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Digital Pathology Annotation for Cancer Diagnostics AI

Remote · Global Hourly Currently live $25–$40/hr
Overview

Annotate digitized cancer tissue slides for AI diagnostic systems, identifying and classifying cells and tissue regions on H&E and IHC-stained whole-slide images.

About this job

We're seeking board-certified pathologists to annotate whole-slide images used to train AI systems for cancer diagnostics. The work involves cell-level and region-level annotation on H&E and immunohistochemistry (IHC) stained slides: marking tumor cells, classifying cell types, scoring biomarker expression, and correcting AI-proposed annotations. Annotation is done in the client's own digital pathology software, with full training provided. Each annotation becomes labeled training data that directly shapes how the model reads tissue.

Both engagement types are available for this role: flexible hours alongside your clinical practice, or a dedicated full-time position (160 hours per month) with fixed working hours for a single client. State your preferred arrangement when you apply.

What you'll do
  • Annotate tumor cells, normal cells, and immune cells on digitized H&E and IHC slides.
  • Classify tissue regions (tumor, stroma, necrosis, artifact) on whole-slide images.
  • Score IHC biomarker expression (for example ER, PR, HER2, Ki-67) at cell level.
  • Confirm or correct AI-proposed cell detections and classifications.
  • Flag ambiguous cases and slide-quality issues per the project protocol.
  • Apply structured annotation guidelines consistently across case batches.
  • Work in the client's annotation software following provided training.
Required skills
Medical Image AnnotationPathology / Whole-Slide AnnotationOncology (Medical)PathologyIHC / HistologyBiomarker QuantificationTumor Cell ClassificationBreast Pathology
Who can apply
  • Degree: MBBS / MBChB / MBBCh / BM BCh / BMBS, MD (entry-level) / MDCM, Staatsexamen / Docteur en Medecine / Titulo de Medico, MD / MS (postgraduate), MD (Res), Currently studying - postgraduate, Currently studying - doctoral
  • Field of study: Pathology, Histopathology & Cytotechnology
About grayder

Life science AI is only as good as the experts who train it.

A vetted network of doctors, scientists, and regulatory specialists who train and evaluate the models behind drug discovery, clinical trials, medical devices, and healthcare. Remote, flexible, matched to your field.

What specialists do

  • Annotation — labelling clinical text, imaging and molecular data
  • Model evaluation — scoring outputs against expert standards
  • Rubric design and execution
  • Fine-tuning data — writing expert responses
  • Q&A sets, summaries and reports

Why specialists join

  • Work matched to your speciality
  • Remote and flexible — on your own schedule
  • Credentialed by your peers
  • Meaningful impact on healthcare AI
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