React Developer | JavaScript | Next.js | TypeScript | Front-End Web Development Expert | 3+ years of experience 🌸 𝐖𝐚𝐫𝐦 𝐠𝐫𝐞𝐞𝐭𝐢𝐧𝐠𝐬 𝐨𝐧 𝐦𝐲 𝐩𝐫𝐨𝐟𝐢𝐥𝐞! To be brief, I’m a Front-End Developer who believes software should feel good - not overwhelming. I build interfaces that are clear, soft around the edges, and thoughtfully designed so people instantly feel comfortable using them. Clients come to me when they want a product that feels human, warm, and visually cohesive - not just another generic UI on the internet. 𝐂𝐎𝐑𝐄 𝐒𝐊𝐈𝐋𝐋𝐒 React, React Native, Next.js, JavaScript (ES6+), TypeScript, Redux Toolkit, React Query, Zustand, Tailwind CSS, HTML5, CSS3, SCSS, Material UI, Bootstrap, Shadcn/UI, WebSockets, REST API, Axios, Component Development, Responsive Web Design, UI/UX, Figma, Git, SPA Development, Performance Optimization. 𝐖𝐇𝐀𝐓 𝐈 𝐃𝐄𝐋𝐈𝐕𝐄𝐑 ✔️ Custom React applications with clean, reusable component architecture ✔️ Next.js websites focused on performance, SEO, and smooth navigation ✔️ UI libraries and design systems that help teams scale faster ✔️ API integrations (REST), secure data flows & state management ✔️ Pixel-perfect, mobile-first responsive layouts ✔️ Refactoring & bug fixing to “calm down” messy legacy code ✔️ Optimising for speed, accessibility, and overall user experience ✨ 𝐑𝐄𝐀𝐋 𝐑𝐄𝐒𝐔𝐋𝐓𝐒 ✨ ✦ SaaS Dashboard. Improved load time from 3.2s → 1.1s and created reusable components that cut development time by 40%. ✦ E-commerce (Next.js). Boosted mobile conversion by 23% through optimized performance and a smoother UI flow. ✦ Corporate Website. Migrated to Next.js and increased Lighthouse score from 62 → 96 with a refreshed, elegant UI. ✦ Component Library. Built 30+ reusable components that reduced feature delivery time by 50% and improved design consistency. 🎀 𝐌𝐘 𝐖𝐎𝐑𝐊𝐒𝐓𝐘𝐋𝐄 - Combine technical precision with a creative, feminine eye for design - Communicate clearly, kindly, and proactively - Help refine the product vision, not just “take tickets” - Deliver carefully crafted code you can rely on - Independent, organized, and easy to collaborate with 𝐏𝐄𝐑𝐅𝐄𝐂𝐓 𝐅𝐎𝐑 𝐏𝐑𝐎𝐉𝐄𝐂𝐓𝐒 𝐋𝐈𝐊𝐄 - SaaS dashboards & internal systems - Admin panels & analytics tools - Landing pages & brand websites - E-commerce UI & product configurators - Marketing pages & multi-step forms - Custom widgets, integrations & front-end tooling 💌🍫 Get in touch for a free online consultation or project estimate and let’s make your ideas happen! 𝐊𝐞𝐲𝐰𝐨𝐫𝐝𝐬 𝐭𝐨 𝐟𝐢𝐧𝐝 𝐦𝐲 𝐩𝐫𝐨𝐟𝐢𝐥𝐞 React developer, JavaScript developer, front-end developer, Next.js expert, TypeScript developer, UI developer, web developer, React components, responsive design, component architecture, state management, UX-focused development, API integration, SPA developer, performance optimization, React freelancer, Next.js freelancer, Front End Developer

I’m not just another freelancer—I’m a seasoned problem-solver with over 25 years of hands-on experience in programming, web development, game design, and software engineering. What sets me apart? I bring a rare mix of deep technical expertise and human insight—something no AI can replicate. In a world flooded with quick code and one-size-fits-all solutions, I provide thoughtful, strategic, and scalable results. With skills spanning HTML, CSS, JavaScript, Python, Java, Django, and WordPress—and extensive experience in game development using C# and Unity—I build solutions that go beyond function to deliver real value. I don’t just ship code; I solve real-world problems with creativity, precision, and care. Over the years, I’ve learned that tools may change—AI included—but the need for clarity, reliability, and genuine collaboration never goes out of style. I use AI where appropriate, but I also know when human experience matters most: understanding clients' goals, foreseeing edge cases, architecting sustainable systems, and adapting under pressure. If you’re looking for a developer who can not only write solid code but also think deeply, solve complex problems, and commit fully to your project’s success—let’s talk. "If God is for me, who can be against me?" Let’s build something meaningful together.

