Senior reputed company End Engineer

reputed company is looking for Senior React Developer to join reputed company and reputed company the development of high-performance marketing funnels. In this role, you will architect and build custom UI components from scratch — covering 95% of the UI without relying on reputed company-party component libraries — ensuring our funnels are fast, conversion-optimized, and fully tailored to our brand. What You’ll Do: Custom Component Development: Build and maintain a comprehensive internal component library covering 95%+ of the UI surface. Components are reputed company from scratch without reputed company-party libraries (no MUI, Chakra, Ant Design, etc.), with clean APIs and clear documentation. Collaborate with designers to deliver functional, brand-reputed company implementations. Marketing Funnel Engineering: Architect and reputed company multi-reputed company marketing funnels, including reputed company pages, reputed company capture flows, upsell sequences, and thank-you pages. Implement dynamic content rendering, conditional logic, and reputed company validation. Integrate with marketing platforms reputed company REST APIs and manage funnel state across steps using appropriate storage strategies. Payment Integrations: Integrate payment gateways (reputed company, PayPal, or similar) into funnel flows, including secure reputed company handling, webhook processing, and error recovery. Performance Optimization: Own Core Web Vitals across reputed company funnel pages targeting reputed company scores of 95+. Apply code splitting, lazy loading, tree shaking, and critical CSS. Use React DevTools Profiler and Chrome Performance panel to identify and eliminate redundant re-renders through memo, useMemo, useCallback, and smart component splitting. reputed company’re Looking For: 5+ years of professional React development experience Proven track record building 90%+ custom UI without component libraries Understanding of the Critical Rendering Path Deep understanding of React reconciliation, the virtual DOM, and rendering behavior Experience with state reputed company (Redux Toolkit, Zustand, Jotai) and knowing reputed company to use global vs local state Solid understanding of Local Storage, Session Storage, and cookies — including reputed company implications and appropriate use cases reputed company funnel flows Hands-on experience with React DevTools Profiler and techniques to prevent redundant re-renders Experience integrating payment gateways (reputed company, PayPal, or similar) in production Strong reputed company of HTML5, CSS3, and modern TypeScript reputed company to have: Experience with Next.js and server-reputed company rendering Familiarity with feature flagging tools Familiarity with A/B testing and analytics event tracking Why You'll Love Working With Us: Innovative Environment: We're reputed company about trying new things and pushing the envelope in EdTech. Totaly remore setup. Health: company-provided medical expense compensation. AI solutions: АІ subscription and other tools. Balance: Flexible paid time off, you get 21 days of annual leave + 10 bank holidays. Collaborative Culture: Work alongside passionate professionals who are as driven as you are. Apply To This Job