Senior Data Scientist, Healthcare AdTech — Scalable ML

Sii Poland; Katowice; On-site; PLN 180,000 - 300,000; Full time

Benefits offered by this job

Great Place to Work

Centre of internal trainings

Profit sharing

Many experts you can learn from

Open and accessible management team

Regular integration events and trips

Comfortable and well-equipped offices

MySii app

Medical care

Job summary

Sii Poland in Katowice is seeking an experienced ML Engineer to design and implement probabilistic methodologies for large healthcare datasets and train next‑gen models for improved predictive power and scalability. You will work with Python data-science tools and collaborate across data engineering and product teams.

The role focuses on extracting entities, building graph-based insights, and maintaining analytics pipelines for monitoring model performance in production environments.

Qualifications

• Minimum 5 years of experience in training and monitoring ML models for production use.
• Experience with data and ML engineering, including ML-facing ETL processes over very large datasets and data-quality monitoring.
• Expertise in Python data-science and ML libraries like scikit-learn, PyTorch, LightGBM, Splink, spaCy, and Hugging Face.
• Practical experience in probabilistic methods for entity linking, matching, imputation, scoring, and evaluation.
• Strong command of SQL for distributed warehouses such as Snowflake, BigQuery, or Databricks.
• Advanced level of English.

Responsibilities

• Measuring existing model performance and finding ways to improve it.
• Owning the design of the new methodology and training the next-gen model for increased predictive power, sample efficiency, and scalability to large datasets.
• Extracting unique entities and sparse attributes from heterogeneous sources – both structured and unstructured.
• Designing and implementing probabilistic entity linking & matching across multiple large healthcare datasets.
• Exploring graph technologies and graph theory.
• Building and owning an analytics data store, evaluation, and monitoring pipelines.

Skills

ML engineering

Python data-science

SQL

English

Tools

PyTorch

LightGBM

scikit-learn

SpaCy

Hugging Face

Splink

Job description

Sii Poland in Katowice is seeking an experienced ML Engineer to design and implement probabilistic methodologies for large healthcare datasets and train next‑gen models for improved predictive power and scalability. You will work with Python data-science tools and collaborate across data engineering and product teams.

The role focuses on extracting entities, building graph-based insights, and maintaining analytics pipelines for monitoring model performance in production environments.