Hi, I'm Taras — a Senior Front-End Developer specializing in React.js, Next.js, and modern scalable web applications. Although my Upwork profile is new, I already earned the Top Rated Plus badge and a 100% Job Success Score, thanks to successful collaborations and quality delivery. I help startups and businesses build fast, responsive, and SEO-friendly websites, web apps, and SaaS platforms with pixel-perfect design and clean, reusable code. 🔧 What I Do Best: • React.js / Next.js Development (SPAs, SSR, SSG) • SaaS Platforms & Dashboards • Figma to React / Next.js (Responsive & Optimized) • Headless CMS Front-End Integration • Custom WordPress Front-End (with React or Tailwind) • NFT Marketplaces (incl. MetaMask, Wagmi, WalletConnect) • E-commerce Front-End Solutions • Educational & Fintech Web Platforms 🛠️ My Tech Stack: • React.js, Next.js, TypeScript, JavaScript (ES6+) • Tailwind CSS, Shadcn UI, Styled Components • Zustand, Redux, Redux Toolkit • REST API, Axios, WebSockets • Figma, Storybook, Jest, Vitest, Playwright • Git, GitHub, Vercel, CI/CD 📈 Business Domains I’ve Worked In: • E-commerce (custom CMS, online stores) • Fintech (banking platforms, analytics dashboards) • SaaS (multi-tenant web apps) • Healthcare (appointment systems, secure dashboards) • Education (online learning portals) • Web3 / NFT (white-label marketplaces) 🌟 Highlighted Projects: • E-commerce CMS – Custom CMS for online stores (Next.js, InertiaJS, Tailwind, TypeScript) – Team of 12 • Zardite – NFT marketplace (Next.js, Wagmi, Zustand) – Team of 5 • Woub – SaaS for organization management (Vue.js, WebSockets) – Team of 15 • PickTheBank – Banking comparison platform (Next.js, Zustand) – Team of 8 • Edeely – Educational platform with scheduling and user dashboard (Next.js, Redux Toolkit) – Team of 10 💡 Why Clients Choose Me: • Proven experience in launching and scaling large projects • Clear communication, clean code, and attention to business needs • Focus on performance, UX, and maintainability • Collaborative team player or solo contributor 📬 Let’s Work Together Have a React or Next.js project? Need a reliable developer to build your MVP, redesign your frontend, or scale your SaaS? I’m available for both short-term and long-term engagements. 📩 Send me a message — let’s bring your product to life!

🚀 AI Agent Developer | RAG Systems | OpenAI & Claude Expert | SaaS & Automation Engineer I build AI-powered applications, intelligent agents, and RAG systems that help businesses automate workflows, reduce manual work, and launch scalable SaaS products. If you're looking to turn an idea into a real AI product whether it's a chatbot, AI agent, internal tool, or full SaaS platform I can design, build, and ship it end-to-end. With 6+ years of full-stack experience, I specialize in building **production-ready AI systems**, not just prototypes or demos. --- ### 🔥 What I Can Build for You ✅ AI Agents & Automation Systems * Autonomous AI agents for business workflows * Multi-step task automation systems * MCP-based agent integrations * AI workflow automation for operations ✅ RAG & Knowledge-Based AI Systems * Document Q&A systems (PDFs, websites, databases) * Enterprise knowledge base chatbots * Semantic search engines * Vector database-powered AI systems ✅ AI SaaS & MVP Development * AI-powered SaaS platforms from scratch * Startup MVPs built in weeks, not months * Subscription-based AI products * Full-stack dashboards and admin panels ✅ AI Chatbots & LLM Apps * ChatGPT / Claude / Gemini integrations * Customer support AI assistants * AI copilots for internal tools * Custom LLM-based applications --- ### 🛠 Tech Stack AI & LLMs: OpenAI, Claude, Gemini, LangChain, LangGraph, LlamaIndex Frontend: React, Next.js, TypeScript, Tailwind CSS Backend: Node.js, NestJS, Fastify, Python (Django, Flask) Databases: PostgreSQL, MongoDB, Redis, Pinecone, Weaviate, Qdrant Cloud: AWS, Docker, CI/CD, scalable architecture --- ### 💡 Why Clients Hire Me ✔ I focus on real business outcomes, not just code ✔ I build scalable production systems from day one ✔ Fast MVP delivery for startups and founders ✔ Strong architecture for long-term growth ✔ Clear communication + reliable execution --- Whether you need an AI agent, RAG system, automation workflow, or a full SaaS product — I can help you design and build it from idea to production. Let’s build something that actually solves a real problem.

