About the project

• Join one of the fastest-growing IT and engineering services companies in Europe! At Sii, we work with top-tier clients across various industries, delivering cutting-edge projects with passion and integrity. We’re currently looking for an ETL Manual Tester to support our team in ensuring data quality and reliability across modern data platforms.
• You can work mostly remotely, but if you ever feel like grabbing a coffee with your team or enjoying a change of scenery, our modern office in Wrocław is always open for you.
• If you have an eye for detail and a passion for improving data processes, we’d love to hear from you. Apply now and become part of the Sii family!

Your responsibilities

• Perform manual testing of ETL processes, ensuring data integrity, consistency, and completeness
• Design, execute, and maintain test cases and test scenarios based on business and technical requirements
• Validate source-to-target data mappings and transformations
• Collaborate with developers, analysts, and other testers to investigate issues and clarify requirements
• Identify and document defects, and support teams in root cause analysis
• Participate in regression, integration, and system testing phases
• Contribute to test planning and estimation activities

Our requirements

• At least 5 years of professional experience in manual software testing, ideally in data-focused or ETL environments
• Strong motivation to continue developing within the manual testing path
• Solid understanding of ETL processes, data pipelines, and data validation techniques
• Proficiency in writing and executing SQL queries to verify data accuracy and transformations
• Familiarity with test design techniques, defect tracking tools, and test documentation standards
• Strong analytical thinking and a keen eye for detail
• Good English skills, both written and spoken
• Fluent Polish required
• Residing in Poland required

Optional

• Experience with BI tools, cloud data platforms (e.g., Azure, AWS, GCP), or data quality frameworks
• Knowledge of Agile methodologies and tools like JIRA, Confluence, or TestRail

Technologies we use

What we offer

• Great Place to Work since 2015 - it’s thanks to feedback from our workers that we get this special title and constantly implement new ideas

• Employment stability - revenue of PLN 2.1BN, no debts, since 2006 on the market

• We share the profit with Workers - over PLN 60M has already been allocated for this aim since 2022

• Attractive benefits package - private healthcare, benefits cafeteria platform, car discounts and more

• Comfortable workplace – class A offices or remote work

• Dozens of fascinating projects for prestigious brands from all over the world – you can change them thanks to Job Changer application

• PLN 1 000 000 per year for your ideas - with this amount, we support the passions and voluntary actions of our workers

• Investment in your growth – meetups, webinars, training platform and technology blog – you choose

• Fantastic atmosphere created by all Sii Power People