Ivan Z.

Full Stack Developer React | React Developer | React Node.js | Next.js

I help businesses save money and accelerate development by working up to three times faster using AI-assisted workflows. By combining AI-driven tools with my experience as a full-stack React developer, I streamline both frontend and backend work so teams can focus on product strategy instead of repetitive tasks. I build scalable, high-performance apps with React, Next.js, Supabase, and Node.js (NestJS), delivering reliable end-to-end solutions for SaaS and AI-powered products-faster, without sacrificing maintainability. 🚀 I’ve been working as a Full Stack Developer React for more than 10 years, and during this time I’ve successfully delivered 70+ projects as a Full Stack Developer React - from MVPs to complex SaaS and AI-driven platforms. My experience as a Full Stack Developer React allows me to design systems that scale end-to-end, stay maintainable, and don’t require painful rewrites later. 🤖 During this time, I frequently integrate Node.js and NestJS on the backend with React and Next.js on the frontend, creating seamless end-to-end solutions for SaaS and AI-powered applications. I focus on building modular architectures that allow teams to scale quickly, implement real-time data features, and maintain high performance under load. By combining frontend and backend expertise, I ensure that both user interfaces and server-side systems work efficiently together, providing clients with faster deployment cycles and robust, maintainable products. Additionally, I optimize database interactions, API communications, and service integrations so SaaS platforms remain reliable as they grow. 🌍 As a Full Stack Developer React, I’ve built long-term partnerships with clients from the US, Canada, and Australia, supporting SaaS and AI products through multiple growth stages. My work as a Full Stack Developer React consistently improves Core Web Vitals, load times, SEO, and user engagement. ⚛️ On the frontend, as a Full Stack Developer React, I specialize in React and Next.js using TypeScript and JavaScript. I convert Figma designs into pixel-perfect, production-ready interfaces 🎨 using Tailwind CSS, SCSS, CSS Grid, and Flexbox. 🖥️ As a Full Stack Developer React working with Next.js, I use SSR, SSG, CSR, and the App Router, following SEO and performance-first architecture. Performance optimization is a core part of my work as a Full Stack Developer React, including lazy loading, code splitting, and image optimization ⚡. 🔗 On the backend, as a Full Stack Developer React, I work with Node.js using NestJS to build scalable APIs and services. I have hands-on experience designing REST APIs, authentication systems (JWT, OAuth), working with databases (MongoDB, SQL), and integrating third-party services like Stripe 💳 - ensuring clean and reliable frontend-backend communication. 🤖 As a Full Stack Developer React, I also work with SaaS and AI-powered features, including integrations with AI services, building data-driven UIs, and creating responsive interfaces for intelligent applications. 👥 I provide consulting for teams looking for a Full Stack Developer React, helping improve architecture, performance, code quality, and development workflows. My experience allows me to identify bottlenecks early and prevent technical debt. 🧪 I support testing and reliability using Jest, Cypress, and Testing Library. As a Full Stack Developer React, I focus on scalable, reusable codebases that are easy to maintain and extend. 🎓 I hold the Meta Front End Developer Professional Certificate, strengthening my expertise as a Full Stack Developer React in modern frontend architecture, performance, and scalable applications. ✅ What I can help you with As a Full Stack Developer React / React Next.js / React Node.js Developer, I can help you with: ✔ Full Stack development (React + Next.js + Node.js with NestJS) ✔ Building SaaS and AI-powered web applications ✔ Frontend architecture and scalable UI development ✔ Backend API development with Node.js and NestJS ✔ Performance optimization & Core Web Vitals ⚡ ✔ Authentication systems (JWT, OAuth) ✔ Stripe integrations 💳 ✔ Real-time and data-driven applications ✔ Refactoring and scaling existing codebases ✔ Consulting and technical guidance 🛠 My process 1️⃣ You share your product goals or challenges 2️⃣ I analyze architecture, performance risks, and scope 3️⃣ We align on priorities, timeline, and expectations 4️⃣ You receive regular updates (daily or weekly) 5️⃣ Final delivery, testing, and post-launch support 🚀 📩 If you’re looking for a Full Stack Developer React who understands Next.js, Node.js with NestJS, SaaS, and AI - click Invite and let’s discuss your project. Best regards, Ivan Zinchenko