Dosimetrist (m/f)
The Dosimetrist calculates and optimizes the distribution of radiation doses in radiotherapy, working closely with medical physicists and radiation oncologists. Their technical expertise ensures the effectiveness and safety of treatments delivered to patients.
Responsibilities
Perform dosimetric calculations
Establish radiotherapy treatment plans based on medical prescriptions and the patient's anatomical constraints.
Optimize treatment plans
Adjust dose distribution to maximize effectiveness on the target area while preserving surrounding healthy tissue.
Participate in quality control checks
Verify the reliability of equipment and planning software used for treatments.
Ensure record traceability
Document and archive dosimetric data in compliance with safety and quality procedures.
Key skills
Hard skills
Expert use of IT tools dedicated to calculating and simulating radiotherapy treatment plans.
Understanding of radiation-matter interactions required to create safe and effective treatment plans.
Fine-tuning of treatment parameters to combine therapeutic efficacy with the preservation of organs at risk.
Rigorous application of radiotherapy equipment verification procedures.
Soft skills
Essential reliability in calculations on which the safety of the patient's treatment directly depends.
Ability to maintain a high level of focus on demanding technical tasks.
Close collaboration with medical physicists, oncologists, and medical radiation technologists.
Acute awareness of safety issues related to delivering radiation treatments.
Working conditions
Terms
The Dosimetrist works within radiotherapy departments in healthcare facilities (hospitals, cancer research centers, specialized clinics). The position is mostly desk-based, with daytime hours, and requires sustained concentration.
Qualifications & training
- Reference qualification: DTS in Medical Imaging and Therapeutic Radiology supplemented by a specialization in dosimetry, or a qualification as a medical radiation technologist supplemented by an Inter-University Diploma (DIU) in dosimetry.
- Other pathways: University education in medical physics for the most specialized positions.
Career progression
- Lead radiotherapy technologist
- Radiotherapy quality coordinator
- Dosimetry trainer
Salaries
France Travail, 2026 (Medical radiation technologist job sheet, J1306)
Monthly salary
As the France Travail job sheet associated with this profession is for Medical Radiation Technologist (the reference profession for access to dosimetry), 80% of job offers in this field offer a gross monthly salary between €2,000 and €3,305.
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Frequently asked questions about this job
Key takeaways
The profession is accessible with a DTS in medical imaging and therapeutic radiology supplemented by a specialization in dosimetry, or a medical radiation technologist qualification supplemented by an Inter-University Diploma (DIU) in dosimetry.
The radiation technologist performs imaging and treatment procedures directly with the patient, whereas the dosimetrist focuses on calculating and optimizing treatment plans beforehand, in collaboration with the medical physicist.
The position requires sustained concentration on high-responsibility technical tasks, in an environment where calculation precision directly determines patient safety.
Looking to recruit or reach out to one of our agencies for this job?
Whether you are a healthcare facility, a radiotherapy center, or a specialized clinic looking for qualified professionals, or looking to contract recruitment services for your technical teams: the Actual Médical agency network selects and provides you with rigorously assessed dosimetrist profiles, ready for rapid deployment.
Usage note
This job profile serves as a general reference to describe the role, responsibilities, and scope of the Dosimetrist (m/f) position within the Healthcare sector. It aims to help candidates understand the realities of the profession, and to help companies/recruiters understand the profile, associated skills, and recruitment solutions offered by Actual group.