Hire the Best Next.js Freelancers
in Ukraine

I build React and Next.js applications that are fast, responsive, and stay maintainable as they grow - from pixel-perfect frontends to full-stack features with authentication and payments. A few examples of what I've delivered: • Migrated a complex Excel-based calculator into an interactive, fully-validated web module for a glass installation company - replacing error-prone spreadsheet logic with a reliable UI. • Built responsive, cross-browser frontends with CMS integrations covering ~90% of editable content, so clients can update their sites without touching code. • Delivered a custom admin panel and core UI for an e-commerce cosmetics platform, defining API contracts and adding client-side validation to reduce integration bugs. I specialize in Feature-Sliced Design (FSD) - an architecture that keeps codebases organized as they scale. I care enough about this that I built and published my own open-source ESLint plugin (eslint-plugin-fsd-paths) to enforce FSD import rules automatically, so the structure holds up even on solo or fast-moving projects. Every project I build includes real testing: unit tests, React Testing Library, Cypress E2E, and visual regression - not just "it works on my machine." Stack: React, Next.js (SSR/SSG/CSR), TypeScript, Redux Toolkit, RTK Query, Zustand, React Hook Form + Zod, Tailwind CSS, Prisma, PostgreSQL, NextAuth.js, Strapi/Directus CMS, GitHub Actions, Jest, React Testing Library, Cypress. Open to freelance projects involving e-commerce, SaaS dashboards, or apps with real architectural complexity. Message me with what you're building - happy to take a look and share how I'd approach it.

I'm a developer experienced in building websites for small and medium-sized businesses. Whether you’re trying to win work, list your services, or create a new online store, I can help. My expertise includes developing new features and components for both new and existing projects, with a strong focus on e-commerce . I also have experience in creating government procurement websites. Technology stack: Languages & Frameworks: TypeScript, JavaScript, React, Next.js, Redux Toolkit / RTK Query, Redux-persist, React Router Styling & UI Libraries: CSS-preprocessors, Tailwind, Bootstrap, Shadcn, Material UI Tools & Platforms: Git/GitHub, Npm, nvm, Webpack, Vercel, Heroku, Postman From full project management to maintaining regular communication, I ensure that your project runs smoothly from start to finish. Let’s work together to bring your vision to life! Regular communication is important to me, so let’s keep in touch.

Hi, I'm Denys Yakovenko, a Front-end developer from Ukraine. My mission is to transform your ideas into dynamic and engaging websites, whether for businesses, e-commerce platforms, portfolios, or blogs. Services Offered 🚀 - Custom-built, responsive websites - High-performance code - API and third-party integration - Secure, scalable backend solutions Why Choose Me? 🤝 - Extensive full-stack experience - Commitment to quality and deadlines - Clear communication - Dedicated to your project goals - After the end of the project, I can make changes for free within a month Let's bring your ideas to life! 🚀

Next.js developer with $100K+ earned and 28 completed projects on Upwork. What I build: → SaaS frontends and dashboards — App Router, Server Components, real data, clean architecture → AI-powered products — worked on Layla.ai, experience integrating AI features into production apps → Authentication flows — email, Google OAuth, role-based access with Supabase Auth / NextAuth → Marketing and product sites — SSG/SSR, SEO-optimized, Lighthouse 90+ → Figma to Next.js — pixel-perfect, responsive, shipped on time Stack: Next.js 14/15, React 18/19, TypeScript, Tailwind, shadcn/ui, Framer Motion, TanStack Query, Zustand, Supabase. I use Cursor and Claude in my workflow — faster delivery, same architecture quality. Response time: under 4 hours. Available for full-time or project-based work. Let's talk — I'll tell you honestly if I'm not the right fit.

