Hire the Best React.js Developers
in Italy

Building a SaaS product that needs to look great, ship fast, and hold up at scale? I'm a Senior Full Stack Developer helping SaaS startups and product teams turn ideas into production-ready web applications using React, Next.js, Node.js, and TypeScript with a focus on performance, clean architecture, and code your team can actually maintain six months from now. With 1,100+ hours on Upwork, a 100% Job Success Score, and end-to-end product delivery across multiple industries, I own the full stack: frontend interfaces, backend APIs, database design, integrations, and deployment. WHAT YOU CAN EXPECT WORKING WITH ME – Full Stack web applications built with React, Next.js, Node.js, and TypeScript – SaaS platforms with multi-tenant architecture, authentication, and role-based access – REST and GraphQL API development with secure, well-documented endpoints – Database design and optimization (PostgreSQL, MongoDB, MySQL) – Payment integration with Stripe, plus third-party APIs (Twilio, SendGrid, OpenAI, etc.) – Pixel-perfect UI implementation from Figma, responsive across all devices – Performance optimization (Core Web Vitals, lazy loading, code splitting, query tuning) – Cloud deployment on AWS, Vercel, and Docker with CI/CD pipelines – MVP development for founders who need to launch in 4–12 weeks CORE STACK Frontend: React.js, Next.js, TypeScript, Redux, Zustand, React Query Backend: Node.js, Express.js, NestJS, REST APIs, GraphQL Databases: PostgreSQL, MongoDB, MySQL, Prisma, Mongoose Styling: Tailwind CSS, SCSS, Material UI, shadcn/ui Cloud & DevOps: AWS (Lambda, S3, EC2), Vercel, Docker, GitHub Actions, CI/CD Integrations: Stripe, Twilio, SendGrid, OpenAI, Auth0, Firebase Tools: Vite, Webpack, Figma, Git, Postman WHO I WORK BEST WITH – Startup founders building a SaaS MVP from scratch – Product teams that need a senior fullstack engineer who can own features end-to-end without coordination overhead – Companies scaling an existing product who care about UX, performance, and maintainable architecture I'm currently available for full-time contracts (30+ hrs/week) and open to contract-to-hire opportunities. Let's talk about your project I usually respond within a few hours.

I'm a React.js specialist based in Rome, Italy, with 10+ years of web development experience and a proven track record of delivering high-performance applications. Over the past 5 years, I've completed 90+ successful projects on Upwork, maintaining a 100% Job Success rate while working with clients across diverse industries. My Expertise: I specialize in modern JavaScript frameworks—particularly React.js, Next.js, and Gatsby.js. I have deep expertise in building server-side rendered applications, static site generation, and Progressive Web Apps. I'm proficient in TypeScript, GraphQL, RESTful APIs, and styling technologies like TailwindCSS and SCSS. What Sets Me Apart: → Performance-Focused: I consistently optimize for speed and user experience, implementing best practices like code splitting and automatic optimization. → Full-Stack Capability: Comfortable working on both client-side and server-side aspects of web development. → Clear Communication: I prioritize transparency and proactive problem-solving, ensuring clients understand progress and feel heard throughout the project. → Quality-Driven: My meticulous attention to detail and clean, efficient coding practices result in maintainable, scalable solutions. Recent Highlights: ✓ Successfully migrated a complex Strapi web-app to PayloadCMS with builder.io integration ✓ Developed Progressive Web Apps leveraging GatsbyJS and GraphQL ✓ Built and maintained high-traffic websites with responsive design across all devices ✓ Consistently received 4.7-5.0 star ratings with testimonials praising communication and technical skill Why Work With Me: I treat every project as if it were my own. My goal isn't just to write code—it's to deliver solutions that drive real business value. I'm reliable, deadline-conscious, and ready to go beyond expectations. Let's build something great together!

