Senior Python Engineer

Senior Python Engineer

📍 Wrocław, Poland | Onsite
📄 Employment contract
💰 Up to 50,000 PLN gross/month

We are looking for a Senior Python Engineer to join a team building data tooling, libraries and production pipelines used in a high-scale, technically demanding environment. You will work closely with large historical, time-series and event-based datasets, helping improve how data is processed, validated, monitored and made available to technical teams.

What you will work on

• Building and maintaining production-grade Python tools, libraries and data pipelines

• Working with large-scale historical, time-series and event-based datasets

• Improving data quality, validation, observability and monitoring

• Optimising data-processing workflows and pipeline performance

• Writing SQL queries and working with analytical databases and data platforms

• Collaborating with engineers and technical users to improve internal data workflows

• Solving practical problems around data reliability, scale and performance

What we are looking for

• min. 7 years of commercial experience with Python as your primary programming language

• Strong hands-on experience with Pandas, NumPy, Polars, Dask or similar Python data tooling

• Experience working with time-series, event-driven or large historical datasets

• Strong SQL skills

• Hands-on experience with analytical databases or data platforms such as ClickHouse, Snowflake, BigQuery, Redshift, Databricks, Druid or similar

• Experience building production data pipelines, internal tools or reusable Python components

• A practical approach to data quality, debugging, monitoring and performance optimisation

• Good English communication skills (C1)

What is offered

• Employment contract

• Salary up to 50,000 PLN gross per month

• Onsite work in Wrocław

• A chance to work on technically challenging, data-heavy problems

• Real influence on tools and workflows used by experienced technical teams

• International working environment and collaboration with strong engineering profiles

If you enjoy Python, large-scale data and building reliable tools that make other teams more effective, we would be happy to speak with you!