Experteer Overview
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Senior Tester leading the end-to-end quality for a complex Teradata-to-Snowflake data migration in the banking sector. You will define test strategy, create and run plans, drive automation, and serve as the quality gate for ETL pipelines and data reconciliation. You will mentor junior testers and report quality metrics to programme leadership in a client-facing capacity. You enable production-ready data and robust cutover readiness.
Compensaciones / Ventajas
• Define the overall test strategy, scope and coverage framework for the Teradata to Snowflake migration
• Create, maintain and execute test plans and test cases for ETL pipelines and data validation
• Perform source-to-target reconciliation; validate transformations, mappings, business rules and referential integrity
• Test full and incremental data loads, error handling, regression scenarios and performance benchmarks
• Lead parallel run and cutover readiness testing activities




• Track and report defects and quality metrics using JIRA and/or HP ALM
• Collaborate with data engineers, business analysts and business stakeholders throughout the test lifecycle
• Drive test automation for repeatable validation checks; support CI/CD integration of ETL tests
• Mentor and guide junior testers within the team
Responsabilidades
• Extensive ETL and data warehouse testing experience on large-scale migration programmes
• Strong SQL skills xqbhyrx across both Snowflake and Teradata environments
• Hands-on experience with Informatica IDMC (preferred) or PowerCenter
• Deep expertise in data migration testing: schema mapping, datatype conversions, SCD handling and star schema (fact/dimension) validation
• Experience with Snowflake on Azure
• Full test lifecycle ownership: SIT, Integration, UAT, parallel run and cutover
• Defect management and reporting using JIRA and/or HP ALM
Requisitos principales
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📌 Test Manager (Madrid)
🏢 Cognizant
📍 Madrid