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October 13, 2026
Quality Assurance (QA) Lead Engineer
Mid • Remote
Warsaw, Poland
Quick Facts
Role: QA Lead Engineer for the CREST transformation program
Focus: Lead end-to-end testing for a migration from legacy systems to an event-based, service-oriented architecture
Ways of working: Agile, primarily testing with support for developers
Description
You will lead and deliver a coherent end-to-end testing solution for the CREST transformation programme, working within Scrum teams. The migration moves from legacy to event-based services, using Kafka/Event Hub integration, and requires both functional and non-functional testing. You will define test strategies, manage defects and risks, and build manual and automated test scenarios.
Responsibilities
Work in an Agile team to deliver migration of legacy applications to an event-based and service-oriented architecture
Deliver and lead an end-to-end testing solution covering functional and non-functional requirements
Establish estimation principles for migration phases and propose optimal test approaches
Write and present the Test Strategy; propose alternate approaches when needed
Peer review test scenarios and test cases; execute scenarios and cases
Manage defects effectively, challenge other teams, and perform required analysis
Review team deliverables for completeness, suitability, and accuracy; contribute to reporting
Identify and escalate risks/issues and propose mitigation actions
Facilitate discussions to extract information, devise test approach, and mitigate risks/issues
Requirements
ISEB/ISTQB Foundation Certificate in Software Testing
Strong analytical skills to extract and analyze relevant information from documentation, system data, and stakeholders
Ability to derive manual and automated test scenarios and cases from gathered information, documented to standards with traceability
Hands-on Object-Oriented Design and Java programming experience
Automation experience using Cucumber, Java, and ADS
Analytical and systems design/development skills for distributed, multi-platform solutions
Experience implementing Event Hub technology, especially Kafka and Kafka Streams
Database design skills (e.g., Oracle) and strength in implementing Java with SQL query work
Strong experience working in Agile environments with knowledge of BDD and TDD
Experience implementing Continuous Integration/Continuous Delivery pipelines using ADS
Understanding and experience of risk-based testing
Lead testing and define Test Strategy; present approaches to key stakeholders
Excellent defect management and peer review of test cases
Benefits
Opportunity to modernize and test a legacy-to-event-based architecture migration in an Agile delivery environment
Collaborative role with Scrum Teams, Solution Architect, Product Owner, Technical Lead, and application architects
Chance to grow into a T-shaped QA role by building broader business and technical knowledge across squad projects
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