Stan Golembivskii

Framework-Agnostic UI Architecture: Migrated legacy Angular based components to a modern architecture using StencilJs. Created new, company-specific components from scratch, enabling seamless consumption by 20+ internal engineering teams operating on diverse React and Angular stacks. High-Performance Component Engineering: Developed complex UI components, including a robust multi-select dropdown handling 6,000+ items. Engineered a custom virtual scrolling utility and implemented a prefix-tree data structure for ultra-fast search, entirely eliminating browser UI lags. Technical Leadership & Support: Acted as a cross-pillar consultant, performing deep-dives into various internal React and Angular codebases to ensure compatibility, resolve integration issues, and ensure UI consistency. Workflow Optimization & Tooling: Led the development of a comprehensive Storybook workshop for component visualization and interactive testing, reducing manual QA time by 30%. Leveraged AI tooling (Claude Code, GitHub Copilot) to accelerate daily development. Internal App Development: Served as an architectural expert for internal Angular and RxJS-based applications and independently built automation tools for operational support.

•ReactJS Architecture: Architected and built a ReactJS web client from the ground up for on-demand delivery management, successfully replacing a legacy backend built-in framework solution. •Full-Stack Integration: Integrated complex business logic leveraging Google Maps API and RxJS, achieving a 45% performance improvement over the previous system. •Backend Maintenance: Maintained and developed new features for the underlying CUBA (Jmix) based backend application.

• Enterprise Full-Stack Leadership: Engineered secure middleware and implemented a robust spa architecture with dedicated bff for a large-scale enterprise booking platform serving premium business clients. • Legacy Modernization: Spearheaded the migration of legacy JavaScript components to a modern Angular frontend, resulting in an 18.4% increase in client-side application performance. • Advanced UI Engineering: Developed a specialized pricing visualization utility using Cytoscape.js, engineering a custom "virtual DOM" analogy to handle large-scale interactive graph manipulations without UI lag. • Data & Infrastructure Optimization: Optimized complex PostgreSQL and Sybase SQL queries, reducing database fetch times by 50%. Redesigned TeamCity CI/CD configurations, increasing deployment speed by 70% and decreasing build failures by 12.4%. • Angular UI Component Library: Proposed, designed, and developed a comprehensive Angular-based UI library from scratch, establishing design consistency across more than 10 different projects and multiple engineering teams. • Logistics Portals: Led the full-stack development (Angular, Java Spring MVC, REST API) of driver and supplier management portals featuring custom pricing, self-allocation logic, and i18n support.