Manish Singh
ETL Tester and Data Engineer
About
Results-driven ETL Tester and Data Engineer with 3+ years of hands-on experience validating end-to-end data pipelines, ensuring data integrity across multi-layered warehouse architectures, and delivering high-quality analytical solutions for global enterprise clients. Proven expertise in SQL, Snowflake, and Azure Databricks, with deep knowledge of ETL testing methodologies, Data Warehousing concepts, and dimensional modelling (SCD1, SCD2).
Skills & Expertise (13)
Work Experience
ETL Tester and Data Engineer
Apptad Inc
May 2023 - Present
Performed data validation and enrichment using Demandbase and LinkedIn to ensure the accuracy, consistency, and completeness. Validated company firmographics and contact information to improve data reliability. Created and maintained standardised reports and dashboards to track data accuracy, validation progress, and coverage across datasets.
Data Engineer
Sanofi Genzyme
Present - Present
Contributed to building and validating SGDW — an enterprise-scale Healthcare Data Warehouse. Performed end-to-end ETL validation across EXT, Staging, Dimension, and Fact layers. Wrote complex SQL queries for data reconciliation, count validation, null checks, duplicate detection, and MINUS-based completeness checks. Validated SCD Type 1 and SCD Type 2 dimensional load logic. Executed incremental load testing. Applied data modelling knowledge.
Data Engineer
Ecolab
Present - Present
Performed end-to-end ETL validation across EXT, Staging, Dimension, and Fact layers. Wrote complex SQL queries for data reconciliation, count validation, null checks, duplicate detection, and MINUS-based completeness checks. Validated SCD Type 1 and SCD Type 2 dimensional load logic. Executed incremental load testing.
Education
Bachelor of Technology in Electrical Engineering - Vivekananda Institute of Technology
- · Afghanistan
Certifications
No certifications added yet
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Need Sponsorship
Relocation
Open to Relocation
Skills (13)
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