Sr Tech Data Validation & DBT Engineer

NTT DATA, Inc.; Bengaluru; On-site; INR 1,200,000 - 2,400,000; Full time

Job summary

NTT DATA, Inc. seeks a Senior Technical Data Validation Engineer for the Data Warehouse Modernization program in Bengaluru. You will validate migrated data pipelines, perform source-to-target reconciliation, and partner with development teams to accelerate defect resolution.

The role requires strong expertise in DBT, Snowflake, ETL concepts, SQL-based reconciliation, and Informatica workflows, with the ability to analyze complex data issues and provide actionable diagnostics.

Qualifications

• 7+ years of experience in Data Warehouse, ETL, Data Engineering, or Data Validation.
• 2+ years of hands-on experience with DBT (Core or Cloud).
• Strong experience in Data Warehouse Migration / Modernization programs.
• Experience supporting SIT or large-scale data validation initiatives.
• Developer-level understanding of Informatica mappings, workflows, and transformations.
• Experience working with Snowflake and modern cloud data platforms.
• Good communication skills and ability to read/understand existing ETL logic and requirements documentation.

Responsibilities

• Perform end-to-end source-to-target data validation across Informatica and DBT-based implementations.
• Validate data completeness, accuracy, transformations, aggregations, and business rules across staging, core, and mart layers.
• Execute record count, aggregate, reconciliation, SCD, and incremental-load validation.
• Analyze data discrepancies and identify root causes before routing defects to development teams.
• Prepare SQL evidence, impacted records, and detailed defect diagnostics to improve defect quality and reduce turnaround time.
• Participate in SIT defect triage sessions and collaborate with development teams to accelerate issue resolution.
• Validate data lineage and trace data flow across source systems, DBT models, and Snowflake objects.

Skills

DBT

Snowflake

ETL

Data Warehouse

SQL

Informatica

Data Validation

Data Migration

Tools

Informatica

Job description

Senior Technical Data Validation & DBT Engineer (ETL Modernization)

The Senior Technical Data Validation Engineer will play a critical role during System Integration Testing (SIT) for the Data Warehouse Modernization Program. The role is responsible for validating migrated data pipelines, performing source-to-target reconciliation, identifying root causes of data discrepancies, and partnering with development teams to accelerate defect resolution.

The ideal candidate should possess strong expertise in DBT, Snowflake, ETL/Data Warehouse concepts, SQL-based reconciliation, and legacy Informatica workflows, with the ability to independently analyze complex data issues and provide actionable defect diagnostics.

Roles & Responsibilities:

• Perform end-to-end source-to-target data validation across Informatica and DBT-based implementations.
• Validate data completeness, accuracy, transformations, aggregations, and business rules across staging, core, and mart layers.
• Execute record count, aggregate, reconciliation, SCD, and incremental-load validation.
• Analyze data discrepancies and identify root causes before routing defects to development teams.
• Prepare SQL evidence, impacted records, and detailed defect diagnostics to improve defect quality and reduce turnaround time.
• Participate in SIT defect triage sessions and collaborate with development teams to accelerate issue resolution.
• Validate data lineage and trace data flow across source systems, DBT models, and Snowflake objects.

DBT & Data Engineering Support

• Translate Informatica mappings, transformations, and business rules into DBT models where required.
• Develop and maintain DBT tests (schema tests, custom tests, data-quality validations).
• Design and implement staging, core, and mart layers using DBT best practices.
• Participate in performance analysis and optimization of DBT models and Snowflake queries.
• Support deployment validation and migration activities across environments.

Quality & Governance

• Contribute to SIT strategy, test case reviews, and validation frameworks.
• Ensure defects are documented with clear root-cause analysis, business impact, and remediation recommendations.
• Support regression testing and release validation activities.
• Maintain validation documentation, reconciliation reports, and testing evidence.

Experience & Skills

• 7+ years of experience in Data Warehouse, ETL, Data Engineering, or Data Validation.
• 2+ years of hands-on experience with DBT (Core or Cloud).
• Strong experience in Data Warehouse Migration / Modernization programs.
• Experience supporting SIT or large-scale data validation initiatives.
• Developer-level understanding of Informatica mappings, workflows, and transformations.
• Experience working with Snowflake and modern cloud data platforms.
• Good communication skills and ability to read/understand existing ETL logic and requirements documentation.

Must Have:

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