✅ Skilled React, React Native and Next.JS Developer with 4+ years of experience. I'm adept at creating visually appealing interfaces using HTML, CSS, and TailwindCSS. While my focus is on frontend work, I also have some knowledge of backend technologies like Node.js and Express.js. I also have hands-on experience integrating AI-powered features into web and mobile applications, including LLM-based chat assistants, AI document processing, voice transcription, and intelligent search solutions using modern AI APIs. To accelerate development while maintaining high code quality, I actively use AI-powered development tools such as Claude, Cursor, and ChatGPT. They help streamline research, debugging, code generation, and refactoring, allowing me to deliver features faster while carefully reviewing and validating every implementation. I work well in teams, using tools like Git, GitHub, and Jira to collaborate effectively and ensure timely project delivery. My goal is to build engaging digital experiences that connect with users. I'm enthusiastic about contributing my skills to enhance your projects and captivate your audience. 𝕋𝕖𝕔𝕙𝕟𝕠𝕝𝕠𝕘𝕚𝕖𝕤 ⭐️ React ⭐️ React Native ⭐️ Next.js ⭐️ TypeScript ⭐️ JavaScript ⭐️ NodeJs ⭐️ TailwindCSS ⭐️ MaterialUI 𝕋𝕠𝕠𝕝𝕤 🛠 Xcode 🛠 Android Studio 🛠 Jira 🛠 Figma 🛠 Trello 🛠 Github 🛠 Postman 🪢 Reasons to Select My Services: 🥇React Expertise: Unleashing React's full potential for captivating user interfaces. 🔍 Innovative Problem-Solving: Thriving on inventive solutions for complex challenges. 👨🏻‍💻Proven skill in both independent work and seamless teamwork. 🔝A wide range of abilities that enhance my effectiveness in various tasks. Do not hesitate, let's work together, waiting for your message📩

🏅𝐓𝐎𝐏-𝐑𝐀𝐓𝐄𝐃 | 🎯 𝟏𝟎𝟎% 𝐉𝐎𝐁 𝐒𝐔𝐂𝐂𝐄𝐒𝐒 𝐒𝐂𝐎𝐑𝐄 | 💼 𝟏𝟎+ 𝐘𝐄𝐀𝐑𝐒 𝐄𝐗𝐏𝐄𝐑𝐈𝐄𝐍𝐂𝐄 Hi! I’m a full-stack developer with over a decade of experience turning ideas into high-performance web applications using Angular, React, Next.js, TypeScript, Node.js, Express, Tailwind CSS, HTML, CSS, SQL & NoSQL databases (MongoDB, MS SQL Server), and Git-based version control. I focus on creating solutions that are scalable, user-friendly, and well-architected for long-term success. I pride myself on being a strategic partner, not just a coder. I take projects from concept to successful deployment, ensuring clear, proactive communication along the way. My goal is to build strong, lasting partnerships with clients who value quality, reliability, and transparency. ❤️ 𝗪𝗛𝗬 𝗖𝗟𝗜𝗘𝗡𝗧𝗦 𝗟𝗢𝗩𝗘 𝗪𝗢𝗥𝗞𝗜𝗡𝗚 𝗪𝗜𝗧𝗛 𝗠𝗘: 🔸End-to-end Front-End and Back-End solutions: From concept to deployment and maintenance 🔸Clean, maintainable code: Well-architected solutions built for scalability and long-term success 🔸Proactive communication: Transparent updates, clear expectations, and strong collaboration 🔸Efficient Workflows: Streamlined project delivery using Git, GitHub, BitBucket, and Azure DevOps 🎩 𝗖𝗢𝗥𝗘 𝗘𝗫𝗣𝗘𝗥𝗧𝗜𝗦𝗘: 🔹Full-Stack: JavaScript, TypeScript 🔹Front-End Development: React, Angular, Next.js, Tailwind CSS, HTML5, CSS3, Bootstrap 🔹Back-End Development: Node.js, Express, .NET Core 🔹Databases: SQL & NoSQL (MongoDB, MS SQL Server) 🔹Version Control & CI/CD: Git, GitHub, BitBucket, Azure DevOps Ready to elevate your project? Let’s connect and discuss how I can help bring your vision to life. 🚀

Hi! This is Marco Maigua with 9 years of experience in the Software Architect and development and I earned Masters degree in Computer Science at the University of Saskatchewan. I have launched successful products in web and mobile technologies, blockchain, Crypto, Cloud Computing while I engaged in various types of clients' projects from MVP to production. With the antifragile mindset, I have adopted and remained resilient, fostering a high-performance culture, blending technical and strategic expertise and applying best practices and optimization techniques. While working as a full-stack engineer, I put exceptional attention to detail into the projects and launched more than 10 MVPs, POCs into success, fixing the bugs thus ensured smooth production. I am ready to jump into your projects and discuss the details further!!

