Hire the Best React.js Developers
in Croatia

⭐⭐⭐⭐⭐ "Bruno has been an amazing contribution to our front-end team. He’s efficient, responsive, and helpful. He has made a new React.js screen to our site with a lot of complex animations and many of those little but important details for UX. He killed it basically, and we will definitely work with him again. Highly recommended freelancer!" I am a communicative person, who has a keen interest in developing scalable, maintainable software with high-quality code, on-time delivery, and adherence to specifications. Why am I good at it? As a passionate learner, I am always seeking new opportunities, and I care about the satisfaction of my customers. I worked on projects of famous companies or projects that famous companies used: ✅ Philip Morris IQOS Greece ✅ Music Supervisor / WeGetArtist (Used by Netflix) ✅ Optilogic Cosmic Frog ⭐ Valuable contributions I can make to your project ⭐ ✅ 4 years of experience in React.js development. ✅ In-depth understanding of React's core concepts. ✅ Proficient in diagnosing and resolving performance issues promptly. ✅ Amazing CSS skills that can make impossible animations possible. ✅ Expertise in refactoring class components into functional components using React hooks. ✅ Exceptional communication skills, providing 24/7 availability to keep you informed about project status. ✅ Dedicated to ensuring your success and delivering tangible value to your business. ⭐ Here are compelling reasons why choosing me sets me apart from other freelancers:⭐ ✅ Focus on providing value to all of my clients and earning their trust through exceptional service. ✅ Core commitment to over-delivering, going beyond expectations to leave clients amazed. ✅ Maintain a high level of responsiveness, keeping communication channels open for seamless collaboration. ✅ Demonstrate resilience in tackling any challenges faced by clients and finding effective solutions. ✅ Embrace kindness as a guiding principle, treating everyone with respect, empathy, and a genuine desire to improve their situations. ⭐Technologies ⭐ - HTML5, CSS3, SASS - Bootstrap, MUI, Tailwind, KendoUI - JavaScript, jQuery - React.js Next.js - Redux, Redux Saga, Redux Toolkit - Vue, Vuex, Nuxt - Typography - WebFonts, Font-Face - Responsive Design - Cross-browser Optimization - Yarn, NPM - Git, GitLab, GitHub, Bitbucket - Trello, Jira, Slack - Mac OS, Linux, and Windows user. Would you be interested in leveraging my skills in order to develop any application and grow your business at the same time? If you would like to discuss the job posting in more detail with me, you can invite me to your job posting.

🙌 7+ Years of experience in full-stack web development 🏆 Top Rated Plus on Upwork | 100% Job Success Score | 7+ Years building for founders Hi, I'm Gabriel. For the past 7 years I've helped founders and teams turn ideas into real, working software, from MVPs that get to market fast to full SaaS platforms built to scale. These days, my focus is on full-stack development, AI integration, and SaaS. A lot of founders find me after a previous developer already burned through their time and budget and left them with nothing, almost always because of poor communication and the wrong expectations. With me, it's no micromanagement and complete transparency. You'll always know where things stand, what's done, what's next, and what's blocking. That's how I've helped dozens of founders launch their ideas and grow them. You can check out my case studies below to see for yourself, or read what some of my clients have said: Ben Furtado | Founder of Moonlitemoney - ⭐⭐⭐⭐⭐ "Gabriel is awesome. I was struggling to find the right developer to knock out my software MVP. I tried a lot of people who were over complicating the project and taking forever. Gabe came in and rebuilt the whole ring from scratch and did it 10x better in 1/10th the time. He understands the vision and knows how to bring it to life. I really can’t recommend him highly enough. Thank you Gabe!" Seth Carstens | Web Development Lead Nextiva - ⭐⭐⭐⭐⭐ "Gabriel was a valuable member of our web development team. He always delivered high-quality work and was willing to go above and beyond with extra hours on the nights and weekends to get the project across the finish line." Cristian Sava | CEO at Compire LLC - ⭐⭐⭐⭐⭐ "Gabriel is an exceptional engineer, truly one of the best I've worked with. His expertise and willingness to go above and beyond ensure top-notch delivery on every project. Beyond his technical skills, Gabriel stands out for his excellent communication, a rare find on Upwork. He's also highly reliable; I can trust him to complete any assigned task on time and with outstanding quality." I love working with ambitious founders and teams who want their website to stand out and perform. If that sounds like you, let’s connect.

