Design, develop, and extend data pipelines in Azure Databricks across the Bronze, Silver, and Gold layers Build production PySpark and SQL workloads on Delta Lake Integrate and harmonise external, internal, and investment data sources into the existing data model Maintain and evolve the Delta Lake architecture supporting ESG and investment KPIs Optimise performance on large datasets — partitioning, Z-ordering, job tuning, cluster sizing Own data quality, testing, and CI/CD for the Databricks layer Expose a clean, well-modelled Gold layer for the Power BI semantic model that sits downstream Work within an Agile delivery model (Scrum / SAFe) using Azure DevOps Motivizer Benefits Platform to choose and manage all your benefits in one place. You receive a budget (550 PLN monthly). You can choose medical care package, meal tickets, sports cards (we have Multisport and on preferential terms, we have membership cards to one of the most popular Gyms), cinema tickets, shop vouchers, discounts and many more.Language Courses – you'll have access to a multi-language learning platform enabling you to practice you language skills and learn new ones!Regular and systematic further training opportunities - both internally and from external providers. We support your ongoing learning and development.Cooperation within an internal community is our everyday reality. We have networking events, coding challenges, and company parties for different occasions.University degree in computer science, mathematics, physics or similar field.Strong hands-on experience with Azure Databricks and Delta Lake in production — this is the core of the role. Expert SQL and solid Python / PySpark skills. Solid understanding of data modelling (star schema, dimensional modelling, medallion architecture). Experience joining and harmonising data from multiple heterogeneous sources at scale. Experience with performance tuning on Delta Lake / Spark workloads. Comfortable onboarding into existing, complex codebases with limited handover. Experience working in Agile teams with Azure DevOps. Strong communication skills in English and Polish; German is a clear plus. Open to hybrid work, with 1 day per month at our Katowice office.Nice to have
Experience in financial services, insurance, or asset management Exposure to ESG, sustainability, or regulatory reporting Databricks certifications (Data Engineer Associate / Professional) Experience with Unity Catalog, Databricks Asset Bundles, or DLT Basic awareness of Power BI as a downstream consumer — not a requirement Cluster Reply is the Reply Group company specializing in consulting and system integration of Microsoft technologies. As a Microsoft partner, Cluster Reply is active in Germany, Austria and Switzerland and works within the Reply network with sister companies in Brazil, Great Britain, Italy as well as the USA. The company focuses on innovation and supports customers in their digital transformation. The solutions range from on-premises to cloud applications in the areas of modern workplace and security, business applications, applications and infrastructure as well as data and artificial intelligence.