# Radiation Therapist or Dosimetrist: Medical Image Contouring for AI (Remote, Brazil)

Radiotherapy and dosimetry (RTT) · Remote, Brazil · Freelance

- **Typical project pay**: USD 15-25 per hour
- **Where**: Remote, Brazil
- **Contract**: Freelance
- **Status**: Applications open
- **Published**: 2026-09-28

Each project invitation states the work, your pay, what the pay covers and what the work must meet. You see it before you accept.

A YPAI, empresa norueguesa de dados para IA, procura especialistas em radioterapia para contornar estudos de TC e RM pseudonimizados (validação de IA). 100% remoto, pagamento por hora (PJ). Detalhes em inglês abaixo; é necessário inglês escrito suficiente para seguir um protocolo.

We are hiring clinicians and planning professionals who routinely contour organs at risk in radiotherapy workflows: medical dosimetrists, treatment planners, RTTs and medical physicists. You contour OARs on head and neck and brain CT and MRI, a radiation oncologist reviews every case, and the contours become the expert reference set used to validate a radiotherapy auto-contouring product. First project: 10 to 40 hours over 2 to 4 weeks, remote, on your own schedule, with further projects for contourers who deliver well.

### The work

- Organs at risk on pseudonymised planning CT, and on MRI where the protocol asks for it; mainly head and neck and brain.
- Protocol first; where it is silent, Brouwer 2015 for head and neck OARs and the EPTN atlas for brain. TG-263 structure names.
- Two calibration cases before production. A radiation oncologist reviews every case independently; you correct after review and log any protocol question.
- Cases come in batches from a small, named panel; volume and turnaround are agreed per project.

### Who we are looking for

- Qualified dosimetrist, treatment planner, RTT or medical physicist who contours OARs as part of clinical work.
- Head and neck and/or brain planning experience.
- Any treatment planning system or research contouring tool; onboarding in the project platform is provided.
- Written English good enough to follow a protocol and log decisions.

### How the work runs

- Fully remote, flexible hours, as an independent contractor. Open to specialists living in Brazil.
- Confidentiality and project-specific data handling requirements apply, and you sign them before any access.
- If your employment contract requires approval for outside work, please arrange it before you accept a project.

Our team reviews applications for this role and contacts selected applicants by email.

## Apply

Takes a couple of minutes. No CV needed.

- **Payment**: Via PayPal, Wise, or bank transfer
- **When you are paid**: Paid every two weeks after approved work.
- **Fees to you**: Never, at any stage. If someone asks, it is not us
- **Who hires you**: YPAI, a registered Norwegian company that collects and annotates data for AI

[Apply now](https://freelancer.ypai.ai/jobs/openings/radiation-therapist-dosimetrist-ai-contouring-brazil)