Senior Data Scientist – LLM / Clinical NLP

V
VectenHealthcare data
Remote PolandContractSenior
Salary30,000 - 38,000 PLN per month
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Job Details

Languages
Pl C1, en C1; Fluent English
Experience
Around 5 years of hands-on data science or ML work
Required Skills
PythonSQLLLM

Requirements

  • Master's degree or PhD in a quantitative field such as computer science, machine learning, data science, or biostatistics.
  • Around 5 years of hands-on data science or ML work, including taking models to production on messy real-world data.
  • Hands-on NLP experience with transformer encoders, including fine-tuning BERT or RoBERTa-family models and biomedical or clinical variants such as BioBERT or ClinicalBERT.
  • Experience with NER, classification, or relation extraction, typically using Hugging Face Transformers.
  • Hands-on generative LLM experience with prompt design, structured outputs, fine-tuning such as LoRA / PEFT, and RAG.
  • Experience evaluating LLM outputs at scale using gold sets, error analysis, or LLM-as-judge.
  • A rigorous approach to evaluating whether models are correct, not merely plausible.
  • Strong Python and SQL.
  • Use AI tools such as Claude and Cursor as a core part of delivery.
  • Fluent English and confidence presenting to cross-functional and non-technical stakeholders.
  • Preferred: experience with EHR data or clinical notes and familiarity with ICD, CPT, or RxNorm.
  • Nice to have: PySpark, Databricks, MLflow, AWS, Amazon SageMaker, R, medical imaging data, real-world evidence studies, peer-reviewed publications, or TypeScript.

Responsibilities

  • Build and improve LLM- and transformer-based pipelines for extracting structured data from clinical notes, including named entity recognition, text classification, and relation extraction.
  • Evaluate models using gold-standard datasets, error analysis, and metrics trusted by clinicians and researchers.
  • Fine-tune, deploy, and monitor models in production.
  • Work with Medical and Product teams to turn clinical questions into concrete data and model requirements.
  • Present results and trade-offs clearly to technical and non-technical audiences.
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30,000 - 38,000 PLN per month
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