Dosimetrist

California Proton Therapy Center LLC • San Diego, CA

1d • $150,000 - $180,000 • Hybrid

About The Position

California Protons Cancer Therapy Center provides world-class cancer treatment to patients from around the globe. Our team includes renowned Radiation Oncologists, Medical Physicists, Radiation Therapists, and Dosimetrists who collaborate to deliver precise, effective proton therapy. We are seeking a Dosimetrist who shares our commitment to patient-centered care and high-quality treatment planning.

The Dosimetrist will collaborate with the Dosimetry Supervisor and Medical Physicist via email, phone, and Zoom to design and optimize intensity-modulated proton therapy plans using pencil beam scanning. Responsibilities include image fusion, contouring using 3D planning software and auto-contouring tools, evaluating doses to targets and organs at risk using constraint templates, participation in treatment procedures as needed (e.g., summation of prior RT or photon comparison planning for insurance approvals), collaborating with Radiation Oncologist for plan review, adjustments and approval, provide proper documentation and instructions for the therapy team. Remote training and onboarding will be provided. Typical work hours are 8:00 a.m. – 5:00 p.m. in the local time zone, with flexibility as needed.

Requirements

• MDCB Certification
• 1–2 years of proton therapy experience or experience planning complex photon treatments
• Varian Eclipse
• College degree with focus in Radiologic Science, Radiation Therapy, or equivalent
• Strong attention to detail and accuracy in all clinical responsibilities
• Excellent communication and teamwork skills
• Ability to manage multiple cases and maintain timelines
• Commitment to maintaining site-specific standards of practice
• Access to reliable internet and a dedicated workspace

Nice To Haves

• ARIA experience preferred

Responsibilities

• Create and optimize proton therapy plans (intensity-modulated proton therapy with pencil-beam scanning)
• Perform image registration, image fusion, and contouring using 3D planning software and auto-contouring tools
• Evaluate dose distributions to targets and organs at risk; apply and adjust constraints from templates
• Collaborate with the Dosimetry Supervisor and Medical Physicist to ensure plan quality and clinical feasibility
• Assist in treatment procedures when needed (e.g., prior RT summation, photon-based plan comparisons for approvals)
• Collaborate with Radiation Oncologist for plan review, adjustments and approval
• Provide proper documentation and instructions for the therapy team
• Maintain documentation and ensure adherence to site-specific standards of practice
• Stay current with evolving proton therapy modalities and planning techniques

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level
• Education Level: Associate degree