Senior Full Stack Developer | .NET Core, React, Next.js, Node.js | AI-Powered SaaS & Enterprise Solutions 🏅Top Rated Plus Full Stack Developer | 💯100% Job Success | 👨‍💻9+ Years Full Stack Developer | ⭐5★ Reviews As a Full Stack Developer I specialize in building SaaS platforms, AI-powered applications, scalable APIs, and enterprise-grade web solutions using .NET Core, React, Next.js, and Node.js. Over 9+ years, I've helped startups launch MVPs, scale platforms to thousands of users, and embed AI capabilities that actually add product value not just demos. Businesses hire me as a Full Stack Developer to turn ideas into production-ready products while taking full ownership of architecture, development, and end-to-end delivery. 𝗪𝗵𝗮𝘁 𝗜 𝗕𝘂𝗶𝗹𝗱 • SaaS Platforms, CRM, LMS & Marketplace Applications • AI Chatbots, RAG Systems, LangChain Agents & Workflow Automation • Enterprise Software & Custom Business Applications • Startup MVPs & End-to-End Product Development • Cloud-Native Architecture (AWS, Azure, GCP) • Real-Time Dashboards, Analytics & Reporting Systems • REST APIs, GraphQL, Microservices & Third-Party Integrations • High-Performance Backends & Multi-Tenant Database Architecture 𝗖𝗼𝗿𝗲 𝗧𝗲𝗰𝗵 𝗦𝘁𝗮𝗰𝗸 🎨Frontend: React.js, Next.js, Angular, TypeScript, JavaScript, Tailwind CSS, HTML5, CSS3 ⚙️Backend: .NET Core, ASP.NET, Node.js, NestJS, Express.js, REST APIs, GraphQL, Microservices 🗄️Databases: PostgreSQL, MongoDB, MySQL, MSSQL, Firebase, Supabase ☁️Cloud & DevOps: Microsoft Azure, AWS, Google Cloud, Docker, CI/CD, GitHub Actions, GitLab, Vercel 🤖AI & Automation: OpenAI, Azure AI, Generative AI, RAG, LangChain, LangGraph, AI Agents 𝗣𝗿𝗼𝗷𝗲𝗰𝘁 𝗛𝗶𝗴𝗵𝗹𝗶𝗴𝗵𝘁𝘀 • AI-Powered Content Generation & Publishing Platforms • Healthcare Appointment & Patient Management Systems • FinTech, Digital Banking & Financial Management Platforms • Online Training, LMS & E-Learning Platforms • Travel Booking & Reservation Applications • Marketplace, Community & Multi-Vendor Platforms • Business Process Automation & Workflow Systems • Investment, Trading, Analytics & Wealth Management Solutions 𝗪𝗵𝘆 𝗖𝗹𝗶𝗲𝗻𝘁𝘀 𝗖𝗵𝗼𝗼𝘀𝗲 𝗠𝗲 ✅ Top 3% of freelancers on Upwork, with 100% Job Success Score ✅ 9+ years delivering production-ready, scalable systems ✅ Full Ownership, frontend, backend, database, and cloud, end to end ✅ Ships Fast, MVPs and features delivered on aggressive timelines ✅ AI-Ready, native integration of modern AI tools into products ✅ Clean, secure, well-documented code built for long-term scalability ✅ Clear Communication milestone-driven, zero surprises Whether you're launching a new product, scaling an existing platform, integrating AI, or modernizing a legacy system let's talk about how to build it right. 🤝 Send me a message with your project details and let's get started. 𝗞𝗲𝘆 𝗦𝗸𝗶𝗹𝗹𝘀: Full Stack Developer | Senior Full Stack Developer | Full Stack Developer .NET Core | ASP.NET Developer | React Developer | Next.js Developer | Node.js Developer | NestJS Developer | Full Stack Developer .NET | Full Stack Developer MERN | Full Stack Developer MEAN | Full Stack Developer SaaS | SaaS Developer | Multi-Tenant SaaS Developer | SaaS Application Developer | AI Developer | AI-Powered Application Developer | LangChain Developer | Full Stack Developer API | API Integration | OpenAI API Developer | RAG Developer | AI Agent Developer | GraphQL Developer | REST API Developer | Microservices Developer | Azure Full Stack Developer | AWS Full Stack Developer | Web Application Developer | Expert Full Stack Developer | Cloud Developer | DevOps Developer | Docker Developer | PostgreSQL Developer | MongoDB Developer | TypeScript Developer | Angular Developer | Enterprise Developer | eCommerce Developer | Full Stack Web Developer | Backend Developer | API Integration Developer | Startup MVP Developer | Full Stack Developer | Web Development | Software Developer

