Ivan S.
FreelancerTop Rated⭐⭐ Top Rated Plus | Full Stack React & Next.js Developer ⭐⭐
🏎️ I can start immediately
Full Stack Developer specializing in React, Next.js, and TypeScript frontends — with the Node.js, Supabase, and PostgreSQL backend skills to ship complete products end-to-end.
SaaS MVPs delivered in 10–15 days. 7+ years, 90+ projects, Top Rated Plus. Based in Spain — EU timezone, GDPR-aware, fluent English.
🎯 Who I help
Founders launching MVPs, SaaS teams scaling React and Next.js apps, and product teams rebuilding slow or broken frontends. I've shipped end-to-end for fintech, healthtech, EdTech, real estate, automotive, and e-commerce clients.
🚀 What I deliver
💼 Frontend — my core craft
🔹 Production React and Next.js apps with TypeScript, Server Components, App Router, SSR, SSG, SPA
🔹 Pixel-perfect UIs from Figma using Tailwind CSS, Chakra UI, Material UI, Ant Design, Semantic UI
🔹 Advanced component architecture, performance optimization, Web Vitals, animations
🔹 State management: Redux, Redux Saga, React Query, Zustand, Context API
🔹 Responsive, mobile-first, accessible, tested (Vitest, Jest, React Testing Library, Playwright, Cypress)
🔹 React Native for cross-platform mobile (Expo, CLI)
✅ Full Stack — to ship the whole product
🔹 Node.js, Express, NestJS, and Python (FastAPI, Django) backends
🔹 REST and GraphQL APIs (Apollo, urql)
🔹 Supabase, PostgreSQL, MongoDB, Firebase, real-time subscriptions, RLS policies
🔹 AWS Lambda, Amplify, S3, serverless pipelines, Vercel, Netlify
🔹 Stripe billing and paywalls, multi-role auth, admin dashboards, CRUD systems
🔹 CI/CD with GitHub Actions, Docker
✅ AI Integration
🔹 OpenAI APIs, GPT tools, Claude APIs, prompt UIs, custom AI assistants
🔹 AI-integrated SaaS features, automation, RAG pipelines
⚙️ How I work
Short feedback loops, daily updates, clean PRs. Tested, documented code. 10–15 day MVP delivery cycles. You get working software on a schedule you can plan around — not surprises at the end.
🏆 Why clients stay
🔹 Frontend that's fast, clean, and survives the next developer reading it
🔹 Backend that's just enough to ship — no over-engineering
🔹 Business-outcome thinking, not ticket-closing
🔹 Top Rated Plus with consistent 5-star feedback
Spain#46 / 9,346Top 0.49%
Ivan S. earns an estimated $6.1k/mo. That's 4.1× the typical freelancer and more than 99.65% of everyone we track.