Open to opportunities

lazar kapsarov

@lazarkapsarov

Message

Frontend Engineer focused on Next.js/React performance, scalable component architecture, and WCAG-compliant UX.

North Macedonia

Message

What I'm looking for

I’m looking for a long-term full-time role focused on building components across codebases, with strong emphasis on frontend performance, scalable architecture, and WCAG 2.1 AA accessibility—delivering measurable business impact.

I’m a Frontend Engineer with 3+ years of shipping production React and Next.js systems, optimizing the entire user journey from rendering performance to reliability. I’ve reduced LCP from 5s to 1.5s, driving a 25% purchase conversion lift and cutting bounce rate by 20% on low-end mobile (CrUX-measured), including work on a retail platform’s rendering layer with zero production downtime.

I build modular React 19 component libraries for 3+ product teams—architecture that scales across teams, not just standardizing UI patterns. I introduced Playwright + Vitest test suites with 90%+ coverage, and rebuilt UI components to WCAG 2.1 AA standard across 2 client products while advising on SSR/ISR, caching, and observability; I’m looking for a long-term full-time component work across codebases.

Experience

Work history, roles, and key accomplishments

Current

Frontend Engineer (Contractor)

Current

Lazar Kapsarov

Oct 2021 - Present (4 years 6 months)

Rebuilt Next.js rendering performance to reduce LCP from 5s to 1.5s, driving a 25% increase in completed purchases and a 20% bounce-rate reduction on low-end mobile devices. Developed modular React 19 component libraries, delivered Playwright/Vitest test coverage of 90%+, and updated UI to WCAG 2.1 AA with zero production downtime.

Next.js React 19 TypeScript Performance Optimization Core Web Vitals (LCP)React Compiler Memoization Playwright Vitest WCAG 2.1 AA

Education

Degrees, certifications, and relevant coursework

Frontend Masters

Frontend Design System Program, Design Systems

2023 -

Built and documented a Turborepo/monorepo-driven frontend design system (CVA, Storybook, Vitest) with WCAG 2.1 AA considerations and CI using GitHub Actions. Program is ongoing.

Frontend Masters

Website Accessibility (WCAG 2.1), Web Accessibility

Completed the Website Accessibility credential focused on WCAG 2.1.

ITAcademy

Frontend Development Program, Frontend Development

2022 - 2023

Created a production-ready frontend library with full documentation and test coverage, including Button, Input, Badge, Card, Modal, and Toast components.