Mobile developer with 14 years experience, 80+ shipped apps and more than 1M+ downloads. If you're starting a Flutter app from scratch, I take it from concept to the App Store. If your iOS or Android app has stalled, I get it shipping again. If a previous mobile app developer missed what you actually needed, that's where I usually come in. 𝗪𝗵𝗮𝘁 𝘆𝗼𝘂 𝗴𝗲𝘁 I work primarily in Flutter for smartphone apps, with native iOS and Android experience dating back to 2012. When backend or AI work is heavy, Python and Node.js handle it. Mobile app design happens early by a dedicated mobile app designer. 𝗪𝗵𝗮𝘁 𝟴𝟬+ 𝗮𝗽𝗽𝘀 𝘁𝗮𝘂𝗴𝗵𝘁 𝗺𝗲 Mobile app development starts with understanding the problem the product solves. A Flutter developer worth hiring flags problems before they become rebuilds. A few projects I've shipped as a mobile app developer: - Patient Gateway (UK) - Flutter app for medical transport with Firebase sync - Rheo (Switzerland) - Flutter app and PWA for vital signs via BLE biosensor - Inne Minilab (Germany) - fertility tracking with IoT BLE biosensor - ClosetBee (US) - Flutter AI wardrobe app, the kind of work I take on as an AI mobile app developer - MoveOn (Israel) - eco taxi app with route planning and payments - Warehouse App Set (UK, NDA) - 5 native apps for inventory and dispatch 𝗜𝗻𝗱𝘂𝘀𝘁𝗿𝗶𝗲𝘀 Healthcare, logistics, transportation, lifestyle, internal tools, AI integrations, fintech, travel, education. If you're looking for a mobile application developer or Flutter developer who thinks past the spec, that's the work I do. I've had clients reach out a year into a project after hiring the wrong mobile app developer first. Early hire saves months. Send a message with what you're building and I'll give a scope estimate and the first technical decision I'd want to settle. 𝗥𝗲𝗮𝗱𝘆 𝘄𝗵𝗲𝗻 𝘆𝗼𝘂 𝗮𝗿𝗲 Best, Stan --- - Experienced mobile app developer and experienced app developer with 80+ apps for iOS and Android since 2012, and 14 years as a mobile developer. - Senior mobile app developer leading architecture on every project, with MVPs launching in 8 to 12 weeks. - Senior Flutter developer with 20+ Flutter builds, first TestFlight usually in client hands by week 3. - Flutter app developer with user bases from a few thousand to 100,000+ monthly active. - iOS developer with 30+ apps published to the App Store and average ratings around 4.4 stars. - Senior iOS developer working in Swift with Objective-C and SwiftUI. - Senior iOS engineer shipping to iPhone, iPad, and Apple Watch with users in 15+ countries. - Android developer with 35+ Play Store apps across logistics, healthcare, and consumer categories. - Senior react native developer with a partner team with 30+ React Native apps and 5+ react native dev iterations on legacy code, plus mobile React and React developer logic across 3+ codebases for React native mobile app developer projects. - Full-stack developer running Node.js, Firebase, Supabase, and Python backends with APIs serving up to 100K+ requests per day. - Full stack developer process cuts bugs by ~60%. - Flutter mobile app developer work spans 25+ apps, including one Flutter app with 1M+ downloads on App Store. - Full-stack mobile app developer and web developer work covers dashboards cutting reporting time ~70% on 20+ projects, with Wordpress marketing sites alongside the mobile launch. - Native app development uses Swift for iOS work and Kotlin with Java for Android development. Hybrid app development uses Flutter and React Native. - iOS Development and Android App Development cover 65+ App Store and Play Store apps. - Backend runs in Laravel and Node.js with Python for AI, JavaScript and PHP for scripting. HTML and web design support webpages and admin panels. - API integration for payments, maps, auth. User profile creation is standard in every MVP. Mobile app bug fix work makes up roughly 20% of engagements. - Healthcare app development and healthcare SaaS development include data handling with HIPAA or GDPR compliance. Secure PHI handling and HL7 FHIR integration are standard. Rheo and Inne Minilab ship medical device BLE integration. Healthcare app developer engagements typically run 8 to 16 weeks. - Logistics app development covers real-time map integration, route planning, and inventory dispatch. Logistics app developer projects ship with offline sync and live tracking from day one. Flutter is my main stack, with 30+ Flutter projects shipped to production in the last four years. Flutter development treats mobile app performance as scope from day one. MVP mobile app development is where most projects start. App development quality matters most at MVP stage, and mobile app marketing readiness comes before launch. Where FlutterFlow fits the early phase, I work as a FlutterFlow developer compressing timeline by ~60%. Mobile app development FlutterFlow work happens when MVP is live but the team needs a Flutter developer to ship.

