Hire the Best Front-End Developers

⭐️⭐️⭐️⭐️⭐️ Top 1% Expert-Vetted Web Developer on Upwork 📍 No short-term projects 📞 Kick-off with the team is mandatory 🧨 Available for a quick project start ★ Top-100 Service Provider by Clutch ★ $500M+ Raised by clients ★ 99+ International Awards ★ 15+ years of expertise (NOKIA, OPERA, OPPO, UDEMY, AUTH0, etc.) 👋 Hi, I'm Sergii! I'm a senior web developer, full stack developer Next.js specialist, and front end developer with 10+ years of experience building SaaS platforms, eCommerce products, AI applications, and custom web solutions. Over the years, I've helped launch 100+ products using React, React NextJS, Next.js, and modern JavaScript frameworks. My work combines technical architecture, front-end engineering, and product thinking to create fast, scalable applications that deliver measurable business results. 🏆 Why Clients Work With Me ✔ 100+ React, React Next, and Next.js projects delivered ✔ 50+ fully launched products across SaaS, AI, fintech, and eCommerce ✔ $500M+ raised by companies I've supported ✔ 20+ Upwork clients and long-term partnerships ✔ 30+ Shopify and Shopify Webflow projects completed ✔ Mobile and web products used by thousands of daily users ✔ Extensive experience as a front end developer React and front end Next specialist 🚀 Core Expertise 📌 Front-End Development As a front end developer, front end web developer, and front end designer, I've built interfaces for startups, enterprise products, and high-growth SaaS companies. Using React, React NextJS, Next.js, TypeScript, Tailwind, and modern UI frameworks, I create scalable applications focused on performance, maintainability, and user experience. My front-end work has helped companies reduce load times, improve conversion rates, and accelerate product delivery through reusable component systems and scalable architecture. 📌 React & Next.js Development I've delivered 100+ projects using React, React Next, and Next.js, including SaaS platforms, dashboards, marketplaces, AI tools, and enterprise applications. As a front end developer React specialist and full stack developer Next expert, I focus on building high-performance applications with clean architecture, SSR, SEO optimization, and long-term scalability. 📌 Mobile App Development Beyond web applications, I have extensive experience in mobile app development using React Native. I've helped teams launch mobile apps for healthcare, fintech, logistics, education, and SaaS businesses. As a mobile app developer, I work across the entire product lifecycle—from mobile app design and architecture to deployment and optimization. My experience includes React Native Mobile applications, cross-platform development, and React Native Full Stack solutions connected to modern APIs and cloud infrastructure. 📌 Shopify & Webflow Solutions I've worked on 30+ Shopify and Shopify Webflow projects, helping brands improve storefront performance, customer experience, and conversion rates. As a Shopify front end developer, I build custom themes, Shopify Hydrogen storefronts, and modern eCommerce experiences using Liquid, React, and headless architectures. I also collaborate closely with Webflow teams, helping businesses bridge design and development through scalable Webflow implementations and front-end optimization. 📌 AI & Python Integrations As a front end developer Python specialist, I've worked on AI-powered products featuring OpenAI integrations, vector search, chat interfaces, workflow automation, and custom dashboards. My experience includes Python APIs, automation workflows, AI assistants, and modern SaaS products powered by LLM technologies. 💻 Technology Stack React • React Next • React NextJS • Next.js • React Native • React Native Mobile • React Native Full Stack TypeScript • JavaScript • Node.js • NestJS • Express • Fastify Shopify • Shopify Webflow • Webflow • WordPress MongoDB • PostgreSQL • MySQL AWS • Google Cloud • Azure Tailwind • Storybook • GraphQL • Redux 🔥 What Clients Hire Me For ✔ Front End Developer React projects ✔ Full Stack Developer Next.js applications ✔ React Native Mobile App Development ✔ Shopify Front End Developer services ✔ Webflow and Shopify Webflow implementations ✔ Front End Designer and UI implementation ✔ Front End Developer Python integrations ✔ SaaS platforms and enterprise applications ✔ Mobile App Design and development ✔ Custom Web Development solutions 💎 Why Work With Me I combine the expertise of a web developer, front end developer, mobile app developer, and full stack developer into one delivery process. Clients work with me because I don't just build features—I help create products that scale, perform, and generate business value. Whether you need a front end developer React specialist, Shopify front end developer, React Native full stack engineer, mobile app developer, Webflow expert, or full stack developer Next.js partner, I'd be happy to discuss your project.

