C

ETL Test Lead

Cognizant

toronto, on, Canada Full-time June 04, 2026
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Opportunity Description

Responsibilities

  • Full load vs Incremental / Delta load testing
  • Late Arriving Dimensions, Out-of-sequence data
  • Advanced SQL skills
  • Complex joins, subqueries, window functions
  • Data reconciliation & cross-layer balancing
  • Duplicate, null, referential integrity checks

Core Skills (Must Have)

  • Strong Data Warehousing & EDW concepts
  • Fact & Dimension modeling
  • Star / Snowflake schemas
  • Data marts and reporting layers
  • Hands-on EDW testing experience
  • Source → Staging → Integration → Presentation layer validation
  • Full load vs Incremental / Delta load testing
  • SCD validation expertise
  • SCD Type 1, Type 2 (history, effective dates, current flag)
  • Late Arriving Dimensions, Out-of-sequence data
  • Advanced SQL skills
  • Complex joins, subqueries, window functions
  • Data reconciliation & cross-layer balancing
  • Full-time Management & Operations

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