About this role
Senior Ontologist - Knowledge Graph & Identity at Sambatv. Location: Warsaw, Mazowieckie, Poland. Role: Owning delivery, Leading design, Building code Requirements: Mid-level data scientist focused on knowledge graphs and identity, with 3–5 years experience, strong Python/PySpark, Databricks, ML, ML Ops, and collaboration. Category: Data and Analytics Seniority: Mid Level Tools: Python, PySpark, Databricks, SQL, Delta Lake, Airflow, RAG, LLM, semantic search, embedding, Probabilistic record linkage Commitment: Full Time Workplace: Hybrid Languages: English