I have 10+ years of experience in web app development. I have 6+ years experience in React/Next and Svelte/SvelteKit. My Focus is to learn new things around my skills and make my client 100% satisfied with my work. Skills: ✅ react.js ✅ next.js ✅ Svelte ✅ SvelteKit ✅ Micro Frontend ✅ node.js ✅ MongoDB ✅ MySQL ✅ GraphQL ✅ Typescript ✅ Supabase ✅ Firebase ✅ Figma/XD to web page Soft skills: ✅ Flexible ✅ Quick learner ✅ Attention to details ✅ Good communication ✅ Good team member ✅ Working with deadlines ✅ Familiar with Git, GitHub, Bitbucket ✅ Familiar with Jira and Scrum meeting ✅ Familiar with Slack, Skype, Discord and Zoom My expertise in Frontend, Migrations, Speed Optimisation, Responsive Design (Mobile-ready), and UX / UI Design. Hands-on react.js, next.js, Svelte/SvelteKit, NodeJs, Typescript, Supabase, chart.js, Fabric.js, HTML, CSS, SCSS, Figma, Figma to HTML/Web, Tailwind, Bulma.

I specialise in: 💠 convert designs into pixel-perfect frontend by React (Next.js), TS, Tailwind 💠 API integration with loading and error handling, with seamless user experience 💠 building maintainable project structure 💠 Improving layout issues, responsiveness, and overall performance 💠 Cache strategy, SSR, SSG, Performance Optimization 💠 Unit testing with (Jest) 💠 Security (XSS, CSRF) I’ve worked on landing pages, dashboards, e-commerce, AI Integration, and full web apps. I try to keep communication clear and direct, and I prefer writing code that any developer can read and continue working on later. If you have a project or an idea and need someone to handle the front end in a simple and organized way, I’d be happy to help.

I'm a React/Nodejs developer with over 4 years of experience in building innovative web and mobile applications. Experienced in collaborating with diverse, global teams to develop robust and innovative solutions. 📣💬️ Contact a Top Rated developer and I will offer the best solutions for your project! 💯 What my clients say about me: ⭐️⭐️⭐️⭐️⭐️ “Maksym consistently exceeded our expectations by delivering high-quality code and quick solutions. He was proactive and communicated clearly throughout the project.” ⭐️⭐️⭐️⭐️⭐️ “Working with Maksym was a great experience. He helped us optimize our backend processes and improved the frontend performance noticeably. Reliable and professional developer.” 🖥 Languages: TypeScript, JavaScript, HTML 🔝Frontend: React, React Native, Redux, SASS, Bootstrap, Less, Next.Js, MaterialUI, Tailwind CSS, Styled Components, Rtk query, Redux Saga, Redux Toolkit, Redux Thunk, Socket.io, Retool, Strapi 🔙Backend: MongoDB, PostgreSQL, NodeJS, ExpressJS, NestJs, GraphQL, Websockets, Serverless, Jest, Lambda, DynamoDD, SES, API Getaway, S3, SNS ☁️Cloud: AWS, Google Cloud Platform, Heroku, Vercel ⚔️Tools: Git, Github, Bitbucket, Gitlab, Jira, Microsoft Teams, Slack, Trello, Agile Scrum, Kanban 3/11/25 updated

