Middle/Senior Data Tester

Test Planning- Understand data requirements, workflows, and processes to define comprehensive testing scope- Control task, timeline and proactively report if problems occurs- Create test plans, test cases, test data and create SQL to validate data quality, data logic and integrity data.Test Execution- Perform testing of data migrations, data transformations, and integration to ensure accuracy and consistency- Validate data sets, reports, and dashboards to confirm that data aligns with business rules and expectations.- Execute both of manual and automated tests for database- Test large datasets for accuracy, completeness, and consistency across different platforms and service(e.g., SQL, NoSQL, etc.)- Conduct Regression Testing on updated ETL and existing ETL to identify any possible impacts caused by changes- Work closely with data engineers, business analyst, test team ... to understand data models and data requirements- Support the development team in troubleshooting and resolving data-related issuesDefect Management- Identify, document, and track data quality issues and defects using bug tracking systems (e.g., JIRA)- Collaborate with data engineers, business analyst to resolve identified issues- Assist in preparing and delivering reports on progress of testing services for squad and tribe leadsAutomation- Develop automated test scripts using tools like Python, SQL, or other data testing frameworks to reduce manual efforts