I'm a React Developer with a passion for crafting seamless digital experiences. Since embarking on my coding journey in 2021, I've tackled projects ranging from innovative micro-frontend websites for prestigious oil companies to versatile roles in dynamic team environments, where my contributions have spanned from pixel-perfect UIs to efficient backend solutions. My tech toolkit includes React, TypeScript, Redux, Redux Thunk, Chart.js, Material-UI, Docker, and Webpack, allowing me to deliver robust applications with an eye for detail and user satisfaction. I pride myself on my ability to dive deep into code, troubleshoot with precision, and bring creative solutions to complex challenges. Notably, I've played a pivotal role in a project for an UAE oil company, embracing a micro-frontend approach without library dependencies, and have fluidly transitioned between frontend and backend roles in subsequent projects, enhancing functionality and user experience across the board. I'm eager to bring my blend of technical expertise and problem-solving skills to new projects, ready to collaborate with teams that value innovation, quality, and client satisfaction. Let's create something amazing together! Complete skills set: React, JavaScript, CSS, HTML, Node.js, HTML5, TypeScript, Web Development, Web Application, Redux, Next.js, API, CSS 3, Web, Design, Tailwind CSS, Landing Page, Website, API Integration, Front-End Development, Material UI, React Bootstrap, Agile Software Development, Git, Prototyping, Tailwind UI, MySQL, Visualization, WebGL, Three.js, Website Redesign, Ecommerce Website Development, Figma, Auth0, Adaptive Web Design, Websockets, Scrum, SCSS, NestJS, REST API, End-to-End Testing, Elasticsearch, Website Optimization, Responsive Design, Document Processing Software, GitHub, Sass

🚀 Delivering exceptional web solutions — innovative, reliable, results-driven. I create scalable applications with modern technologies and proven methods — you get quality code, great performance, and seamless user experiences. 🎯 Our Collaboration Process 1️⃣ Discovery & Planning — We analyze your requirements and define project scope. 2️⃣ Development & Testing — I build with best practices, ensuring quality at every step. 3️⃣ Fast Execusion - Agile, iterative development with regular updates. 4️⃣ Quality Assurance — Clean code, optimized performance. 5️⃣ Launch & Support — Smooth deployment with ongoing maintenance if needed. ❗ Ready to work with someone who treats your project like their own? Click the 'INVITE' — I'd love to learn about your goals and show you how we can achieve them together 📩. ⚙️ My Tech Stack: Frameworks: React, Next.js Languages: TypeScript, JavaScript, CSS, HTML Styling: Tailwind CSS, MUI, Bootstrap, Ant-Design, Mantine, HeadlessUI, Radix, Shadcn UI State Management: Redux, Redux Toolkit, React Context API Data Fetching: React-Query, Axios, TanStack Query Animations: React-Spring, Rive, GSAP Form Handling: React Hook Form, Formik Internationalization: next-intl, react-intl Code Quality: Prettier, ESLint ✅ What Clients Say About Me ⭐⭐⭐⭐⭐ "Very good collaboration with Pavlo on a ReactJS project, who is skilled, eager to learn, and very easy to work with on a personnal level. Wishing him the best of luck, would definitely work with him again in the future." - Matthieu C. Tech Startup Owner 🔎 My journey as a frontend developer began with a fascination for creating beautiful, interactive web experiences. Over the years, I've specialized in React and Next.js, mastering TypeScript to build type-safe, maintainable applications. I work with modern frameworks like Next.js for full-stack solutions and state management tools like Redux Toolkit and React Context API, ensuring smooth data flow across complex applications. Styling is where creativity meets functionality. Whether it's building responsive designs with Tailwind CSS, creating polished interfaces with MUI and Ant-Design, or crafting custom components with Mantine, HeadlessUI, Radix, and Shadcn UI, I focus on delivering pixel-perfect designs that work seamlessly across all devices. Transforming user interactions into smooth experiences has always been central to my approach. Whether I'm fetching data efficiently with React-Query and TanStack Query, creating fluid animations with React-Spring, Rive, and GSAP, or building robust forms with React Hook Form and Formik, I pay attention to performance and user experience. I have extensive experience with internationalization using next-intl and react-intl, ensuring applications work globally. I've built scalable architectures for startups and enterprises, integrated complex APIs with Axios, and maintained high code quality standards with Prettier and ESLint. Data visualization, real-time features, performance optimization, and accessibility compliance are integral parts of my development process. Whether it's debugging complex React issues, implementing responsive designs, optimizing bundle sizes, handling form validation, or creating smooth user experiences, I approach every project with the same dedication. I believe in writing clean, maintainable code and bringing ideas to life through modern web technologies and innovative solutions. Frontend development is not just my profession, it's my craft, and I'm always excited to bring my skills, creativity, and passion to new challenges.