Tata Consultancy Services

ETL Tester

Tata Consultancy Services$100K — $120K *
Finance & Insurance
8 - 10 years of experience
Job Overview by Ladders

Qualifications

  • Minimum 10 years of experience in ETL testing
  • Strong expertise in SQL for data analysis
  • Proficient with ETL tools like Informatica and IDMC
  • Understanding of data warehouse concepts, including star/snowflake schemas
  • Experience with data validation tools such as JIRA or HP ALM
  • Familiarity with Hadoop or Spark is a plus
  • Knowledge of banking and payments domain preferred

Responsibilities

  • Analyze data mapping documents and design test plans
  • Perform data reconciliation to ensure correctness of transformations
  • Write and execute complex SQL scripts for data validation
  • Log and track data defects using industry-standard tools
  • Automate test scripts for performance and scalability validation
  • Validate file structures and data processing within Hadoop clusters
  • Collaborate effectively with developers and stakeholders

Benefits

  • Opportunity to engage with emerging technologies like Hadoop and Spark
  • Work in a data-centric environment focusing on quality and performance
  • Exposure to the banking and payments domain
  • Collaborative team environment fostering communication and problem-solving
  • Opportunity for professional growth in ETL and data testing expertise
Full Job Description
Must Have Technical/Functional Skills

Primary Skill: ETL testing

Secondary: ETL Testing, Autosys, SQL, Shell Scripting, Exposure to IDMC/Informatica

Experience: Minimum 10 years

Roles & Responsibilities
• Analyze data mapping documents and business requirements to design comprehensive test plans and cases.
• Perform source-to-target data reconciliation, check data loading, and ensure transformation rules are applied correctly.
• Write complex SQL scripts for validation (count, data completeness, data consistency, data truncation).
• Identify, log, and track data defects using tools like JIRA or HP ALM or Octane.
• Automate test scripts and validate data volume, performance, and scalability.
• Expert-level knowledge of SQL for data analysis.
• Experience with tools such as Informatica and IDMC.
• Understanding of data warehouse concepts and architectures (e.g., star/snowflake schema).
• Familiarity with Hadoop or Spark is often preferred.
• Validate HiveQL, HDFS file structures, and data processing within the Hadoop cluster.
• Strong analytical and troubleshooting skills.
• Excellent communication for collaborating with developers and stakeholders.
• Knowledge in Metadata dependent ETL process and batch/job framework

Tools & Skills:

IDMC, Informatica Power center, Hive, Kafka Knowledge

SQL, Oracle, PL/SQL

Domain: Banking knowledge, Payments knowledge preferred.

Concept: Data Warehousing, Data Transformation, ETL/ELT, Data Quality.

Salary Range- $100,000-$120,000 a year

About Tata Consultancy Services

Tata Consultancy Services (TCS) is an Indian multinational information technology (IT) services and consulting company, headquartered in Mumbai, Maharashtra, India. It is a subsidiary of Tata Group and operates in 149 locations across 46 countries. TCS is the largest Indian company by market capitalization and is ranked 11th on the Forbes Global 2000 list of the world's biggest public companies. TCS is also the second-largest IT services company in the world by revenue and the largest employer of women in India. The company provides services in areas including IT, consulting, and business solutions.
Learn more about Tata Consultancy Services
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