• Identified and documented 200+ defects, including 25–30 high/critical issues, through manual, API, and exploratory testing, helping reduce the number of production issues over multiple releases.

• Created and maintained 400+ test cases in Xray/Jira, covering the majority of core user stories and improving clarity of requirements during development and testing phases.

• Performed REST API testing using Postman and basic JavaScript assertions across 15+ endpoints, identifying numerous data and logic inconsistencies prior to release.

• Contributed to test automation by developing and maintaining 60–70 Cucumber + Selenium scenarios, primarily for smoke and critical regression flows.

• Executed back-end data validation using MySQL queries during releases and post-deployment checks, supporting data consistency after updates and migrations.

• Participated in bug triage, backlog refinement, and sprint planning, helping prioritize defects and improve turnaround time for high-priority issues.

• Investigated and reproduced 80+ frontend and API issues using Chrome DevTools, logs, and request inspection, frequently providing developers with clear reproduction steps and root-cause hints.

• Assisted in stabilizing automated tests in Jenkins by analyzing flaky failures and improving test reliability, reducing noise in CI pipelines.

• Actively contributed ideas during retrospectives, with several suggestions adopted to streamline testing workflows and team collaboration.

• Directed nationwide service operations for Melsytech and Quanta System laser medical devices, leading a team of 4 field technicians and optimizing logistics across Russia, resulting in a 30% reduction in average response time to service calls.

• Optimized spare parts inventory control and replenishment processes for a nationwide network, increasing inventory turnover from approximately 4x to 7x annually while reducing stockouts by 35% and lowering excess inventory costs by 20%.

• Implemented structured technician training and issue resolution protocols, elevating first-time fix rate (FTFR) to over 85% and decreasing repeat service visits by 28%.

• Maintained exceptional customer satisfaction in healthcare facilities, consistently achieving an average CSAT score of 92% through rapid problem resolution and proactive post-service follow-up.

• Analyzed nationwide customer feedback and drove targeted process improvements, boosting overall service quality ratings by 18% and cutting escalated complaints by 40%.