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September 20, 2026

Data Science & Machine Learning Engineer

Senior • On-site

270,400 - 301,600 PLN/yr

Warsaw, Poland

Quick Facts

  • Role: Data Science & Machine Learning Engineer

  • Work model: Hybrid (Warsaw; 2 days/month onsite, rest remote)

  • Rate: Up to 140 PLN/h net on B2B

Description

You will design, build, and implement production-ready data analytics and machine learning solutions for projects including process mining, churn analysis, fraud prevention, and NLP. The role is hands-on and engineering-focused: you will deploy and maintain solutions in production, identify bottlenecks, and find cost optimizations. Collaboration with the business is supported by the team; your key strengths are programming, production ML experience, and strong classic machine learning skills.

Responsibilities

  • Design and implement data solutions

  • Collaborate with the business team to identify analytics needs

  • Analyze large datasets to derive actionable insights

  • Maintain and optimize existing production solutions

  • Deploy and improve machine learning processes

  • Identify bottlenecks and perform cost optimization

Requirements

  • Minimum 3 years of commercial experience

  • Experience supporting and deploying production solutions

  • Very good Python knowledge (including scipy, pandas, matplotlib)

  • Experience with Apache Spark

  • Experience with Scala or Java

  • Strong experience with classic machine learning

  • SQL with ability to write queries independently

  • Snowflake and Azure Synapse

  • Basic DevOps: Docker, Kubernetes; ability to create and manage containers, handle basic tasks, and work with REST API

  • Knowledge of machine learning topics

  • Ability to work independently on production implementations and maintenance

Benefits

  • Hybrid work model (Warsaw; 2 days/month onsite)

  • Up to 140 PLN/h net on B2B

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