Im Currently Upwork's top 10% in web/mobile and Healthcare Systems development.(Via UpworkMrr Rankings). Give me something to build and i'll build it so it works for you 24/7. Thats my promise. If you shoot me a invitation or message ill send you a personalised loom video back on how i may be able to help you! A little more about me: I help growth-focused businesses save time and scale fast by offering both systems and automations as full stack developer, so you have clean stored data, and the benefits of automations If your team is stuck in spreadsheets or bogged down by manual work, I’ll build reliable software systems and AI agents to turn your chaos into streamlined, data-driven processes. • last +2y building sensitive healthcare softwares HIPAA with react, react native, next, fastapi, and azure for infra. • 3+ years taking products from idea to production—owning architecture, development, deployment, and real-world adoption. • Experienced onboarding clients and working directly with stakeholders. • 100% Job Success Score | 5.0★ • HIPAA certified. • Real, measurable ROI my systems pay for themselves. • Clear communication and tailored solutions, every time. If you’re looking for someone who can own the entire technical side of your product from planning and architecture to deployment and long-term support while delivering quickly and maintaining high quality, those are exactly the kinds of projects I look for also. 🔧 EXPERTISE: FastAPI | React | React Native | Next.js | next | Back-End Development | Front-End Development | Full-Stack Development | Mobile App | Web Application | Supabase | PostgreSQL | Healthcare Software | HIPAA | LangChain | Node.js | js | API Integration | Azure DevOps | User Authentication | Electronic Health Record (EHR) | Electronic Medical Record (EMR)

Hi there! I'm a highly skilled 𝗨𝗜 𝗨𝗫 𝗗𝗲𝘀𝗶𝗴𝗻𝗲𝗿 𝗮𝗻𝗱 𝗙𝗿𝗼𝗻𝘁 𝗘𝗻𝗱 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 with 7+ years of experience creating visually appealing and user-friendly websites and web applications. My strong design background coupled with my coding expertise allows me to deliver high-quality projects that not only look great but also function seamlessly. As a 𝗨𝗜 𝗨𝗫 𝗗𝗲𝘀𝗶𝗴𝗻𝗲𝗿, I understand the importance of creating an intuitive and engaging user experience. I conduct thorough research and analysis to gain a deep understanding of your business and your target audience, and I use information to create designs that are not only aesthetically pleasing but also effective in achieving your goals. As a 𝗙𝗿𝗼𝗻𝘁 𝗘𝗻𝗱 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿, I have extensive knowledge of HTML, CSS, Bootstrap, JavaScript, React, Next js and other related technologies. I am proficient in various front-end frameworks such as React and I always ensure that my code is clean, well-structured, and optimized for performance. 𝗠𝘆 𝘀𝗸𝗶𝗹𝗹𝘀 𝗮𝗻𝗱 𝗲𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲 𝗶𝗻𝗰𝗹𝘂𝗱𝗲: Creating wireframes, prototypes, and mockups using design tools such as Figma, Sketch, and Adobe XD. Developing responsive and mobile-first websites and web applications. Integrating designs into various content management systems (CMS) such as Wordpress, Shopify, and Squrespace. Collaborating with back-end developers to ensure seamless integration and functionality. Conducting user testing and implementing feedback to improve the user experience. Staying up-to-date with the latest design and development trends and technologies. I am dedicated to delivering high-quality work that meets and exceeds my client expectations. If you're looking for a UI/UX Designer and Front End Developer who can bring your vision to life, please don't hesitate to get in touch!

