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N-iX Logo N-iX · IT - Software Development

Middle QA Big Data

Ukraine · Job Posted January 05, 2026
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Job Description

The objective of this project is to enhance the QA processes through the implementation of automation within the Data landscape. This includes developing and maintaining regression testing suites, and creating test scripts and automation plans to improve the overall efficiency and quality of data testing practices.

Job Responsibility

  • Design and execute data validation tests to ensure completeness in Azure Data Lake Storage (ADLS), Azure Synapse, and Databricks
  • Verify data ingestion, transformation, and loading (ETL/ELT) processes in Azure Data Factory (ADF)
  • Validate data schema, constraints, and format consistency across different storage layers
  • Conduct performance testing on data pipelines
  • Optimize query performance by working with data engineers
  • Identify, log, and track defects in JIRA
  • Collaborate with Data Engineers and Business Analysts to resolve data inconsistencies
  • Generate detailed test reports, dashboards, and documentation for stakeholders

Requirements

  • 3+ years of QA experience with a strong focus on Big Data testing, particularly with hands-on experience in Data Lake environments on any cloud platform (preferably Azure)
  • Experience with Azure
  • Hands-on experience in Azure Data Factory, Azure Synapse Analytics, or similar services
  • Proficiency in SQL, capable of writing and optimizing both simple and complex queries for data validation and testing purposes
  • Experienced in PySpark, with experience in data manipulation and transformation, and a demonstrated ability to write and execute test scripts for data processing and validation (ability to understand the code and convert the logic to SQL)
  • Hands-on experience with Functional & System Integration Testing in big data environments, ensuring seamless data flow and accuracy across multiple systems
  • Knowledge and ability to design and execute test cases in a behavior-driven development environment
  • Fluency in Agile methodologies, with active participation in Scrum ceremonies and a strong understanding of Agile principles
  • Familiarity with tools like Jira, including experience with X-Ray for defect management and test case management
  • Proven experience working on high-traffic and large-scale software products, ensuring data quality, reliability, and performance under demanding conditions

Nice to have

  • Familiarity with database administration and optimization techniques
  • Experience with Databricks

What we offer

  • Flexible working format - remote, office-based or flexible
  • A competitive salary and good compensation package
  • Personalized career growth
  • Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)
  • Active tech communities with regular knowledge sharing
  • Education reimbursement
  • Memorable anniversary presents
  • Corporate events and team buildings
  • Other location-specific benefits
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