Dosimetrist - Proton Therapy

Job ID
Regular Full-Time
Allied Health


Fred Hutchinson Cancer Center is an independent, nonprofit, unified adult cancer care and research center that is clinically integrated with UW Medicine, a world leader in clinical care, research and learning. The first National Cancer Institute-designated cancer center in the Pacific Northwest, Fred Hutch’s global leadership in bone marrow transplantation, HIV/AIDS prevention, immunotherapy, and COVID-19 vaccines has confirmed our reputation as one of the world’s leading cancer, infectious disease and biomedical research centers. Based in Seattle, Fred Hutch operates eight clinical care sites that provide medical oncology, infusion, radiation, proton therapy, and related services, and network affiliations with hospitals in five states. Together, our fully integrated research and clinical care teams seek to discover new cures for the world’s deadliest diseases and make life beyond cancer a reality.


At Fred Hutch, we believe that the innovation, collaboration, and rigor that result from diversity and inclusion are critical to our mission of eliminating cancer and related diseases. We seek employees who bring different and innovative ways of seeing the world and solving problems. Fred Hutch is in pursuit of becoming an antiracist organization. We are committed to ensuring that all candidates hired share our commitment to diversity, antiracism, and inclusion.


Perform necessary functions on treatment planning software(s) to result in acceptable plan for delivery of prescribed radiation dose to a patient.


  • Perform external beam radiation therapy planning procedures and dose calculations. Planning utilizes CMS XiO and Monaco; a 3-D planning system proprietary to Elekta.
  • Perform high dose radiation therapy (HDR) planning procedures and dose calculations. Planning utilizes BrachyVision; a planning system proprietary to Varian.
  • Use Mosaiq as EMR and other associated software to accomplish this end.
  • Work with physicians, residents, physics, therapists and other RadOnc staff to ensure the patients plan and treatment are simulated, planned and treated in a dosimetrically appropriate and efficient manner.
  • Follow Physician directives to create radiation plans using the treatment planning software(s) and present resultant dosimetry plan.
  • Assist in Simulation process with Therapists/Physicians/Physicists as requested.
  • Perform charge capture for procedures performed. Execute reconciliation of charges with documentation in EMR.
  • Follow treatment planning protocol directives to create and submit appropriate radiation plans according to the protocol instructions.
  • Assist in training other dosimetrists, therapy students and radiation oncology residents.
  • Assists medical physicist in calibration of equipment and radioactive sources. 
  • Develops computerized treatment plan, calculates treatment doses and / or monitor unit setting to deliver dose to a tumor volume as prescribed by a radiation oncologist. 
  • Calculates and documents dose in the patient’s MOSAIQ electronic treatment records.
  • Verifies the mathematical accuracy of all calculations.
  • Assists in the selection, planning, fabrication and quality review and approval of treatment devices to aid in beam delivery modification. 
  • Assists in the planning, production and quality review and approval of immobilization devices and other treatment aids. 
  • Provides technical assistance to the therapeutic radiological physicist in radiation protection.
  • Performs weekly quality assurance checks of radiotherapy treatment charts. 
  • Follows all policies and procedures established for the accurate, timely and effective development and QA of all dosimetry responsibilities.
  • Responsible for thorough and timely documentation and coding of work in the EMR and MOSAIQ.
  • Implements and assists in the maintenance of the quality system for medical dosimetry and record keeping.
  • Participates in quality check lists as source of intra-center commmunication.
  • Ensures that all procedures are followed, verified and QA’d as they relate to the outsourcing or treatment devices, acceptance of said devices at the center, and implementation of said devices during patient treatment.
  • Adheres to treatment protocol standards and submit treatment plan files according to protocol requirements. 
  • Participates and/or lead in the development & implementation of new techniques. 
  • Maintain & update Dosimetry policies & procedures.



  • Bachelors degree preferred, specifically in Radiation Therapy, Math, or Physics.
  • Must be a graduate of a Medical Dosimetry school or a certified radiation therapist with 2 or more years on the job training as a Medical Dosimetrist.
  • Must be board certified in Dosimetry as recognized by MDCB.   
  • Excellent communication skills are essential.
  • May be required to lift, carry or push up to 40lbs.
  • Excellent computer skills.
  • Ability to work flexible hours, including occasional weekends to cover extended treatment times and to support center projects as needed.
  • Ability to work under pressure.
  • Teaching and coaching skills.
  • Technical problem soving.
  • Proficient in Microsoft Office products. 



  • Elekta CMS XiO and Monaco Treatment Planning Systems.
  • Mosaiq EMR software.
  • Varian BrachyVision Treatment Planning System.
  • MU Check Secondary Calculation Software.
  • Elekta Simulator.
  • Elekta Accelerators: Synergy & Infinity with Agility heads.
  • Minimum 5 years of working experience as a Medical Dosimetrist.
  • RayStation, XiO, MIM, MOSAIQ experience.
  • Proton therapy experience.


SCCA has a mandatory COVID-19 vaccination policy, and there are no exceptions for any employee who is patient-facing and/or requires access to SCCA facilities.

Exceptions exist only for employees whose positions are fully remote, with no required access to campus. As a condition of employment, newly hired employees requiring access to campus must provide proof of vaccination before their first day of employment.


A statement describing your commitment and contributions toward greater diversity, equity, inclusion, and antiracism in your career or that will be made through your work at Fred Hutch is requested of all finalists. 

Our Commitment to Diversity

We are proud to be an Equal Employment Opportunity (EEO) and Vietnam Era Veterans Readjustment Assistance Act (VEVRAA) Employer. We are committed to cultivating a workplace in which diverse perspectives and experiences are welcomed and respected. We do not discriminate on the basis of race, color, religion, creed, ancestry, national origin, sex, age, disability (physical or mental), marital or veteran status, genetic information, sexual orientation, gender identity, political ideology, or membership in any other legally protected class. We are an Affirmative Action employer. We encourage individuals with diverse backgrounds to apply and desire priority referrals of protected veterans. If due to a disability you need assistance/and or a reasonable accommodation during the application or recruiting process, please send a request to our Employee Services Center at or by calling 206-667-4700.


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