Senior React developer and full-stack developer with a track record of shipping fast, clean, production-ready React web applications. 100% Job Success Score. 150+ projects completed. AI-augmented workflow using Claude Code and Cursor means I deliver full-stack applications faster than most developers produce the same result manually, without cutting corners on architecture, tests, or handoff documentation. Every full-stack codebase I ship is something your team can extend without needing me on retainer. ✅ AI-augmented full-stack developer delivering at No-Code speed with professional React code quality ✅ 100% Job Success Score | 150+ projects completed | All five-star reviews on every completed project ✅ Senior React developer specializing in React, Next.js, Node.js, NestJS, and TypeScript ⭐⭐⭐⭐⭐ "Fanni is a fantastic React and Node.js developer. She's fast, sharp, and has a great eye for detail. It's been such a relief to hand her a React task and know it's going to be done right." - verified Upwork client Ready to ship? Send me a message and I will respond same day. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ What I build as a React developer and full-stack developer React web applications - dashboards, admin panels, SaaS frontends, and internal tools built with clean component architecture, Redux state management, and responsive design. I work as a full-stack developer across both layers so nothing breaks at the integration boundary. Node.js and NestJS backends - REST and GraphQL APIs, authentication, Stripe payments, real-time notifications, and CRUD operations connected to PostgreSQL, MongoDB, Supabase, and Neon. As a full-stack developer, I design frontend and backend together so the architecture is coherent end to end. Next.js full-stack applications - server-side rendering and static generation for products where Google ranking and Core Web Vitals matter as much as the feature set. My preferred full-stack framework for public-facing products where performance and search visibility are critical. TypeScript-first full-stack codebases - strict typing end to end, from React component props through to Node.js API response shapes, with consistent Redux state management. A full-stack developer codebase that stays predictable and maintainable as it grows, not one that becomes hard to touch after six months. AI-augmented full-stack development - Claude Code and Cursor are core to how I work as a full-stack developer. You get professional-grade JavaScript code at near no-code delivery speed, with the clean architecture, test coverage, and TypeScript typing that make the codebase maintainable long-term. Legacy modernization - structured refactors for React codebases that have become hard to extend. Improved TypeScript coverage, component architecture, and performance without rewriting everything from scratch. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Tech Stack as a React developer and full-stack developer ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ▸ Frontend: React, Next.js, Angular, TypeScript, JavaScript, Tailwind CSS, Material UI, Redux ▸ Backend: Node.js, Express, NestJS, REST APIs, GraphQL, Drizzle ORM ▸ Databases: PostgreSQL, MySQL, MongoDB, Supabase, Neon, Firebase ▸ AI Tools: Claude Code, Cursor, Copilot, custom LLM agents for code generation ▸ Testing and DevOps: Jest, Cypress, Playwright, Docker, CI/CD, Vercel, AWS ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ I am a senior React developer and full-stack developer specializing in React, Next.js, Node.js, NestJS, and TypeScript. I integrate advanced AI workflows including Claude Code, Cursor, and Copilot into my development process, which means you get your React application faster than with most developers, without giving up clean, well-documented code you actually own. Every React application I deliver is built so any senior developer can step in and continue the work without needing me on retainer. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🆙 If you are interested in discussing your project with me, make sure to click the 🟢INVITE🟢 button, and let's talk

