Vadim B.

Senior React/TypeScript developer with 6+ years building production SaaS and CRM systems. $50K+ earned on Upwork, 2,200+ tracked hours, two long-term contracts with 5-star ratings. Recent: Led frontend architecture of ELibrary — three-app ecosystem in Nx monorepo (React + Next.js) serving 10,000+ users. Built drag-and-drop form designer, real-time chat, payment integration, i18n. Reduced deployment time from 2 hours to 15 minutes and integration bugs by ~60% through type-safe API clients. Before that: Designed frontend for LifeCRM (Turkcell Group), a telecom CRM used by 500+ internal users daily. Reduced initial load time by 60%. Built reusable component library, added PWA support, mentored team of 5. What I do: • Architect React/Next.js apps from scratch — monorepos, CI/CD, Docker • Fix slow apps: code splitting, lazy loading, memoization, memory leaks • Build complex UI: data tables, forms, drag-and-drop, real-time features • Full-stack when needed: Node.js/NestJS, REST APIs, database design Stack: React 19, TypeScript, Next.js 16, Nx, Ant Design, WebSocket, Docker, Jest... Available 40 hrs/week. Clear communication, timezone-flexible. 🚀