I have over 4 years of experience as a Solidity and React.JS developer, 4 years of experience as a Software Engineer, over 10 years of experience in general programming and have Master's degree in Computer Science. I have experience in working with multiple clients that either need help on only Frontend development, Blockchain development or Full-Stack. I'm fully proficient into writing completely custom code in Solidity based on clients wishes, integrating it properly onto the website and connecting it to the backend server if needed. Blockchain development is a very complicated and sensitive business and you should choose to work with professionals that develop safe and tested smart contracts. Having an untested and poorly written smart contract can put your users funds in danger and ruin your entire project. I can create multiple custom DEFI solutions and also fork existing ones. Some of the many projects which I've built in the past are: • Smart contract that allows users to bet on a price prediction of cryptocurrencies using decentralized oracles • NFT launches/drops : regular, whitelisted, gasless whitelisting using wallet signatures, Merkle Tree etc. • NFT staking, merging etc. • ERC20 token ICOs: regular, whitelisted, gasless whitelisting • ERC20 tokens with custom specifications: burnable, tax fee on buying/selling etc. • DeFi forks of platforms (Uniswap, Pancakeswap and others) • Creating a bridge for wrapping NFTs and ERC20 tokens between chains I am highly capable of building you full custom solutions on Ethereum, Binance Smart Chain, Polygon and many other chains.

Hi there! My name is Ivan Šundrović and I am a Vue.js developer with 5 years of professional experience in building modern web applications. I specialize in using Vue.js along with Electron, Nuxt, TypeScript, Tailwind, Git, PWA and AMP to create high-quality, responsive, and scalable web applications. My expertise lies in building custom Vue.js components and plugins, optimizing performance, implementing server-side rendering with Nuxt, and leveraging TypeScript to ensure code consistency and reliability. I am also well-versed in using Git for version control and collaboration with other developers. In addition to my Vue.js skills, I also have experience working with Node.js and React, which allows me to integrate with existing applications and build full-stack solutions. My ability to learn quickly and adapt to new technologies has helped me to stay on top of the latest trends and tools in web development. If you're looking for a reliable and experienced Vue.js developer who can help you build your next web application, then look no further. Let's work together to create something great!