🏆 12+ Years in Software Delivery | 246 Projects Delivered | 98% Client Satisfaction 🔐 GDPR & HIPAA | ISO 27001 Delivery Standards | Fortune 500 Experience Hi 👋 I'm Ostap, Senior Full Stack Developer and Team Lead representing a delivery team building SaaS Platform, Web Platform, and Web App / Web Application products across Healthcare, FinTech, AI, IoT, Logistics, Construction, Retail, Travel, and Enterprise. As a Full Stack Developer, I lead product delivery across architecture, frontend systems, backend systems, automation, cloud infrastructure, AI workflows, and mobile ecosystems, delivered 246 projects, helped platforms scale to millions of users. AI has fundamentally changed how I work. Claude Code is my daily driver. I use agentic orchestration patterns across the full development lifecycle, from planning and code generation to testing and review. As a React Developer, Frontend Developer, and Next.js Developer, I build dashboards, portals, CRM systems, admin panels, analytics systems, and Web App products used by 1,000+ businesses. As a Node.js Developer and Backend Developer, I deliver API Integration, REST API, authentication, RBAC, payment systems, automation workflows, Firebase infrastructure, and systems processing 50,000+ daily actions. Strong as: 🚀 Full Stack Developer with React, Node.js, Next.js, TypeScript, JavaScript, REST API, PostgreSQL, MongoDB, MySQL, AWS, Docker, Kubernetes - Automation reduced workflows from 30 sec to 3 sec. 🚀 React Developer / Frontend Developer / Next.js Developer: React, Next.js, TypeScript, JavaScript, HTML5, CSS3, Vue.js, Bootstrap, UX/UI, Landing Pages, Web Design - Modernization reduced maintenance costs by up to 50%. 🚀 Node.js Developer / Backend Developer: Node.js, REST API, API Integration, RBAC, authentication, payments, data processing, automation, Firebase, cloud-native architecture - Monitoring accuracy improved by 45% with 40% less alert noise. 🚀 Python Developer: AI Implementation, OpenAI, Claude, Llama, LLM workflows, analytics, monitoring, automation systems - Analytics systems process 35,000+ automated records. 🚀 PHP Developer / WordPress Developer: PHP, WordPress, CMS platforms, business websites, portals, integrations, and scalable content systems. 🚀 Mobile Developer - Mobile ecosystems reached 280,000+ users, 323,000+ downloads, and 82 countries. ✔ Full Stack Developer delivery for SaaS Platform and Web Platform products — 246 projects from MVP to scalable production. ✔ React Developer delivery for dashboards, portals, CRM systems, marketplaces, and analytics platforms supporting 1,000+ businesses. ✔ Frontend Developer execution focused on maintainable UI, responsive Web App experiences, and long-term product growth. ✔ Next.js Developer delivery for production-ready SaaS interfaces, landing pages, customer portals, and Web Application products. ✔ Node.js Developer delivery for backend architecture, REST API, API Integration, payment workflows, RBAC, authentication, and automation systems. ✔ Backend Developer ownership for scalable databases, cloud infrastructure, data processing, monitoring systems, and enterprise integrations. ✔ Full Stack Developer + React Developer collaboration for MVP launches in as little as 3 months and platforms supporting millions of users. ✔ Frontend Developer + Next.js Developer delivery for modern Web Platform experiences across Healthcare, FinTech, AI, IoT, Construction, Logistics, Retail, and Travel. ✔ Node.js Developer + Backend Developer delivery for automation systems generating $100,000+ annual operational savings. Need a Full Stack Developer to own architecture, delivery, and roadmap execution? I can lead the product side while our engineering team scales implementation. Need a React Developer, Frontend Developer, or Nextjs Developer to improve your SaaS Platform UI, dashboards, portals, or Web App experience? We can add focused frontend capacity without slowing delivery. Need a Nodejs Developer or Backend Developer to stabilize APIs, automation, integrations, payments, or cloud infrastructure? We can strengthen the backend while keeping product delivery moving. For AI, automation, and data-heavy work, our team can add a Python Developer experienced in AI workflows, analytics systems, and automation pipelines processing 35,000+ records. For CMS, legacy modernization, and business platforms, our team can add a PHP Developer and WordPress Developer for websites, portals, integrations, and content-driven ecosystems. For real-time apps and mobile-connected products, we can add Firebase Developer capacity for authentication, notifications, analytics, and cloud-connected infrastructure. Need extra capacity? Full Stack Developer, React Developer, Frontend Developer, Nextjs Developer, Nodejs Developer, Backend Developer — one team, measurable delivery. 📩 Send an Invite, or contact in DM on Upwork — let's discuss your SaaS, Web Platform, MVP, AI Product, Mobile App, or Web App.

