment with a broad cross-section of people and organizations, managing moderately-complex to complex projects and meeting schedules.
  • Experience balancing multiple short and long-term deadlines and setting priorities.
  • Ability to become medically qualified to wear respiratory protection equipment and to secure and maintain certification in the Human Reliability Program (HRP) which includes polygraph examination, physical and psychological assessment, and random drug and alcohol testing.

Additional qualifications at the TSS.3 level 

  • Strong knowledge of advanced concepts in dosimetry and experience in developing and implementing new ideas or approaches to dosimetry processes to improve program effectiveness.
  • Significant experience leading independent HP work or where assigned work is not well defined, conducting hazard analysis, evaluating new health and safety standards, and providing technical direction/leadership to health and safety staff on HP related matters, and providing emergency response and participation in the investigation of incidents or accidents involving radiological hazards and make recommendations to all levels of management to prevent a reoccurrence.  
  • Advanced verbal and written communication skills necessary to effectively collaborate in a team environment and to present and communicate technical information to peers and immediate levels of management.  Mentor less experienced personnel.

Qualifications We Desire

  • Master’s degree in Health Physics, or another closely-related technical area.
  • Certification by the American Board of Health Physics.

Additional Information

Why Lawrence Livermore National Laboratory?

  • Included in 2021 Best Places to Work by Glassdoor!
  • Work for a premier innovative national Laboratory
  • Comprehensive Benefits Package
  • Flexible schedules (*depending on project needs)
  • Collaborative, creative, inclusive, and fun team environment

Learn more about our company, selection process, position types and security clearances by visiting our Career site

Security Clearance

LLNL is a Department of Energy (DOE) and National Nuclear Security Administration (NNSA) Laboratory.  Some positions will require a DOE L or Q clearance (please reference Security Clearance requirement above).  If you are selected and a clearance is required, we will initiate a Federal background investigation to determine if you meet eligibility requirements for access to classified information or matter. In addition, all L or Q cleared employees are subject to random drug testing.  An L or Q clearance requires U.S. citizenship.  For additional information please see DOE Order 472.2.

Pre-Employment Drug Test

External applicant(s) selected for this position will be required to pass a post-offer, pre-employment drug test. This includes testing for use of marijuana as Federal Law applies to us as a Federal Contractor.

Pre-Placement Medical Exam

A job related pre-placement medical examination may be required.

Equal Employment Opportunity

LLNL is an affirmative action and equal opportunity employer that values and hires a diverse workforce. All qualified applicants will receive consideration for employment without regard to race, color, religion, marital status, national origin, ancestry, sex, sexual orientation, gender identity, disability, medical condition, pregnancy, protected veteran status, age, citizenship, or any other characteristic protected by applicable laws.

If you need assistance and/or a reasonable accommodation during the application or the recruiting process, please submit a request via our online form

California Privacy Notice

The California Consumer Privacy Act (CCPA) grants privacy rights to all California residents. The law also entitles job applicants, employees, and non-employee workers to be notified of what personal information LLNL collects and for what purpose. The Employee Privacy Notice can be accessed here.

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