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ETL Tester

Job in Bengaluru, 560001, Bangalore, Karnataka, India
Listing for: ThoughtFocus
Full Time position
Listed on 2026-02-04
Job specializations:
  • IT/Tech
    Data Engineer, Data Analyst, IT QA Tester / Automation, Data Warehousing
Job Description & How to Apply Below
Location: Bengaluru

About the Company
Thought Focus helps forward-looking companies and organizations in the financial services, manufacturing, and higher education/public services sectors innovate and achieve a better future faster. Clients rely on Thought Focus for domain expertise, innovation, modernization, and the creative use of emerging technologies. Dedication to client success, deep expertise in leading capabilities in business and technology transformation has been the cornerstone for success to our people, clients, partners and the planet.

The world’s most innovative and valuable companies work with Thought Focus for their transformation journeys. With headquarters in the U.S., the company has more than 3,000+ employees in locations spread across five countries. For more information, please visit the company website

Job Summary:

We are seeking a detail-oriented  QA Data Tester  to validate and ensure the accuracy, completeness, and quality of data across multiple systems and data pipelines. The ideal candidate will have strong experience in  ETL testing ,  data validation ,  data migration testing , and a solid understanding of  SQL ,  data warehousing concepts , and  cloud data platforms  (Azure Data bricks, Lakes).

Key Responsibilities:

Validate end-to-end data flows from source to target systems in ETL / data pipelines.
Perform  data integrity, transformation, and reconciliation testing .
Analyze large datasets using  SQL  or data tools to verify accuracy and business rules.
Work closely with data engineers, business analysts, and developers to understand requirements and define test cases.
Develop and execute  test plans, test cases, and test scripts  for data processes.
Identify, log, and track data defects using tools like  JIRA  or  Azure Dev Ops .
Participate in  UAT  and provide QA sign-off for data releases.
Perform regression and automation testing for recurring data validation needs.
Validate reports and dashboards (Power BI / Tableau / Looker) for accuracy against the data source.
Support  data migration  and  data quality initiatives  by performing root cause analysis on anomalies.

Required Skills &

Qualifications:

Strong experience in  SQL  and relational database testing (Oracle, SQL Server, Snowflake, etc.)
Hands-on experience in  ETL testing  (Informatica, Azure Data Factory, Talend, etc.)
Good understanding of  data warehousing concepts ,  dimensional modeling , and  data lakes .

Experience with  cloud platforms  (Azure, AWS, or GCP) – e.g., Data Factory, Databricks, Glue, Big Query.
Knowledge of  Python  or  PySpark  for data validation automation is a plus.

Experience with  data comparison  and  automation tools
preferred.
Strong analytical and problem-solving skills with attention to detail.
Excellent communication and documentation skills.

Preferred Qualifications:

Familiarity with  Agile / Scrum  methodology.
Exposure to  CI/CD  pipelines and testing integration.
Experience in  BI testing  (Power BI, Tableau).
Bachelor’s degree in Computer Science, Information Technology, or related field.
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