🏆 Top Rated Full Stack Developer 🎯 100% Job Success Score 💰 $100K+ Earned on Upwork ⏰ 8,000+ Hours of Proven Client Success 💎 10+ Years of Full Stack Development Experience 🚀 36+ Successfully Delivered Projects ⚡ Expert in SaaS, Web Applications & Business Platforms Need a Full Stack Developer who can turn your idea into a fast, scalable, and reliable web application? I help startups, businesses, and enterprises build modern web applications, SaaS products, dashboards, customer portals, and business systems that solve real problems and support long-term growth. I don't just build websites. I build complete software solutions that handle real users, real data, and real business operations. With 10+ years of experience in Full Stack Development, I bring strong technical expertise, business understanding, and a product-focused mindset to every project. What I Do Best • Full Stack Web Application Development • MERN Stack Development • SaaS Platform Development • Startup MVP Development • Dashboard & Admin Panel Development • Custom Business Software • API Development & Integrations • Database Architecture & Optimization • Cloud Deployment & DevOps • Performance & Scalability Optimization My goal is to build applications that remain fast, secure, and scalable as your business grows. 🏅 Types of Projects I Build ➡️ SaaS Platforms Subscription-based products with authentication, user management, payments, reporting, and analytics. ➡️ Business Management Systems CRM, ERP, workflow automation, internal tools, and business process management solutions. ➡️ E-Commerce Platforms Custom online stores, customer portals, payment systems, and order management solutions. ➡️ Startup MVPs Fast and scalable MVP development to help founders validate ideas and launch quickly. ➡️ Dashboard & Reporting Systems Real-time analytics, business intelligence dashboards, and reporting platforms. ➡️ Enterprise Applications Large-scale web applications built for security, reliability, and long-term growth. Technology Stack Front-End ➡️ React.js ➡️ Next.js ➡️ JavaScript ➡️ TypeScript ➡️ HTML5 ➡️ CSS3 ➡️ Tailwind CSS ➡️ Bootstrap ➡️ jQuery Back-End ➡️ Node.js ➡️ Express.js ➡️ NestJS Databases ➡️ MongoDB ➡️ PostgreSQL ➡️ MySQL ➡️ Firebase ➡️ Supabase APIs & Integrations ➡️ REST APIs ➡️ GraphQL ➡️ Third-Party APIs ➡️ Payment Gateway Integrations ➡️ Authentication Systems DevOps & Cloud ➡️ Docker ➡️ Kubernetes ➡️ GitHub ➡️ GitLab ➡️ CI/CD Pipelines ➡️ AWS ➡️ Azure ➡️ Google Cloud Platform Industries I've Worked With ✔ SaaS Products ✔ E-Commerce ✔ FinTech ✔ Healthcare ✔ Education & E-Learning ✔ Real Estate ✔ Logistics & Supply Chain ✔ Travel & Hospitality ✔ Social Media Platforms ✔ CRM & ERP Systems ✔ Business Automation Solutions ⭐ My Working Style ✔ Clear Communication ✔ Daily Progress Updates ✔ Agile Development Process ✔ Clean & Maintainable Code ✔ Fast Response Time ✔ On-Time Delivery ✔ Long-Term Support How I Work 1. Understand I learn about your business goals, users, and requirements. 2. Plan I design the right architecture and development roadmap. 3. Build I develop scalable, secure, and maintainable applications. 4. Test Every feature is tested for quality, security, and performance. 5. Deploy I launch applications using modern cloud infrastructure and best practices. 6. Support I provide ongoing maintenance, improvements, and long-term support. 🤝 What You Get ✔ End-to-End Full Stack Development ✔ Scalable & Secure Architecture ✔ Fast & Responsive Applications ✔ Clean & Maintainable Code ✔ Reliable Communication ✔ Long-Term Development Partner If you're building a serious product and want it built the right way, let's connect. I'm ready to help you build, launch, and scale your next project. Regards, Raj Jariwala

React frontend full stack developer 12 years of experience in full stack development, AI development , complex web applications. React React.js | Next Next.js | Express Express.js | Node.js Node | JavaScript Js | AI developer , pipecat , RTVI , voice assistant , Stripe ✅ Generic Software Development Expertise 🔹 AI dailybots , pipecat , RTVI 🔹 Development of complex web applications 🔹 API development of for iPhone, Android, React apps. 