QA Engineer - Data Warehouse

ComeOn Group in short

Founded in 2008, ComeOn Group is a leading global player in the rapidly growing iGaming market. Having launched its first online brand in 2010, ComeOn Group is running a wide range of exciting brands across multiple markets. Operating more than 20 brands on its proprietary platform providing a secure, innovative and entertainment-led player experience across casino and sports betting. ComeOn Group is an international employer within the iGaming industry and has over 500 talented employees across 7 main locations. 

Location: Katowice, Poland Hybrid/Fully Remote

As a DWH QA Engineer, you will be responsible for ensuring the quality, accuracy, and reliability of data in a data warehouse system. This role involves testing ETL (Extract, Transform, Load) processes, data integration, and analytics/reporting systems to ensure they meet business and technical requirements. You will be involved in defining the QA processes that the team uses. You will be working as a part of agile teams on all SDLC phases. As a person, you are proactive, open-minded and want to challenge yourself to learn and develop further.

Requirements

• Validate data transformations, mappings, and business logic during ETL and streaming data integration processes.
• Perform data reconciliation between source and target systems.
• Conduct comprehensive data quality checks to ensure accuracy, consistency, and completeness.
• Identify and resolve data loading issues and discrepancies.
• Validate job scheduling, triggers, and error handling in ETL and data integration streaming workflows.
• Execute functional testing of data warehouse solutions against business requirements.
• Ensure system compliance with data governance and regulatory standards.
• Develop automated testing frameworks and scripts for data validation.
• Use tools or custom scripts for repetitive testing tasks.
• Support PO's to break down epic stories into sizeable development chunks to ensure there is a stream of smaller tasks available for testing.
• Work closely with data engineers, analysts, and business stakeholders to understand requirements and resolve issues.
• Provide clear documentation of test cases, results, and defect tracking.
• Coordinate test activities during different phases of the project
• Assist in planning and controlling the test environment to make sure test environments are in healthy condition for test activities
• Communicate with all stakeholders to report the status of the test and to highlight any issues that might hamper the release

About You

• Excellent command of written and spoken English
• Hands-on testing (UI, Usability, Functional and Integration, BI)
• Data analysis and reconciliation of data between source and target reporting layers
• Experience of running the manual test tasks from the project start to finish. Reporting on progress in line with the processes and escalating issues and risks where appropriate
• Experience in the creation of test strategies with focus and maintenance of quality standards and validation techniques
• Experience with JIRA or similar test management tools
• Experience working in agile methods like SCRUM / KANBAN
• Working experience in relational databases; SQL preferred
• No military obligation for male candidates

Desired Skills:

• Proficiency in SQL for querying and validating data. 
• Familiarity with ETL tools.
• Knowledge of cloud-based data warehouses (e.g. BigQuery)
• REST-API testing using Postman / SoapUI / REST-ASSURED or any other similar frameworks
• Hands-on experience with test management and defect tracking tools (e.g., Jira, TestRail).
• Understanding of Cypress and Selenium test automation frameworks.
• Experience in complex systems with several external integrations, multiple languages and currencies
• Strong problem-solving and data analysis abilities.
• Detail-oriented with a focus on data accuracy and consistency.
• Strong organisational skills and ability to manage multiple tasks.
• We expect you to have at least 5 years of working experience.

• No restriction to travel abroad.
  So what can you expect from ComeOn as a place of work?
• A competitive remuneration package inc. a company bonus scheme! 💰
• Fantastic quarterly team events and weekly company events 😎
• A one-time bonus to help you set up a comfortable workstation at home (we’re truly Hybrid!)
• On top of our Hybrid work arrangement, up to 40 days a year to work fully remote from anywhere 🌎
• Karta Multisport
• Private health insurance

At ComeOn, we've embraced a Hybrid Work model, giving our employees the flexibility to work some days at home. Our offices are thoughtfully designed to support this model, featuring practical workspaces for focused efforts and collaborative zones for dynamic creative exchanges. We believe in the power of collaboration to drive innovation and success. While our offices are known for their vibrant atmosphere, rest assured that our primary focus is on achieving results together. We prioritize efficiency and maintain a balance between hard work and camaraderie. When you visit our offices, expect a warm welcome and professional support. Choose ComeOn for your next career move, and experience a workplace that values productivity, teamwork, and the spirit of collaboration.

At ComeOn Group we value diversity, and we take concrete action to ensure fairness in our recruitment process. We are committed to assess candidates on their merit without discriminating against any applicant for whatever reason that is protected by law. We truly value you, as you are. Want to know more about us just visit our website www.comeon-group.com or any of our social media channels to take a deep dive into our culture!

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