🟢 𝗔𝘃𝗮𝗶𝗹𝗮𝗯𝗹𝗲 𝗡𝗼𝘄! ✨ 𝙏𝙤𝙥 10% 𝙏𝙖𝙡𝙚𝙣𝙩 𝙤𝙣 𝙐𝙥𝙬𝙤𝙧𝙠 ✨ 𝗘𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲𝗱 𝗙𝘂𝗹𝗹-𝗦𝘁𝗮𝗰𝗸 𝗪𝗲𝗯 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 with 2+ years delivering bug-free, pixel-perfect applications. I specialize in modern JavaScript frameworks and scalable backend solutions that help businesses grow. What I Deliver: Frontend Development: ✅ React & Next.js Applications - Modern, responsive web apps with optimal performance ✅ TypeScript Development - Type-safe, maintainable codebases for long-term success ✅ Responsive Web Design - Mobile-first approach ensuring perfect display on all devices ✅ Figma/PSD to Code - Pixel-perfect conversion of your designs into clean, efficient code Backend & API Development: ✅ Node.js & Express - Scalable server-side applications and RESTful APIs ✅ Database Integration - MongoDB, MySQL, PostgreSQL with TypeORM and Prisma ✅ API Development & Integration - Secure, efficient data flow between systems ✅ Headless CMS Integration - Sanity, Strapi, and other modern content management solutions DevOps & Deployment: ✅ Cloud Deployment - AWS, Azure, VPS setup and management ✅ Performance Optimization - Fast-loading, SEO-friendly applications ✅ Bug Fixes & Troubleshooting - Quick resolution of technical issues Why Choose Me: ✅Quality Guaranteed - Every project includes thorough testing and quality assurance ✅On-Time Delivery - Clear communication and realistic timelines you can count on ✅Scalable Solutions - Code written with growth and maintainability in mind ✅Modern Tech Stack - Stay ahead with the latest web development technologies Ready to transform your ideas into powerful web applications? Let's discuss your project requirements and create something amazing together. Specialties: React, Next.js, Node.js, TypeScript, API Development, Database Design, Responsive Design, Performance Optimization

Experienced React Native & NestJS Software Engineer | Building Scalable Mobile & Web Applications As a skilled Software Engineer, I specialize in creating cross-platform mobile apps, complex UI/UX designs, and responsive single-page web applications using React Native, ReactJS, and modern frameworks. My deep expertise ensures the delivery of high-quality, scalable, and performance-driven solutions tailored to your needs. What I Bring to the Table: Mobile App Development: Expertise in building cross-platform apps with React Native, from scratch to deployment on Google Play and the App Store. Web Development: Proficiency in ReactJS, crafting dynamic, single-page applications with a focus on seamless user experience. Back-End Expertise: Advanced skills in NestJS and Node.js, enabling me to develop powerful APIs and microservices that support scalable, high-performance systems. Cloud Deployment: Hands-on experience with AWS to deploy and scale applications, ensuring a secure and reliable infrastructure. How I Can Help You: Build applications from scratch. Maintain and optimize production-ready projects. Conduct code reviews and fix bugs. Develop new features and enhance existing functionality. Optimize performance and implement best practices for scalability. Tech Stack Expertise: Mobile & Front-End: React Native, React.js, Context API, Redux, Material UI, Expo, JavaScript, TypeScript, HTML5, SCSS. Back-End: NestJS, Node.js, Dotnet Core, REST APIs, PostgreSQL, Firebase. Tools & Workflow: GitHub, GitLab, BitBucket, Agile, Kanban, Trello, Jira. Cloud & Deployment: AWS, Firebase Hosting. Why Choose Me? Whether you’re looking to build an app from the ground up or refine your existing project, I am committed to delivering scalable, user-centric solutions that drive success. I thrive on collaboration and am always open to discussing ideas to ensure your project exceeds expectations. Let’s Connect: Have a project in mind? Need a React Native or NestJS expert? I’m here to help. Message me to discuss your project today!

