Senior Data Scientist (NLP / LLM)

Seeking a Senior Data Scientist with expertise in NLP and LLM, offering flexible work locations in Russia.

- 3+ years of experience in NLP/ML. - Proficient in Python, including typing, tests, and production code. - Experience with PyTorch and HuggingFace, fine-tuning transformers. - Knowledge of Accelerate/DeepSpeed or similar. - Experience building data pipelines and reproducible experiments. - Familiarity with MLflow/ClearML. - Understanding of RAG, retrieval, tool-calling, agents. - Experience with hallucinations and quality degradation. - Skills in quality assessment (metrics, error analysis, ablations). - Domain knowledge in medicine/biomedicine is a plus. - Experience with RLHF, DPO, alignment, safety evaluation. - Data production output (vLLM), latency/cost optimization. - Experience with Docker, Kubernetes, monitoring.

- Location: Russia. Office, hybrid, or remote.