🚀 Hi, I'm Dmytro. I'm a Front End developer with more than 8 years of experience building web and mobile applications for startups, product companies, and growing businesses. As a Front End developer, I've worked on MVPs, SaaS platforms, e-commerce products, internal business tools, and customer-facing applications used by thousands of users. 💡 My primary focus as a Front End developer is creating fast, responsive, and user-friendly applications using modern JavaScript technologies. I enjoy transforming complex requirements into clean, maintainable solutions that provide real value to users and businesses. 🤝 Throughout my career as a Front End developer, I've worked closely with designers, product managers, backend engineers, and business stakeholders to deliver products that are both technically solid and enjoyable to use. I believe a successful Front End developer should understand not only the code but also the goals behind the product. 🛠️ Technologies I work with As a Front End developer, my main stack includes: • React • Next.js • TypeScript • JavaScript • React Native • Angular • Vue.js • HTML5 • CSS3 • Tailwind CSS • Material UI (MUI) • SCSS • Webpack • Vite • Node.js 📈 Over the years, I've helped companies hire a reliable Front End developer who can contribute quickly, improve existing codebases, and build new features with confidence. ⚙️ What I can help with As a Front End developer, I can help with: • Building modern web applications from scratch • Developing scalable React and Next.js applications • Creating reusable component libraries • Design system implementation • Responsive and mobile-first development • Performance optimization • Server-Side Rendering (SSR) • Progressive Web Apps (PWA) • API integration • Frontend architecture • React Native mobile applications • Refactoring legacy projects • Bug fixing and maintenance 🔧 Many clients choose me as a Front End developer because I can quickly understand business requirements and translate them into practical solutions. When companies need a Front End developer who can take ownership of a feature from planning to production, I can provide that support. 🌐 I've worked as a Front End developer on both small startup projects and large-scale applications. My experience as a Front End developer allows me to adapt to different team structures, coding standards, and development processes. 🧩 Although my primary role is a Front End developer, I also have experience with backend development. This broader perspective helps me become a more effective Front End developer because I understand how frontend systems interact with APIs, databases, and cloud infrastructure. 💻 I've worked with: • PostgreSQL • MongoDB • MySQL • Firebase • Firestore • Supabase • AWS • Node.js • Python • PHP 🔗 This experience allows me to work effectively with backend teams and contribute as a Front End developer who understands the complete product lifecycle. 🎯 How I work I believe a great Front End developer should focus on more than writing code. A Front End developer should understand user experience, accessibility, performance, maintainability, and business objectives. 🤝 As a Front End developer, I value clear communication, ownership, and attention to detail. Every Front End developer should be able to balance technical excellence with practical business needs, and that's the approach I bring to every project. 📚 I've also contributed as a Front End developer in areas such as: • Code reviews • Technical planning • Frontend architecture • Git workflows • CI/CD pipelines • Agile development • Team collaboration • Mentoring junior developers 🚀 Whether you need a Front End developer for a short-term project, a Front End developer for long-term collaboration, or a Front End developer to strengthen your current engineering team, I can help. My goal as a Front End developer is to build products that users enjoy using and that businesses can confidently grow over time. 📊 Companies often look for a Front End developer who can join an existing team and become productive quickly. Others need a Front End developer to help launch a new product or modernize an existing application. In both cases, I focus on delivering reliable, maintainable, and scalable solutions. ✨ If you're looking for a Front End developer with strong React expertise, modern frontend experience, and a practical approach to product development, I'd be happy to discuss your project. Best regards, Dmytro

