DWH Consultant, Budapest

Lab49 is looking for an DWH Consultant with extensive experience in developing and automating end-to-end test suites for data ingestion pipelines, data warehouses, data marts, and BI report. We seek a professional with the ability to visualize complex, high-volume data movement across multiple systems, design and execute tests for each transformation step, and possess strong SQL, ETL, and DWH testing skills. The ideal candidate is familiar with using a data-driven approach to create functional, data, and automated tests.

Working in a collaborative and innovative project team, with direct client-facing interactions, you will have an opportunity to apply your skills and expertise to automate data quality testing capabilities for applications that solve business problems and enhance performance for the clients. 

What you will do:

• Design, develop, and maintain automated test scripts for data pipelines, Datamart, Reporting data and BI reports. 
• Implement continuous integration and continuous deployment (CI/CD) pipelines for automated testing. 
• Validate data accuracy, completeness, and consistency across data ingestion and data warehouse processes. 
• Write SQL queries for testing end to end data flow which can eventually be used in automation. 
• Conduct performance and load testing for data ingestion and data warehouse systems to ensure scalability and reliability. 
• Set up and maintain test environments, including data sets, configurations, and tools required for testing. 
• Generate test reports, metrics, and dashboards to provide visibility into test progress and quality status. 
• Document test cases, test scripts, and test results for future reference and audit purposes. 
• Continuously improve testing processes, tools, and methodologies to enhance test efficiency and effectiveness. 
• Ensure testing processes comply with data governance, security, and regulatory requirements. 

Required experience and skills:

• 6-10 years of extensive experience in DWH development.
• Deep knowledge in BI Report Testing, ETL Testing, Data Analysis, end-to-end test automation and Data Mart/Data Warehouse Testing.
• Proficient in writing medium to complex SQL queries for test validation alongside development. 
• Develop and maintain automated test frameworks and suites for frontend, backend, and API testing. 
• Familiarity with CI/CD tools like Jenkins, Bamboo, or similar.
• Strong understanding of Test-Driven Development (TDD) and Behavior-Driven Development (BDD) methodologies. 
• Results-oriented and highly organized, capable of managing multiple priorities in a fast-paced agile environment. 
• Experience in Test Management and Defect Management, including test execution reporting, defect tracking, and regression testing for project releases. 
• Exceptional written and verbal communication skills, with experience working across different geographical locations and time zones. 

Desired experience and skills:

• Skilled in understanding and debugging Stored Procedures.
• Hands-on experience with AWS, including AWS Redshift, and MongoDB. 
• Experience with test automation tools like Playwright, Selenium, JUnit, TestNG, Appium, Jest, Mocha, etc.
• Expertise in creating and managing test data using stubs/drivers for GUI validation when real test data is unavailable. 
• Experience with security testing to identify and mitigate potential vulnerabilities in data systems.
• Salesforce Object Query Language (SOQL) and experienced with Salesforce CRM. 
• Experience within the financial domain is a plus.

Lab49/ION is committed to maintaining a supportive and inclusive environment for people with diverse backgrounds and experiences. We respect the varied identities, abilities, cultures, and traditions of the individuals who comprise our organization and recognize the value that different backgrounds and points of view bring to our business.

Lab49/ION adheres to an equal employment opportunity policy that prohibits discriminatory practices or harassment against applicants or employees based on any legally impermissible factor.