JustJoin.IT Stacjonarnie Senior

Senior Python Engineer

Yard Corporate

⚲ Wrocław

35 000 - 50 000 PLN brutto (UoP)

Wymagania

  • Python
  • SQL
  • Pandas
  • NumPy
  • Polars
  • ClickHouse

Opis stanowiska

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!

🔍 Dekoder Ogłoszenia

🔴
technically demanding environment
Może oznaczać zarówno ciekawe wyzwania techniczne, jak i potencjalnie chaotyczne środowisko z brakiem jasnych procesów.
🟡
production-grade Python tools, libraries and data pipelines
Wymaga nie tylko pisania kodu, ale także dbania o jego jakość, testowanie, wdrażanie i utrzymanie w środowisku produkcyjnym.
🟡
improving how data is processed, validated, monitored and made available
Może oznaczać pracę nad istniejącymi, być może niedoskonałymi systemami, a nie budowanie wszystkiego od zera.
🟡
Solving practical problems around data reliability, scale and performance
Może oznaczać rozwiązywanie istniejących problemów, które mogą być złożone i czasochłonne, zamiast tworzenia nowych, innowacyjnych rozwiązań.
🔴
min. 7 years of commercial experience with Python as your primary programming language
Wymaga bardzo dużego doświadczenia, co może sugerować, że szukają kogoś, kto od razu będzie samodzielny i nie będzie potrzebował dużo szkoleń.