ETL TESTER

ETL TESTER

Location

San Antonio, TX

Exp : 7+

Job Summary

To plan, deploy and manage the testing effort/work plans for the project [module] to meet the client /internal requirements as per the quality standards prescribed.

Key Responsibilities

• To participate in functional as well as technical discussions with the client /team to understand functional /design specifications ,highlight performance concerns, inconsistencies ,prepare automated test scripts,maintain test case suite,ensure the appropriate test environments and infrastructures are in place/kept upto date.
• To develop and continuously improve automated tests as new system features/ enhancements are developed and accordingly create work plans| monitor and track the work schedule for on time delivery as per the defined quality standards.
• To create reusable /scalable test automation framework, develop test strategies/plans, maintain test data and to submit status reports for minimizing exposure and risks on the project or closure of escalations.
• To develop/guide and mentor QA engineers in the use of the testing framework , enhancing their technical capabilities and increasing productivity.

Additional requirement

Tech Stack

ETL testing Informatica PowerCenter, dbt Data Build Tool, SQL, Snowflake , Git, JIRA

Responsibilities

1 . QA Strategy and Planning

• Define QA strategy for a hybrid ETL stack involving Informatica, and dbt for transformationmodeling.
• Analyze STTMs (SourcetoTarget Mapping documents), business rules, and dbt model definitions to derive test scope.
• Plan and manage test phases across

Program Increments (PIs) or releases

unit testing support, system testing, integration testing, and UAT support.

2 . Informatica-Specific QA Responsibilities

• Review and validate Informatica mappings, workflows, sessions, and parameter files.

Validate

o Source data extraction (flat files, RDBMS, mainframes, etc.)

o Data transformations via mappings (joins, lookups, aggregations, filters, etc.)

o Load strategies to stagingODS layers (insert/update strategies, truncate/load, CDC).

• Use SQL queries and data comparison tools to perform reconciliation and transformation validation.
• Validate job dependencies and control table mechanisms (if used).
• Monitor job runs via Informatica Monitor/Workflow logs, and ensure correct execution paths.
• dbt-Specific QA Responsibilities
• Validate dbt models, tests, and documentation in the analytics layer.

Review and test

o Model SQL logic for business rule accuracy and performance

o YAML files for correct metadata and testing configurations

o dbt tests (unique, not null, accepted values, relationships, custom tests)

• Execute dbt test suites using dbt test and investigate failures.
• Collaborate with analytics engineers to validate , materialization strategies (table, view, incremental), and source freshness logic.
• Review generated SQL in target/compiled to ensure correct transformations.
• Data ValidationReconciliation
• Perform full and sampled data validation across source ? staging ? ODS ? analytics data layers.
• Write complex SQL queries to compare record counts, aggregates, and field-level data across layers.
• Ensure data consistency and integrity using both manual validation and dbt tests.
• Validate PII masking and data obfuscation where applicable.
• Automation and DevOps Integration
• Build and maintain reusable SQL-based test automation scripts for recurring validations.
• Integrate QA checks in CI/CD pipelines using git Actions.
• Monitor and validate Informatica batch schedules and dbt Cloud jobs (or CLI triggers).
• Contribute to QA dashboards and test reporting automation.
• Defect ManagementReporting
• Log and track defects in JIRA, categorize by layer (Informatica/dbt), and severity.
• Facilitate daily defect triage calls with data engineering teams.
• Provide detailed test execution status reports and test coverage metrics by data domain.