🔹 Development of admin panel , dashboards , CRM , CMS 🔹 Website development ✅ Languages Frameworks 🔹 Python ( Django ) 🔹 JavaScript ( React JS Next.js Node.js Express ) ✅ Databases 🔹 MySQL 🔹 Redis 🔹 MongoDB 🔹 PostgreSQL 🔹 Redis ✅ Libraries, technologies, API’s 🔹 Zapier 🔹 n8n 🔹 Retell 🔹 Twillio 🔹 Elevenlabs 🔹 OpenAI 🔹 Pipecat 🔹 Contentful 🔹 Google API 🔹 Facebook API 🔹 Twitter API 🔹 Youtube API 🔹 RESTFull API 🔹 OKPAY API 🔹 JSON 🔹 XML 🔹 Push Notifications ✅ Experience with Environments Tools / Other 🔹 Redmine 🔹 GIT 🔹 Bug tracking systems: JIRA 🔹 Docker 🔹 Linux Ubuntu ✅ Languages 🔹 English – fluent 🔹 Ukrainian – native 🔹 Russian ✅ Next Steps I’d be thrilled to explore how we can ensure your project’s success. Are you available for a free 30 minute consultation? In this session, we’ll review our services, methodologies, communication process, and pricing structure. We’ll also dive into your project details to craft a tailored plan with a timeline and cost estimate. Rest assured, we’re flexible and can accommodate a wide range of budgets. Feel free to message me if you’d like to schedule a meeting, and I’ll provide you with an Upwork scheduler link. ✅ Highlighted Skills Full Stack Development React React.js Next Next.js Express Express.js Node.js Node JavaScript Js AI developer , pipecat , RTVI voice assistant devops php laravel react native developer ux designer erpnext laravel php developer metronic symphony simfony web developer playable ads react wordpress developer full stack developer web developer python developer backend developer sql mysql database web researcher javascript developer full stack developer front end developer full stack php "php laravel" "react native developer" "devops" "laravel php developer" "symfony php developer" "metronic" "symphony" "symphony developer" "web developer" "playable ads" "react" "website design" wordpress developer website design seo Currently i am not working with Laravel | CodeIgniter | Vue.js Vue | Angular |

👋 Hi there, I'm Alina! I'm a Full Stack Developer, web developer, and mobile app developer with 9+ years of commercial experience in software engineering, helping companies build scalable, secure, and high-performing digital products. My work follows ISO 9001 and ISO 27001 security standards, ensuring enterprise-level reliability. With 180+ successful projects and 20,000+ development hours, I specialize in complex Web and Mobile Application development, AI integrations, and cloud architecture. As a dedicated Full Stack Developer and Python Full Stack Developer, I help businesses automate workflows, optimize performance, and scale products using React, Node.js, Python, and AWS. Whether you need a skilled react developer or a versatile wordpress developer, I bring the technical expertise to deliver reliable systems. 🏆 Web Developer & Full Stack Developer Solutions: ✔️ 9+ years of experience as a Full Stack Developer building scalable web platforms, SaaS products, and AI-driven applications. ✔️ 180+ high-performance projects across eCommerce, SaaS, healthcare, fintech, and enterprise systems delivered as a Full Stack Developer AI specialist. ✔️ 20,000+ engineering hours as a Full Stack Developer, software engineer, and AI integrator. ✔️ Global experience across 40+ countries including the US, UK, Western Europe, and Australia. ✔️ Development speed increased by 60–70% using AI-assisted engineering workflows. ✔️ Backend and database optimization improving performance by up to 60%. ✔️ AI automation systems reducing manual operational work by up to 85%. ✔️ Cloud infrastructure improvements enabling 45% more concurrent users with reduced AWS costs. 📌 AI Systems & Automation: 🔹 Custom LLM and RAG architectures built with Python, LangChain, and vector databases by a Python Full Stack Developer. 🔹 AI chatbots and automation agents improving operational efficiency for SaaS and enterprise systems, delivered by a Full Stack Developer AI. 🔹 AI-assisted QA workflows reducing manual testing costs by 70%. 🔹 Model-agnostic LLM routing using OpenAI, Claude, and Gemini. 📌 Custom Web Development: 🔹 SaaS platforms built with Next.js, React, Node.js, and NestJS by an expert react developer and Full Stack Developer. 🔹 Secure web applications designed by an experienced web developer following ISO security standards. 🔹 Rapid MVP development using AI-first engineering approaches. 🔹 Custom CMS and scalable platforms implemented by a skilled wordpress developer. 📌 Backend Architecture & Cloud Infrastructure: 🔹 High-performance cloud architecture using AWS, Docker, and modern DevOps practices. 🔹 Database optimization with PostgreSQL and Supabase improving query speeds by 60%. 🔹 Microservices and CI/CD pipelines increasing system scalability. 🔹 Automated billing and internal automation systems built by a Python Full Stack Developer. 📌 Mobile & Cross-Platform Applications: 🔹 Cross-platform mobile applications using React Native and Flutter. 🔹 Backend-to-mobile data synchronization reducing latency and improving UX. 🔹 AI-powered recommendations and secure payment integrations. 📌 Scalable Architecture & System Optimization: 🔹 High-availability cloud infrastructure for scalable applications. 🔹 Advanced dashboards and admin panels using React, Tailwind, and modern UI frameworks. 🔹 Server-side rendering and caching strategies improving performance and scalability. ✅ 60–70% faster development through AI-assisted engineering workflows. ✅ ISO 9001 & ISO 27001 aligned development standards. ✅ 30% lower server costs through optimized backend architecture. ✅ Advanced AI integrations (GPT, Claude, LangChain) delivered by a Full Stack Developer AI. ✅ Rapid MVP delivery in 2–3 months by an experienced Full Stack Developer, react developer, and web developer. Looking for a Full Stack Developer | Full Stack Developer AI | Python Full Stack Developer who can design scalable systems, build reliable architecture, and turn ideas into production-ready products? Let’s connect! ☎️ 22.06.2026

