Andrei Karalevich

Sr Software Engineer @SearchStax

El Segundo, CA, US

Led the refactoring and migration of a legacy codebase, modernizing architecture and eliminating performance bottlenecks to significantly improve core web vitals (FCP, LCP, FID, CLS). Reduced initial load time from 5s to 1.5s, optimized the application bundle to under 300 KB, and improved First Contentful Paint by 35%, Largest Contentful Paint by 40%, and Cumulative Layout Shift by 50%, resulting in faster load speeds and a smoother, more responsive user experience.• Optimized API requests by eliminating redundant calls and implementing efficient data fetching and caching strategies, resulting in lower operational costs and a faster experience for customers.• Led the development of design systems in collaboration with UX designers, refining interactive UI components based on usability testing and user feedback.• Achieved WCAG 2.1 AA accessibility compliance across 100% of core user flows, significantly improving user experience for assistive technology users.• Prototype and built an internal library of 40+ reusable components, accelerating development and ensuring UI consistency across the application.• Developed and maintained core npm UI libraries: searchstudio-ux-js, searchstudio-ux-react, searchstudio-ux-vue, enabling seamless integration of SearchStax Site Search across applications.

Belarusian National Technical University

Master of Engineering - MEng