• Performed manual testing of mobile games on Android and iOS platforms Identified a critical defect in the microtransaction system, preventing incorrect in-game purchases
• Created test cases, bug reports and regression checklists Tested UI behavior across multiple devices and screen resolutions
• Verified builds before Google Play releases
• Tested gameplay mechanics, animations and performance (FPS stability)
• Helped improve game stability by identifying defects during gameplay and UI testing Implemented AI-powered test case writing technology, which increased the speed of documentation writing by 15%, and consequently, test completion.
• Suggested improving the game mechanics associated with microtransactions, which increased the company's revenue

Tested an internal enterprise system used by railway employees to manage schedules, logistics and train operations Participated in the full testing lifecycle from feature validation to release Created test cases and checklists for functional and UI testing Verified system workflows related to employee management, scheduling and operational processes Reported and reproduced defects in collaboration with developers Discovered a critical defect affecting critical system functionality Performed API testing using Postman to validate backend responses Used devtools to test the web portion of the functionality. Participated in release verification and regression testing Worked with Medology Scrum and used Jira. Conducted regression testing, smoke testing, and sanity testing