Lead Data Quality Engineer

EPAM Systems; Brasil; On-site; BRL 260,000 - 380,000; Full time

Job summary

EPAM Systems seeks a Lead Data Quality Engineer to drive data validation, SQL-based testing, and quality automation across cloud environments. You will verify complex transformations, ensure cross-system consistency, and support migrations and deployments in modern data ecosystems.

The role requires 5+ years in data quality engineering, hands-on SQL, PySpark, and experience with BigQuery, Redshift, or Synapse Analytics, plus cloud service familiarity (AWS/Azure/GCP).

Qualifications

• 5+ years of experience in Data Quality Engineering.
• Expertise in SQL, including complex joins across multiple tables and large datasets.
• Hands-on experience with cloud data warehouses such as BigQuery, Redshift, or Synapse Analytics.
• Working knowledge of cloud platform services across AWS, Azure, or GCP.
• Understanding of data validation practices and automated data comparison techniques.
• Background in data transformation, validation, and mapping verification using specifications.
• Capability to understand and work with PySpark-based quality frameworks.
• Strong data analysis and debugging skills, with an ability to identify defects in data processing pipelines.
• Excellent written and verbal communication skills.
• Upper-Intermediate English proficiency (B2).

Responsibilities

• Execute QA validation for bulk data products within the data exchange ecosystem.
• Validate match and append processes and ensure correct deployment into data pipelines.
• Provide QA support for data platform migrations, ensuring data integrity and functional correctness.
• Verify data products and data fulfillment processes for accuracy and completeness.
• Perform data validation and comparisons across systems, including source input files to cloud data warehouse tables, table-to-table checks, and confirmation of data mappings and transformations against specifications.
• Use and enhance quality check frameworks built with PySpark scripts to automate data validation.
• Investigate defects through data analysis, identifying root causes in data pipelines or transformation logic.
• Collaborate with engineering and data teams to triage issues, validate fixes, and confirm production readiness.
• Contribute to test automation for data validation and testing to increase efficiency and coverage.
• Communicate findings, risks, and test results clearly to stakeholders.

Skills

SQL

PySpark

Data Validation

Data Quality

Tools

BigQuery

Redshift

Synapse Analytics

AWS

Azure

GCP

Job description

We are seeking a Lead Data Quality Engineer to drive rigorous data validation, SQL-based testing, and quality automation across cloud data environments. You will verify complex transformations, ensure consistency across multiple systems, and support migration and deployment work within modern data ecosystems. Join a distributed team focused on trustworthy datasets and apply today.

Responsibilities

• Execute QA validation for bulk data products within the data exchange ecosystem
• Validate match and append processes and ensure correct deployment into data pipelines
• Provide QA support for data platform migrations, ensuring data integrity and functional correctness
• Verify data products and data fulfillment processes for accuracy and completeness
• Perform data validation and comparisons across systems, including source input files to cloud data warehouse tables, table-to-table checks, and confirmation of data mappings and transformations against specifications
• Use and enhance quality check frameworks built with PySpark scripts to automate data validation
• Investigate defects through data analysis, identifying root causes in data pipelines or transformation logic
• Collaborate with engineering and data teams to triage issues, validate fixes, and confirm production readiness
• Contribute to test automation for data validation and testing to increase efficiency and coverage
• Communicate findings, risks, and test results clearly to stakeholders

Requirements

• 5+ years of experience in Data Quality Engineering
• Expertise in SQL, including complex joins across multiple tables and large datasets
• Hands-on experience with cloud data warehouses such as BigQuery, Redshift, or Synapse Analytics
• Working knowledge of cloud platform services across AWS, Azure, or GCP
• Understanding of data validation practices and automated data comparison techniques
• Background in data transformation, validation, and mapping verification using specifications
• Capability to understand and work with PySpark-based quality frameworks
• Strong data analysis and debugging skills, with an ability to identify defects in data processing pipelines
• Excellent written and verbal communication skills
• Upper-Intermediate English proficiency (B2)

Nice to have

• Proficiency in Python or PySpark development
• Background in data engineering or data pipeline testing environments

EPAM is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, age, sexual orientation, gender identity or expression, disability, protected veteran status, or any other characteristic protected by applicable law.