Yuriy Vlasyuk

Migrated iframe-based page reloads to a postMessage-based architecture, improving data exchange between iframe and main app and reducing page load time by ~1.5 seconds (about 50%). Implemented automated user-authorization tests and end-to-end authentication flows, increasing E2E coverage to 65%. Retrieved a visually intuitive validation error interface to surface input issues, reducing related user support requests by 12%. Led version history refactor to improve reliability and traceability of changes. Added event logging across key application areas to support performance monitoring and UX analysis. Collaborated on a permissions-group management project to improve access control and role-based workflows. Authored multiple technical and design documents to support new application projects.

Implemented a data pre-load strategy for SPA by pre-loading essential data in the background before user interactions, reducing initial load time. Realized code-splitting and lazy-loading techniques to load only necessary components, significantly decreasing initial load time. Optimized application bundle size by identifying and eliminating unnecessary polyfills and redundant dependencies, resulting in a streamlined and efficient codebase. Engaged in detailed sprint planning and backlog grooming, refining user stories and breaking down complex tasks into manageable sub-tasks to sustain steady delivery pace throughout the PI. Developed 15+ core features for Angular and React-based applications, increasing product value. Improved code robustness and reliability by ensuring Jest-based unit test coverage for more than 20 application hooks and utilities.

Led the implementation of a BEM methodology to organize and simplify the development process, reducing UI-related bugs by 15%. Wrote unit and integration tests to ensure reliability and stability of the framework, reducing bug recurrence and improving overall code quality. Engaged in frequent code reviews, providing constructive feedback to team members and contributing to quality improvements. Developed multiple pixel-perfect UI components for the framework to enable reuse across corporate applications.