Leading QA efforts within a fast-paced remote team at one of the largest betting and gaming platforms in Eastern Europe. Driving end-to-end test coverage across a complex microservices architecture, validating communication systems, and running A/B test validation to assess feature impact on user behaviour. Actively involved in cross-functional collaboration with business analysts, product owners, and developers to align requirements and maintain quality standards across every sprint.

• Informally led QA team operations, onboarding new members and providing day-to-day mentorship to ensure consistent testing quality across sprints
• Drove alignment between QA, business analysts, and product owners through regular requirement review sessions, reducing ambiguity before development kickoff
• Designed and owned end-to-end test coverage strategy across functional, regression, integration, and smoke testing cycles
• Evaluated microservices architecture across multiple services, verifying seamless inter-service communication and data consistency
• Executed A/B test validation to assess feature impact on user behaviour and platform performance
• Investigated and analyzed communication system failures, identifying root causes and contributing to delivery reliability improvements
• Built and maintained detailed test case libraries and checklists aligned with evolving product requirements
• Performed cross-platform and cross-browser testing ensuring consistent UI/UX across devices and environments
• Conducted REST API testing to verify endpoint behaviour, response integrity, and error handling
• Validated mobile application functionality across Android and iOS devices under various network conditions
• Maintained and configured testing environments to support parallel sprint testing cycles
• Reported and tracked defects in bug-tracking systems, facilitating resolution through structured bug-tracking meetings with internal stakeholders

Contributed to quality assurance for an edtech product, with a strong focus on test automation. Developed and maintained UI test suites using Python and Selenium WebDriver, systematically converting manual test cases into automated scripts. Worked closely with product and development teams to decompose requirements into testable scenarios, ensuring thorough coverage across functional, regression, and integration testing cycles.

• Developed and maintained automated UI test suites using Python and Selenium WebDriver, reducing manual regression effort significantly
• Identified automation opportunities within the existing manual test coverage and systematically converted priority test cases into automated scripts
• Collaborated with product owners and business analysts to decompose requirements into testable scenarios before sprint start
• Authored comprehensive test cases and checklists covering functional, edge case, and negative testing scenarios
• Executed full regression, integration, and smoke test cycles, documenting results and tracking coverage metrics
• Performed REST API testing via Postman, validating request/response contracts, authentication flows, and backend data integrity
• Conducted cross-platform, cross-browser, and UI/UX testing to ensure consistent product behaviour across environments
• Managed and maintained test environments for various testing scenarios, ensuring environment stability before test execution
• Logged, categorised, and tracked defects in bug-tracking systems, ensuring accurate status updates through to resolution
• Performed mobile application testing on Android and iOS platforms, covering functional and usability scenarios
• Reviewed functional requirements and technical documentation, flagging inconsistencies and potential gaps before development

Led QA processes across a full product ecosystem at one of Ukraine's largest electronics retailers — including an internally developed POS cashier application used by field sales staff and couriers, a high-traffic e-commerce web store, and iOS/Android mobile applications. Automated UI regression testing for the web store using Python and Selenium WebDriver. Collaborated with banking partners to ensure fiscalization compliance and partnered with cross-functional teams to maintain quality across all three products simultaneously.

• Led QA team, establishing testing processes, mentoring engineers, and ensuring smooth delivery across concurrent project streams
• Covered full product ecosystem: internally developed POS cashier application for field sales staff and couriers, e-commerce web store, and iOS/Android mobile applications
• Automated UI regression test scenarios for the e-commerce web store using Python and Selenium WebDriver, reducing manual testing overhead and accelerating release cycles
• Partnered with banking institutions to validate fiscalization compliance, ensuring the POS application met regulatory and financial reporting standards
• Facilitated requirement alignment sessions with business analysts and product owners, translating business needs into structured test plans
• Designed comprehensive test case libraries and checklists covering the full functional scope across all three products
• Executed functional, integration, regression, and smoketesting across all major application releases for web, mobile, and POS
• Performed REST API testing with Postman, verifying payment processing flows, data integrity, and backend reliability
• Conducted cross-platform, cross-browser, UI/UX, acceptance, and exploratory testing on the web store across supported browsers and environments
• Validated iOS and Android mobile application builds forfunctional stability, usability, and performance across device configurations
• Set up and maintained dedicated testing environmentssimulating real field usage conditions for couriers, retail staff, and end customers
• Identified, documented, and tracked defects through the full bug lifecycle using internal bug-tracking tools
• Reviewed technical documentation and functional specifications for all three products, ensuring clarity and completeness before test execution* Facilitated bug-tracking meetings with stakeholders, prioritising critical defects and coordinating timely resolution

