Sergei Bakirov focused on enhancing the reliability of right-click menu feature tests in the epam/ketcher repository by refactoring the test structure to operate within an integrated canvas environment. Using TypeScript and front end development skills, Sergei transitioned isolated test runs into a cohesive, canvas-based workflow, which reduced test flakiness and improved determinism. This approach enabled faster and more reliable CI feedback on right-click menu behavior, while also increasing test coverage and maintainability. All changes were mapped to relevant project issues for traceability and alignment with product requirements, demonstrating a methodical and quality-driven approach to testing and feature stability.