I specialize in developing full-stack applications across SaaS platforms, Learning Management Systems (LMS), EduTech, marketplace ecosystems, and e-commerce solutions. Top Rated Full-Stack Developer with 8+ years of experience designing, developing, and maintaining scalable web applications, AI-enhanced platforms, and eCommerce solutions. Skilled in modern frontend frameworks including React.js, Next.js, and AngularJS, with strong backend experience in Python, Django, FlaskAPI, Node.js, Nest.js, and Go. Experienced in WordPress and Shopify development, including custom themes, CMS customization, eCommerce workflows, and third-party integrations. Strong expertise in OpenAI integration, REST API development, payment gateway implementation, PostgreSQL database management, and responsive frontend development. Adept at building reliable CI/CD pipelines with GitHub Actions and deploying scalable applications using AWS, GCP, and Azure. Focused on clean code, performance, security, maintainability, and delivering practical solutions that support real business goals. Key Skills: AI Integration: Expert in integrating AI into real-world web applications, SaaS platforms, automation workflows, and internal business tools. Experienced with OpenAI, GPT-4o, Claude models, Whisper, embeddings, vector search, chatbots, AI assistants, document processing, content generation, and voice-based AI features. Skilled in building intelligent user experiences using NLP, prompt engineering, API orchestration, and custom AI workflows. WordPress, Shopify & CMS Development: Strong experience building, customizing, and optimizing WordPress, Shopify, and CMS-based websites. Skilled in custom theme development, plugin customization, Shopify Liquid, landing pages, product pages, checkout improvements, performance optimization, responsive layouts, and third-party app integrations. Able to support both simple business websites and complex eCommerce platforms. Frontend Development: Proficient in building modern, responsive, and high-performing user interfaces using React, Next.js, JavaScript, TypeScript, HTML, CSS, Tailwind CSS, and modern UI frameworks. Experienced in creating clean layouts, reusable components, mobile-friendly pages, admin dashboards, customer portals, and conversion-focused landing pages. Backend Development: Skilled in developing secure and scalable backend systems using Node.js, Python, REST APIs, and PostgreSQL. Experienced in API design, database architecture, authentication, role-based access, third-party integrations, background jobs, data processing, and backend logic for SaaS and eCommerce applications. Payment Gateways & eCommerce: Experienced in implementing secure payment systems and eCommerce workflows, including Stripe, PayPal, Shopify Payments, subscriptions, checkout flows, order management, invoices, and transaction handling. Focused on security, reliability, and smooth customer purchase experiences. Automation & Workflow Integration: Experienced in automating business processes using AI tools, APIs, webhooks, CRM integrations, email automation, data sync, and custom workflow systems. Able to connect multiple platforms and reduce manual work through smart automation. DevOps & Cloud: Adept at setting up CI/CD pipelines with GitHub Actions and deploying scalable applications using AWS, Azure, Vercel, and cloud-based infrastructure. Experienced with environment setup, production deployment, monitoring, performance optimization, and maintaining reliable delivery workflows. Development Approach: Focused on building clean, scalable, and maintainable solutions that solve real business problems. Comfortable working across frontend, backend, AI integrations, CMS platforms, and cloud deployment while keeping communication clear and delivery consistent. Let's connect!

💬 Let’s connect — click "Invite" to start turning your vision into reality. Have a web or mobile app idea? I’ll bring it to life — fast, secure, and built to scale. I’m a Senior Full Stack Developer with extensive experience in React, Node.js, Django, and scalable cloud architecture. I empower startups and tech companies to create robust, user-friendly applications that drive success. 💼 Ex-CTO & SaaS Founder With over 5 years of hands-on experience — including launching and scaling my own SaaS product — I deliver more than just code. I know how to transform MVPs into thriving businesses. From product strategy to technical architecture, I guide you to make informed decisions from the start. 🛠️ What I Bring: Deep expertise in React, Node.js, Nest.js, and the MERN stack Clean, scalable backend architecture with REST and GraphQL APIs Proven success launching and scaling production-grade SaaS platforms Strategic insight into MVP development, product-market fit, and user growth Secure, efficient payment integrations with Stripe & PayPal Cloud deployment expertise with Docker, AWS, Vercel, and DigitalOcean ⚙️ How I Can Help: SaaS MVP development & launch Custom web applications Enterprise SaaS architecture API design & integration Subscription billing systems Cloud infrastructure setup Frontend performance & UX optimization 🎯 My Focus I collaborate with founders and product teams to transform complex ideas into high-performing, scalable products. Whether you’re launching a new SaaS or scaling an existing one, I bring technical expertise, product-minded thinking, and clearԱ clear communication throughout the journey. ✅ Let’s Build Something Great Click "Invite" to discuss how I can help bring your SaaS vision to life. I’ve been there — I know what it takes to succeed. 🔍 Keywords: SaaS Developer · MERN Stack · Node.js · React.js · Full Stack · TypeScript · Django · API Development · Stripe · Web Applications · MVP · CTO Experience · Scalable Architecture · Cloud SaaS