Advanced SQL skills (data analysis, validation, transformation), ETL tools – at least 4 years of practical experience in designing and developing ETL processes (particularly Informatica), Data migrations – experience in large-scale data migration projects, ERP systems – working with data from major ERP systems (e.g., SAP, Salesforce, or other enterprise ERP), Data modelling – designing and analysing data models, Azure SQL – experience with relational databases in the Azure environment, Data quality & profiling – tools and techniques to ensure data quality, consistency, and completeness, Data transformation and mapping – implementing transformation and validation rules, ETL performance optimization – handling high-volume data efficiently, Fluency in English, Fluent in Polish required, Residing in Poland required