Tired of developers who "figure it out" on your dime and still miss the launch date? You need a full-stack developer who has already built what you need — and can do it again, faster. I specialize in SaaS & MVP development — production-grade SaaS platforms, MVPs, POS, and ERP systems for founders and product teams. Fast, clean, and built to scale from day one. My stack: React.js · Next.js · Supabase · TypeScript · MongoDB · PostgreSQL · Vercel · Node.js · REST APIs · Claude API · VPS Deployment · AWS · GitHub 𝗪𝗵𝗮𝘁 𝗜 𝗵𝗮𝘃𝗲 𝘀𝗵𝗶𝗽𝗽𝗲𝗱: ✅ 6 SaaS platforms — live, stable, serving real users in multi-tenant environments ✅ 4+ years building on Next.js, Supabase, and TypeScript in production ✅ POS and ERP systems that replaced manual workflows with real-time unified systems ✅ Claude API integrated in a live production SaaS — not a demo, a live product 𝗬𝗼𝘂 𝗺𝗮𝘆 𝗯𝗲 𝗮 𝗴𝗿𝗲𝗮𝘁 𝗳𝗶𝘁 𝗶𝗳 𝘆𝗼𝘂 𝗮𝗿𝗲 𝘁𝗵𝗶𝗻𝗸𝗶𝗻𝗴: 🔑 "I have a great SaaS or MVP idea but need it built right, not just built" 🔑 "My current developer keeps pushing the launch date and I'm running out of patience" 🔑 "I need a SaaS that handles real users from day one, not just a prototype" 🔑 "I want one full-stack developer I can trust, not a team I have to manage" 𝗪𝗵𝗮𝘁 𝘆𝗼𝘂 𝗴𝗲𝘁 𝘄𝗼𝗿𝗸𝗶𝗻𝗴 𝘄𝗶𝘁𝗵 𝗺𝗲: 🎉 One point of accountability — frontend, backend, database, deployment 🎉 Clean, documented, scalable code — not an MVP you rewrite in 6 months 🎉 Daily updates, US and EU hours overlap (UTC+5, flexible) 🎉 Direct communication — no account managers, no middlemen New to this Upwork history? My SaaS platforms were built through this profile, where I take on select direct projects. Sound like a fit? Send me your project details. I'll reply with a direct technical assessment — not a sales pitch. Full Stack Developer | Full Stack | MERN Stack Developer | React Developer | Node.js Developer | Next.js Developer | Full Stack React Developer | Full Stack Node.js Developer | Next.js Full Stack Developer | React Node Developer | MERN Developer | MERN Full Stack Developer | Full Stack MERN | MERN Stack | MERN MEAN | MEAN Stack Developer | MEAN Developer | MEAN Full Stack Developer | SaaS Developer | Full Stack SaaS Developer | Multi-Tenant SaaS | SaaS Application Development | SaaS Expert | SaaS | eCommerce Developer | Laravel Developer | Python Developer | API Developer | REST API | REST API Full Stack Developer | GraphQL Developer | Backend Developer | Backend Node.js | NestJS Developer | Web Developer | Web Application Developer | Web Application Development | Web Development | Full Stack Development | AI App Full Stack Developer | Cloud Developer | AWS | AWS Full Stack Developer | Azure | Google Cloud | Docker | DevOps | CI/CD | Microservices | Mobile App Developer | Full Stack Developer React Node | React | React.js | Node | MongoDB | .NET | .NET Developer | .NET Core | .NET Framework | .NET Angular | Full Stack .NET Developer | PERN | Full Stack Angular Developer | Angular Full Stack Developer

Need a production-ready SaaS platform, business dashboard, or web application built with Next.js, React, Node.js, and Supabase? I develop scalable full-stack products with secure authentication, clean architecture, reliable APIs, and maintainable code built for real business workflows. I specialize in developing SaaS applications, AI-powered web platforms, internal business tools, admin dashboards, client portals, and content-driven applications. My experience includes developing an AI-based construction management system, a live vehicle auction platform, business dashboards, backend systems, role-based applications, and data-driven web products used in real operational workflows. I can help you with: • Next.js and React web application development • Full-stack development using Next.js, Node.js, and TypeScript • SaaS MVPs, dashboards, client portals, and internal tools • Supabase Auth, PostgreSQL, and Row Level Security • User roles, permissions, subscriptions, and account management • REST API development and third-party API integrations • AI-powered web applications and intelligent product features • Sanity CMS development and headless CMS integrations • CMS schemas, reusable content components, and visual editing • Draft previews, publishing workflows, and localization • Real-time features, notifications, and data-driven interfaces • Existing Next.js codebase takeover and feature development • Performance optimization, caching, SEO, and Core Web Vitals • Vercel deployment, build debugging, and production fixes • Responsive frontend implementation from Figma I can work on a new application from the initial development stage or join an established product that needs additional features, architectural improvements, bug fixes, performance optimization, or ongoing support. For existing codebases, I first understand the current architecture and business requirements before making changes. This helps me introduce new functionality without creating unnecessary technical debt or disrupting working features. My core technologies include: Next.js, React, TypeScript, Node.js, Supabase, PostgreSQL, Sanity, Headless CMS, Tailwind CSS, REST APIs, MongoDB, Vercel, and AWS. I focus on clear communication, dependable delivery, clean implementation, and practical solutions that remain easy to maintain, scale, and extend. Send me your requirements, Figma design, CMS structure, or existing codebase, and we can discuss the next steps for your application.