Senior Data Scientist: AI & Graph ML for Healthcare

Sii Poland; Białystok; On-site; PLN 180,000 - 280,000; Full time

Benefits offered by this job

Great Place to Work

Centre of internal trainings

Profit sharing

Regular integration events and trips

MySii app

Medical care

Job summary

Sii Poland is seeking a Senior Data Scientist to join a project building an AI-powered operating system for healthcare marketing. You will design and implement entity extraction, linking, and resolution at scale, reconciling large datasets into reliable entities and attributes.

You will work on production-grade products that create real value in the life sciences industry, ensuring the integrity and quality of data used for audience reach and insights.

Qualifications

• 5+ years of experience shipping production ML or data-science work, including entity linking and resolution at scale.
• Strong Python production-grade coding, testing, and typing practices.
• Proficient SQL with experience in FastAPI, Docker, pytest, Git and CI/CD.

Responsibilities

• Extract entities and attributes from heterogeneous sources including warehouse tables, registries, and documents.
• Design and implement probabilistic entity linking and deduplication across large healthcare datasets.
• Own the linking pipeline end-to-end with pairwise and graph-based scoring and calibrated match probabilities.
• Define how link quality is measured via precision, recall, calibration, and error analysis.
• Link entities to controlled medical vocabularies for consistency across sources.
• Utilize graph representations and graph ML techniques for linking, clustering, centrality, and link prediction.
• Build and maintain the data and graph estate, including warehouse transformation and monitoring.
• Improve performance of existing algorithms as data sources evolve.

Skills

Production ML experience

Python proficiency

English proficiency

Tools

Python

SQL

FastAPI

Docker

pytest

Git

CI/CD

Neo4j

Amazon Neptune

Snowflake

BigQuery

Databricks

Job description

Sii Poland is seeking a Senior Data Scientist to join a project building an AI-powered operating system for healthcare marketing. You will design and implement entity extraction, linking, and resolution at scale, reconciling large datasets into reliable entities and attributes.

You will work on production-grade products that create real value in the life sciences industry, ensuring the integrity and quality of data used for audience reach and insights.