Tester Hurtowni Danych / ETL Tester (Data Migration)

We are part of hiberus - one of the leading technology companies in Spain with a presence in over 14 countries, employing over 3,000 specialists and serving Clients all over the world. We are professionals who have many years of experience in areas such as: IT, BI, project and enterprise management. We are characterized by high quality and efficiency of implemented projects by properly matching the candidate to the profile of the sought position and the organizational culture prevailing in the company. We currently cooperate with prestigious institutions in the areas of banking, finance, insurance, pharmacy, health care and tourism, both in Poland and abroad. Partnership, reliability and transparency - these are the values that guide us in all our activities.

• 1–3 years of experience in software testing, preferably in the financial sector
• Experience testing data warehouses or ETL processes
• Very good knowledge of SQL (Oracle, MS SQL, or similar)
• Ability to write complex queries (JOIN, UNION, INTERSECT, etc.)
• Experience working with SQL tools (e.g., SQL Developer, SSMS)
• Knowledge of Jira and test management tools (e.g., Xray, TestRail, Zephyr, QMetry)
• Knowledge of at least one ETL tool (e.g., DataStage, Talend, Informatica, Ab Initio)
• Ability to analyze data and work with technical documentation
• Good communication and collaboration skills with technical and business teams
• Independence, attention to detail, and ability to work under time pressure
• Communicative proficiency in English

Nice to have:

• Experience with data migrations or modernization projects
• Knowledge of IBM DataStage and/or Ab Initio
• Experience in the area of customer data (KYC, onboarding)
• Certifications in ISTQB, Agile (Scrum/SAFe), SQL/PL/SQL, or DWH

• Designing and executing tests (ETL / DWH) based on documentation (HLD, User Stories, business requirements)
• Verifying the correctness of ETL processes, transformations, mappings, and data flows
• Testing and validating data quality (completeness, consistency, correctness) in the data warehouse and post-migration
• Analyzing test results and identifying and reporting defects
• Creating and maintaining test scenarios and test cases
• Preparing and validating test data
• Collaborating with analysts, developers, and business stakeholders (diagnosing and resolving issues)
• Participating in integration and migration testing
• Reporting results and preparing implementation recommendations
• Working with Agile and/or traditional methodologies