Established QA coverage from the ground up for a web development agency, building test case libraries and checklists from scratch across multiple client projects. Focused on cross-platform, cross-browser, and mobile testing to ensure consistent product quality. Analysed application logs to support root cause analysis.

• Executed structured manual testing cycles including functional, integration, regression, and smoke testing across product releases
• Produced detailed test cases and checklists from scratch, establishing foundational test coverage for the project
• Validated test outcomes against functional requirements, documenting results systematically for traceability
• Performed cross-platform, cross-browser, and UI/UX testing to ensure visual and functional consistency across environments
• Verified mobile application stability and usability across Android and iOS devices
• Analysed application logs to identify root causes of failures and provide developers with actionable debug information
• Identified, documented, and escalated defects using bug- tracking systems, ensuring issues were prioritised and resolved promptly
• Reviewed technical documentation and functional requirements, identifying gaps and ambiguities before testing commenced* Configured and maintained testing environments to support diverse testing scenarios throughout the project lifecycle

Delivered QA across web and mobile products with a focus on functional stability and usability. Gained hands-on experience in game testing for mobile and web platforms, identifying gameplay bugs, performance bottlenecks, and stability issues. Worked within a structured Agile environment, contributing to bug prioritisation meetings and maintaining clear defect tracking through the full resolution lifecycle.

• Planned and executed manual test cycles covering functional, integration, regression, and smoke testing for web and mobile products
• Created detailed test cases and checklists tailored to product specifics, ensuring thorough scenario coverage
• Validated test execution results against system requirements, documenting outcomes for each release build
• Performed game testing across mobile and web platforms, identifying gameplay bugs, performance bottlenecks, and stability issues under load
• Conducted cross-platform, cross-browser, UI/UX, acceptance, and exploratory testing across target environments
• Tested mobile application builds on Android and iOS, assessing usability, performance, and functional stability
• Logged and tracked defects in bug-tracking systems, maintaining clear status updates through to resolution
• Participated in bug-tracking meetings, helping stakeholders prioritise issues based on severity and business impact

Gained foundational experience in large-scale QA at one of the world's largest online betting platforms, where quality standards and testing volume were exceptionally high. Covered the full manual testing spectrum across a high-traffic web and mobile product, conducted REST API testing with Postman, and developed detailed checklists ensuring broad scenario coverage. Contributed to structured defect resolution processes.

• Executed comprehensive manual testing cycles including functional, integration, regression, and smoke testing to validate product quality at scale
• Designed detailed checklists and test cases from requirements, ensuring broad scenario coverage across a high-traffic betting platform
• Verified test results against functional and business requirements, maintaining strict traceability between cases and outcomes
• Conducted REST API testing with Postman, validating backend data integrity, response accuracy, and authentication mechanisms
• Performed cross-platform, cross-browser, UI/UX, acceptance, and exploratory testing across a wide range of supported environments
• Validated mobile application behaviour on Android and iOS, focusing on performance, usability, and stability under real usage conditions
• Configured and maintained testing environments tailored to different testing needs and release scenarios
• Diagnosed application issues through log analysis, providing development teams with precise root cause information
• Reported and tracked bugs in the bug-tracking system, actively participating in prioritisation meetings with internal stakeholders
• Reviewed technical documentation and functional requirements, ensuring clarity, accuracy, and completeness before test execution