Hello! I am a Full Stack, detail-oriented developer from Florence, Italy, with over 17 years of experience in website / app development and engineering. I specialize in both frontend and backend technologies, delivering high-quality solutions tailored to your project needs. I am not only coding, but also taking responsibility for the project, trying to predict the future issues and help all collaborators involving in the project. It is not possible to be the best coder on UpWork, but it is possible to take care of each project like my own and get the best possible results (which is reflected in my previous clients positive reviews). - My Technical Expertise: Frontend: VueJS (Vuetify, Nuxt), ReactJS (Redux, Saga, Next) Backend: NodeJS (Express, Nest), PHP (Laravel, CodeIgniter using LiveWire, AlpineJS). CSS Frameworks & Libraries: TailwindCSS, Bootstrap, SCSS. Fully Laravel: Creating dynamic and responsive web applications using Blade templates engine, LiveWire, AlpineJS. WordPress (including WooCommerce), developing plugins and performing customizations on theme, plugin, and core levels. - AI Integration I specialize in integrating AI into projects through APIs to enhance functionality and automate processes. By leveraging tools like OpenAI, Google Cloud AI, and other machine learning APIs, I can bring intelligent features to your applications. Whether it’s adding natural language processing, image recognition, or predictive analytics, I ensure seamless integration that drives efficiency and innovation. - Tools I Use: I am proficient with all modern development and collaboration tools such as GitHub/GitLab, Bitbucket, Jira, Trello, Taskade, Linear, Slack, and more. I ensure streamlined team collaboration and efficient code management in every project. - My Approach: Flexible & Responsive: I am highly adaptable and committed to being available according to your preferred timezone, even during weekends. Problem Solver: I thrive on challenges and always find the fastest and most effective solutions to any issue your project may face. Client-Centric: Open to discussing project details and making proactive suggestions to enhance your product. - Technical Skills: 1. React JS / Native (Redux, Saga pattern) 2. Vue JS 3. Node JS 4. PHP (Larval, CodeIgniter experienced) 5. Java Script, TypeScript 6. HTML 7. CSS, SCSS 8. GIT Frameworks I am working on: 1. React (With Material UI, JSS, Redux, Saga pattern) 2. Vue / Vuetify 3. NestJS 4. ExpressJS 5. Laravel (LiveWire, AlpineJS, TailwindCSS) 6. CodeIgniter 7. PhoneGap 8. JQuery 9. Bootstrap CRM, CMS, E-Commerce platforms: 1. OpenCart 2. Magento 3. Shopify (Ajax API, Rest API) 4. Esty (Rest API) 5. WooCommerce 6. Wordpress Social networks (SDK, Rest API, etc…): 1. Facebook 2. Twitter 3. Instagram Databases 1. MySql/MariaDB 2. PostgreSql 3. MongoDB I am fluent in English and available daily from 9:00 AM until late night, Florence time (GMT+2). I look forward to collaborating with you and contributing to your project's success! Thank you for your attention.

👋 Hi, I’m Serhii! A passionate Full Stack Developer focused on building modern, scalable, and high-performance web applications. My expertise lies in crafting fast, responsive, and visually appealing websites and web apps using React, Next.js, Svelte, Node.js, NestJS 🔹 What I Offer: ✅ Custom Web Applications – Full-stack apps built with React, Next.js, and Node.js ✅ High-Performance UI/UX – Optimized for speed, accessibility, and SEO ✅ State Management & APIs – Efficient architecture using Zustand, Redux, REST APIs ✅ Animations & Interactivity – Engaging effects with Framer Motion, GSAP ✅ Mobile-Responsive & Pixel-Perfect Design – Smooth cross-device experiences ✅ Cloud & Database Solutions – Firebase, MongoDB, PostgreSQL 🔹 Tech Stack: 🟢 Front-end: React.js, Next.js, TypeScript, Tailwind CSS, Framer Motion 🟢 Back-end: Node.js, Express.js, API Development (REST/GraphQL) 🟢 Databases: MongoDB, PostgreSQL, Firebase 🟢 Tools & Platforms: Git, GitHub, VS Code, Figma, Postman 🟢 Other Expertise: Server-side Rendering (SSR), Static Site Generation (SSG), Authentication & Security (JWT, Firebase Auth), Performance Optimization 🏆 Experience & Notable Projects: ✔ 1+ years in Web Development ✔ 5+ successful freelance projects in e-commerce, SaaS, and personal branding ✔ Worked on team-based projects, collaborating with designers & developers 🔹 Job Tracking Application – Built a real-time job tracking web app using React, Node.js, featuring secure authentication, job status updates, and mobile-friendly UI. 🔹 E-commerce Website – Developed a modern online store with dynamic product filtering, Stripe payments, and high-performance SEO optimization. 🔹 Regression Therapy Landing Page – Designed a high-converting animated landing page with smooth transitions, fast loading speed, and SEO optimization. Why Work With Me? 💡 Clean & Maintainable Code – I follow best industry practices to ensure scalability. 📢 Clear Communication – I keep you updated at every stage of development. ⚡ Detail-Oriented & Reliable – I ensure the final product meets your expectations. 🤝 Long-Term Client Relationships – I aim to build strong partnerships through high-quality work. 📩 Need a skilled developer to bring your vision to life? Let’s connect! I’m available for both short-term and long-term projects. 🚀 🔑 KEYWORDS 🚀 Full Stack Developer, React Developer, Next.js Developer, JavaScript Developer, Frontend Developer, Backend Developer, Web Developer, MERN Stack, Next.js, React.js, Node.js, Express.js, TypeScript, Tailwind CSS, Firebase, MongoDB, PostgreSQL, Zustand, Redux, API Development, REST API, UI/UX, Performance Optimization, Server-side Rendering (SSR), Static Site Generation (SSG), Authentication, JWT, Firebase Auth, Framer Motion, GSAP, SEO Optimization, Mobile-Responsive Design, E-commerce, SaaS, Landing Page, Job Tracking App, Progressive Web App (PWA), Git, GitHub, Web Applications, SaaS Development.