Summary Serves as a Therapeutic Medical Physicist in Radiation Oncology, ensuring safe and accurate delivery of radiation therapy. Performs treatment planning support, quality assurance, and dose verification. GS-12 works under supervision developing proficiency, while GS-13 independently manages complex treatments, leads QA programs, and provides expert consultation on advanced techniques and technologies. Responsibilities This vacancy will remain open until filled. The first cut-off date is April 29, 2026. Additional applications will be referred as needed. Duties spanning both grades: Apply principles of medical physics to ensure the safe, accurate, and effective delivery of radiation therapy treatments. Evaluate radiation treatment plans for quality, safety, and accuracy to ensure prescribed dose delivery. Perform patient-specific treatment validation measurements and support treatment planning and delivery processes. Monitor and assess radiation therapy procedures, including exter...