💼 AI Developer | OpenAI developer | AI developer Zapier | Python data engineer for real-time data pipeline | AI developer LangChain 🏆 TOP RATED PLUS | 💰 $5M+ Client Revenue | 💼 111+ Projects Delivered | ✅ 11,000+ Upwork Hours 💡 Clients Achieved: 🚀 Faster delivery – AI systems cut weeks of manual work 💰 Revenue growth & efficiency – automated workflows and AI agents increased ROI ⏱️ Time savings – streamlined operations, reduced human effort ✅ Reliable, production-ready AI – systems deployed safely and scaled in real-world environments 📊 Data-driven insights – AI-powered analytics, RAG pipelines, and persona simulations improved decision-making I am an AI Developer and OpenAI developer specializing in designing and deploying production-ready AI systems that combine advanced machine learning models with scalable backend engineering. As an AI developer LangChain specialist and AI developer Zapier expert, I help businesses turn complex AI concepts into reliable real-world solutions. I also work as a python data engineer for real-time data pipeline development, building streaming, event-driven, and analytics systems for AI-powered applications. ⚡🤖 AI Agents & Autonomous Systems 🤖 As an AI Developer and AI developer LangChain engineer, I create intelligent agents capable of reasoning, planning, memory retention, and multi-step workflows. These systems integrate OpenAI developer APIs and AI developer Zapier automation layers for real business execution and reliability. Voice AI & Communication Platforms 🎙️ I develop low-latency real-time AI voice systems using Twilio and STT → LLM → TTS pipelines, built as an AI developer and OpenAI developer for scalable conversational AI with backend-controlled logic, interruption handling, and production deployment. RAG Pipelines & Data Intelligence 📚 As an AI developer LangChain specialist and OpenAI developer, I implement Retrieval-Augmented Generation pipelines for fast, accurate, and auditable access to internal data. This includes embeddings, metadata pipelines, vector databases (Pinecone, Qdrant, Weaviate), and python data engineer for real-time data pipeline architectures. Backend Engineering & Cloud Deployment ☁️ I build robust Python/TypeScript backend systems with FastAPI, Django, and Node.js, acting as both AI developer and python data engineer for real-time data pipeline solutions. I deploy scalable systems on AWS, GCP, and Azure using Docker, Kubernetes, monitoring, and autoscaling. 🚀 Selected Projects Monitoring & Summarization Tool ⚖️ – Automated regulatory updates, cutting manual review time and delivering clear summaries. Built by an AI Developer to make compliance faster and smarter. I Persona Simulation 👥 – Transformed Reddit discussions into interactive synthetic personas for marketing insights. Engaging AI experiences designed by an AI Developer. Centefuse AI – Content Generation ✍️ – MVP platform for automated social media content and scheduling. High-quality output with minimal client effort, engineered by an AI Developer. Waste Classification App ♻️ – Mobile AI solution for classifying and estimating waste quantities. Flexible, hardware-free, and efficient – crafted by an AI Developer. AI Script Generator 🎬 – Generative AI for screenwriters to structure stories and draft scripts quickly. Accelerates ideation while preserving creativity, built by an AI Developer. Client Testimonials ⭐⭐⭐⭐⭐ “Great work, very professional. Good at gathering input. Talented variety of staff.” – AI Chat, Recorded Calls, Coaching AI Platform ⭐⭐⭐⭐⭐ “Very professional and technically capable. He was able to work within my budget and deliver a top notch product.” – Marketplace Development II ⭐⭐⭐⭐⭐ “Outstanding work during the discovery phase. The team was prepared, communicated clearly, and proposed elegant, efficient solutions that exceeded our expectations.” – AI-powered Treatment Writer Why Clients Work With Me 💼 Delivery of clean, maintainable, production-ready AI solutions Expertise bridging AI models and backend engineering as an AI Developer Predictable results with scalable architectures Clear communication and collaborative approach