Data QA Engineer – Enterprise Data (Brazil)

About the role

Truelogic is seeking a meticulous Data QA Engineer to ensure the integrity, accuracy, and reliability of complex enterprise data ecosystems for a leading technology client. You will validate ETL pipelines, verify data migrations, and confirm that transformed data aligns with business logic before it reaches analytical layers and decision‑makers.

Key responsibilities

• Validate ETL processes, referential integrity, constraints, and data normalization to guarantee data accuracy and completeness.
• Perform functional testing on core database objects such as stored procedures, triggers, views, and functions.
• Write complex SQL queries to verify data correctness during migrations and system integration.
• Test data pipelines, transformations, and business logic within Tableau and Power BI reporting tools.
• Develop and maintain automated test scripts for regression and integration testing of databases.
• Identify slow‑running queries, analyze execution plans, and collaborate with DBAs to optimize indexing and performance.
• Track defects using JIRA or TestRail and promote data‑quality best practices across development teams.

Required profile

• Proven experience validating ETL/ELT pipelines and complex data warehousing solutions.
• Strong analytical mindset with a focus on data integrity and troubleshooting.
• Ability to work closely with developers, data analysts, and product teams.

Required skills

• Advanced SQL query writing and execution.
• ETL/ELT pipeline validation.
• Test automation for databases.
• Query optimization and indexing.
• Tableau and Power BI for data verification.
• JIRA and TestRail for defect tracking.