I build pixel-perfect websites for SaaS startups, agencies, and DTC brands — Figma to live in 2–4 weeks, fully responsive, SEO-ready, and easy to maintain. 60+ projects shipped with a 100% client satisfaction rate over 6 years on Upwork. 🏆 Top Rated on Upwork 🏆 $50K+ earned, 60+ jobs, 1,150+ hours 🏆 100% Client Satisfaction What I do best: ✅ Figma → Webflow conversion, pixel-perfect and responsive ✅ Advanced Webflow CMS setup, dynamic content, and CMS migrations ✅ Client-First (Finsweet) and Relume architecture for clean, scalable builds ✅ Custom interactions, GSAP and Lottie animations ✅ On-page SEO, page speed optimization, Core Web Vitals ✅ API integrations, Memberstack, Zapier, Make automations Also available for: Squarespace, HubSpot CMS, and Framer projects. Why clients keep coming back: - You work directly with me — no account managers, no juniors handed your project. - Clear timelines and weekly progress, no silent weeks. - I don't ship a project until it's pixel-perfect on every breakpoint. Recent client feedback: ⭐⭐⭐⭐⭐ "The most talented frontend developer on Upwork. A true master of his craft." ⭐⭐⭐⭐⭐ "Excellent engineer with the drive to go the extra mile. If you want someone who treats the project as his own — you've found the right person." ⭐⭐⭐⭐⭐ - "Dmitriy is a true professional at what he is doing. I haven't met any front-end developers in the last 10 years who code such pixel-perfect websites." Send a message with a quick description of your project and a link to your design (Figma is great). I usually reply within a few hours and can give you a fixed quote and timeline the same day. -- Dmitrii

𝗧𝗿𝘂𝘀𝘁𝗲𝗱 𝗯𝘆 20+ 𝗰𝗹𝗶𝗲𝗻𝘁𝘀 | 𝟰+ 𝗬𝗲𝗮𝗿𝘀 𝗙𝗿𝗼𝗻𝘁𝗲𝗻𝗱 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 & 𝗨𝗜 𝗗𝗲𝘀𝗶𝗴𝗻𝗲𝗿 I don't just write code — I design and build products that look great and work flawlessly. With 4+ years of experience as a frontend developer and UI designer, I've helped SaaS platforms, dashboards, and mobile apps go from idea to pixel-perfect reality. 𝑯𝒆𝒓𝒆'𝒔 𝒘𝒉𝒂𝒕 𝑰 𝒄𝒂𝒏 𝒅𝒐 𝒇𝒐𝒓 𝒚𝒐𝒖: 🔹 𝘍𝘳𝘰𝘯𝘵𝘦𝘯𝘥 𝘋𝘦𝘷𝘦𝘭𝘰𝘱𝘮𝘦𝘯𝘵 — You have a SaaS, dashboard, or mobile app design and need a frontend developer to make it pixel-perfect. I work closely with your UX designer on what's buildable and collaborate with your backend team on architecture and engineering. I'm the right fit — skilled in Angular, React, and vanilla HTML/CSS/JS. 🔹 𝘜𝘐 𝘋𝘦𝘴𝘪𝘨𝘯 — You have a SaaS, dashboard, or mobile app idea and need a UI designer to bring it to life. I design in Figma and work closely with stakeholders and your team to make sure every screen is both beautiful and realistically buildable. 𝑾𝒉𝒂𝒕 𝑰'𝒗𝒆 𝒅𝒐𝒏𝒆: With more than 4 years of experience, I've consistently delivered pixel-perfect UIs and clean, well-documented code. ✅ Worked with a US-based UGC company as the lead Angular frontend developer on their UGC SaaS platform, contributing for 8+ months to help them achieve real results. ✅ Developed the frontend for Belgian web portal companies as an Angular frontend developer. ✅ Bachelor's degree in Computer Science (specialization in Big Data & Data Analysis). ✅ Built long-term client relationships, with projects spanning 5+ months. ✅ Experienced as a full-stack developer, a role that helps me communicate well and understand what backend developers need and think 𝑳𝒆𝒕'𝒔 𝒃𝒖𝒊𝒍𝒅 𝒔𝒐𝒎𝒆𝒕𝒉𝒊𝒏𝒈 𝒈𝒓𝒆𝒂𝒕 𝒕𝒐𝒈𝒆𝒕𝒉𝒆𝒓. If you're looking for a developer who thinks like a designer and a designer who understands code, send me a message — let's talk about your project and how I can help bring it to life. 🚀