As a Senior Tester, you will own quality across one of the most complex data migration programmes in the financial sector — ensuring that every byte of data moved from Teradata to Snowflake is accurate, complete and production-ready. Your rigour will define the programme's success.
HIGH QUALITY PROJECTS | LATEST TECHNOLOGIES | REMOTE WITHIN SPAIN | LEARNING & GROWTH
ABOUT THE ROLE
We are seeking an experienced Senior Tester to lead the end-to-end testing strategy for a large-scale Teradata-to-Snowflake migration in the banking sector. You will define test coverage, build and execute test plans, drive automation, and act as the quality gate for ETL pipelines, data reconciliation and cutover readiness. This is a senior, client-facing role with responsibility for mentoring junior testers and reporting quality metrics to programme leadership.
KEY RESPONSIBILITIES
· 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 (IDMC preferred).
· 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.
REQUIRED SKILLS & EXPERIENCE
· Extensive ETL and data warehouse testing experience on large-scale migration programmes.
· Strong SQL skills 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.
Nice to have:
· Scripting skills in Python or Shell/PowerShell for test automation.
· CI/CD and DevOps exposure applied to data pipeline testing.
· BFSI domain experience.
What we offer
- The chance to work with impact. Here, you’re empowered to bring your biggest thinking to help our company and clients improve everyday life.
- Ownership over your career. Stay at the top of your game through our award-winning learning and development ecosystem. And when your ambitions change or we offer new opportunities, we help you pivot by providing reskilling, on-the-job learning and guidance to find new roles that might be a better fit.
- The opportunity to thrive on a high caliber team with heart. We celebrate each other’s experiences and perspectives and promote a sense of belonging through our affinity groups and diversity and inclusion initiatives.
- A comprehensive total rewards package, including a competitive salary and a pension plan with matching contributions.
- Flexible health and financial benefits to support you and your eligible dependents—from day one.
- True work-life balance. Be at your best through paid time off, flexible work arrangements, volunteering opportunities, social events, and so much more.
About us
Cognizant (Nasdaq: CTSH) is an AI Builder and technology services provider, building the bridge between AI investment and enterprise value by building full-stack AI solutions for our clients. Our deep industry, process and engineering expertise enables us to build an organization’s unique context into technology systems that amplify human potential, realize tangible returns and keep global enterprises ahead in a fast-changing world. See how at www.cognizant.com or @cognizant.
Other employment-related information
Cognizant is an equal opportunity employer. Your application and candidacy will not be considered based on race, color, sex, religion, creed, sexual orientation, gender identity, national origin, disability, genetic information, pregnancy, veteran status or any other characteristic protected by federal, provincial or local laws.
If you have a disability that requires reasonable accommodation to search for a job opening or submit an application, please email [email protected] with your request and contact information.
Language requirements vary depending on roles, but we ask that all candidates have basic English proficiency for company-wide communications purposes. For roles based in Quebec, professional English proficiency is required, as you’ll deliver services to and collaborate with stakeholders outside the province who may not speak French.
