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Job Description: ETL Tester Role Overview We are seeking a detail-oriented ETL Tester to validate and ensure the accuracy, performance, and reliability of data extraction, transformation, and loading processes. The ideal candidate will have robust expertise in ETL tools, SQL, and data warehousing concepts, with experience in testing large-scale data pipelines across diverse domains. Key Responsibilities Data Validation: Verify data accuracy, completeness, and consistency between source and target systems. ETL Workflow Testing: Test extraction, transformation, and loading processes across multiple environments. SQL Querying: Write complex queries, joins, and stored procedures for validation. Performance Testing: Assess ETL job efficiency, scalability, and load handling. Error Handling: Identify and resolve data mismatches, duplicates, and transformation issues. Collaboration: Work closely with data engineers, BI developers, and QA teams to ensure data quality. Documentation: Maintain test cases, defect logs, and validation reports. Required Skills & Experience Hands-on experience with ETL tools (Informatica, Talend, DataStage, SSIS, etc.). Solid SQL skills for data validation and analysis. Solid understanding of data warehousing concepts (star schema, snowflake schema, fact/dimension tables). Familiarity with databases (Oracle, SQL Server, MySQL, NoSQL). Knowledge of scripting languages (Python, Shell, Perl) for automation. Experience with BI tools (Tableau, Power BI, Cognos) for validation reporting. Preferred Qualifications Exposure to healthcare, finance, or retail domains where compliance is critical. Awareness of data privacy regulations (GDPR, HIPAA). Experience with MLOps or cloud platforms (AWS, Azure, GCP) for data pipeline testing. .
Here's how to pick the right one and stand out in your application.
144.883Jobs
31.687IN
81%EN
That number is real. WorkMundi's database shows 144,883 open engineer roles across the world. India has the most with 31,687 jobs, followed by the United States with 30,084. If you just finished reading one job ad and felt paralyzed by choice, you're not alone—but this scale is actually an advantage. It means you can afford to be selective.
Start by geography and language. The majority of engineer ads—117,837 of them—have the job posting text written in English. Use that as one filter, but remember: the ad text language tells you nothing about whether the role actually requires you to speak English day-to-day. Read the job description carefully. Then check which countries have the volume you're targeting. Singapore, Poland, and Australia round out the top five after India and the US.
Next, learn who's hiring. Accenture has posted 2,801 engineer roles. andurilindustries, speechify, and jobgether are also actively recruiting. If you're applying to one of these names, research their hiring patterns and interview style before you apply. That homework pays off.
When you interview, expect the question every engineer hears: 'Tell me about a time you had to debug a problem that wasn't in your job description.' Have a specific story ready—not a general one. Name the tools, the deadline pressure, and what you learned. Hiring managers listen for whether you see problem-solving as part of the role itself, not a favour.