Full Stack Developer with 4+ years of commercial experience building scalable SaaS platforms, CRM systems, AI-powered applications, marketplaces, booking platforms, internal tools, and custom business software. Over the years, I've contributed to 20+ successful projects, helping startups and growing businesses launch products faster, automate workflows, and improve operational efficiency. As a Full Stack Developer, I specialize in delivering complete end-to-end solutions - from responsive frontend development and modern UI implementation to backend architecture, API development, database design, cloud infrastructure, and AI integrations. 💻 Technologies Frontend Development React Next.js (13/14/15) TypeScript JavaScript Redux Toolkit Zustand Tailwind CSS SCSS Framer Motion Three.js React Spring Material UI Ant Design shadcn/ui. Experienced Full Stack Developer with strong expertise in building SEO-friendly applications using SSR, SSG, ISR, and CSR. I focus on performance optimization, responsive design, accessibility standards, and pixel-perfect UI implementation. Backend Development Node.js NestJS Express.js REST APIs GraphQL WebSockets Microservices Event-Driven Architecture Authentication & Authorization (JWT, OAuth 2.0, SSO), background jobs, queue systems, automation pipelines, and AI-powered services. As a Full Stack Developer, I have built backend systems, integrated complex third-party services, payment providers, notification systems, and real-time communication features. I also work with AI integrations including OpenAI, Claude, ChatGPT, vector databases, and custom automation workflows. Databases PostgreSQL MySQL MongoDB DynamoDB Redis Supabase Firebase Prisma TypeORM MikroORM Knex. I have experience designing scalable database architectures, optimizing complex queries, implementing caching layers, indexing strategies, and ensuring data consistency across production environments. Cloud & DevOps AWS (EC2 Lambda S3 CloudFront RDS API Gateway Cognito) Google Cloud Platform Docker Docker Compose Nginx PM2 CI/CD GitHub Actions GitLab CI/CD monitoring VPS setup SSL configuration reverse proxies and production deployments. As a Full Stack Developer, I regularly deploy and maintain cloud-native applications, serverless architectures, and scalable backend services designed to support growth from MVP stage to production environments. ⚙Key Expertise • 4+ years of Full Stack Development experience • 20+ successfully delivered project • 50+ integrations with external APIs and third-party services • 10+ SaaS, CRM, and internal business platforms • 15+ payment, billing, and subscription-based implementations • 10+ AI-powered features and automation workflows delivered • 30–50% performance improvements on multiple production applications • 10+ cloud-hosted applications deployed and maintained • Real-time systems with WebSockets, notifications, and live updates • Secure authentication, authorization, and user management systems 🏭 Industries • FinTech & Financial Services • Healthcare & Medical Platforms • E-commerce & Marketplaces • Logistics & Transportation • Real Estate & PropTech • Education & EdTech • AI Products & Automation Platforms • CRM & B2B SaaS Solutions • Booking & Reservation Systems • Security & Monitoring Platforms As a Full Stack Developer, I can help with new product development, existing codebase maintenance, feature expansion, performance optimization, third-party integrations, technical architecture, and long-term product growth. Whether you need an MVP built from scratch, a complex SaaS platform, AI-powered functionality, cloud infrastructure, payment integrations, or long-term product development, I can help take your project from concept to production. Available for both short-term projects and long-term collaborations. Let's build a scalable, production-ready solution that delivers measurable business value.

Certified Shopify Developer, Mobile App Developer, and Odoo ERP Specialist with 12+ years of experience helping businesses build, scale, and automate their operations. I specialize in Shopify development, Shopify Plus, custom theme development, store migrations, eCommerce automation, mobile app development, and Odoo ERP implementation. My goal is to deliver scalable solutions that improve customer experience, streamline operations, and increase business efficiency. My Shopify expertise includes custom store development, theme customization, Shopify Plus implementations, store migrations, API integrations, Shopify Flow automation, Klaviyo automation, order processing automation, inventory management, subscription solutions, B2B and wholesale portals, payment gateway integrations, and conversion rate optimization. My mobile app experience includes developing iOS and Android applications using Flutter, React Native, Ionic, and native technologies. I have worked on marketplace platforms, fintech applications, healthcare solutions, GPS tracking systems, real-time applications, Firebase integrations, push notifications, and App Store and Google Play deployments. As an Official Odoo Partner, I have extensive experience implementing and customizing Odoo ERP solutions including CRM, Sales, Inventory, Accounting, Manufacturing, Purchasing, Human Resources, eCommerce, workflow automation, and custom module development. My strengths include: Shopify Development Shopify Automation Mobile App Development Odoo ERP Implementation CRM and Business Automation API Integrations SaaS Development Ecommerce Solutions Business Process Optimization I am committed to delivering clean, scalable, and maintainable solutions with clear communication, reliable project execution, and long-term support. Available for full-time, part-time, and long-term projects.

Mobile apps rarely fail at launch. They fail when they scale, break, or stop delivering value to users. ***That is where the real work begins*** I work with startups and businesses to build mobile applications that are not just launched, but are stable, scalable, and built to perform under real user demand. From idea to App Store and Google Play, the focus stays on reliability, speed, and long-term usability. Over the past 10+ years, I have delivered 50+ mobile apps across iOS and Android, covering everything from early-stage MVPs to production-scale platforms used by growing user bases. 🔹Technology Stack: - Mobile Apps: React Native, iOS (Swift, SwiftUI), Android (Kotlin, Java), Flutter - AI/ML: ChatGPT, GPT-4o, Claude, RAG, NLP - Backend: Node.js, Python, Firebase, REST APIs - Cloud & Database: AWS, Google Cloud, MySQL, MongoDB - UI/UX Design: Figma, Adobe XD Important Note: All discussed ideas and project details are protected under a strict NDA. 🏆𝗔𝗰𝗵𝗶𝗲𝘃𝗲𝗺𝗲𝗻𝘁𝘀: - 10+ Years of Experience in mobile app development - 50+ Successful App Launches on App Store & Google Play - Fluent English & Client-Verified Communication Skills - 𝐂𝐥𝐢𝐞𝐧𝐭-𝐅𝐢𝐫𝐬𝐭 Philosophy: Quality, Satisfaction & Long-Term Partnerships 🌐 𝐈𝐧𝐝𝐮𝐬𝐭𝐫𝐲 𝐄𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞:- 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩𝐬: Dating Apps | Taxi Booking | Food Delivery | Health & Fitness | Education | E-commerce | Social Chat Apps | Music | Restaurant Apps 🔹𝐒𝐤𝐢𝐥𝐥𝐬 & 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞:- - AI & Chatbots: ChatGPT, OpenAI, AI-powered real-time chat - Backend & APIs: Node.js, Python, Firebase, REST API integration - Payments & Subscriptions: PayPal, Stripe, Razorpay, Google Pay, Apple Pay, In-App Purchases - Real-time & Media: Chat, Audio/Video Calls, Live Streaming - Location Services: Google Maps, Real-time Tracking, Geolocation - App Deployment: App Store & Play Store - AI and Chatbot Development: AI-powered chat, ChatGPT, OpenAI, Gemini, Deepseek, Replit, n8n 🔹𝐂𝐎𝐍𝐒𝐔𝐋𝐓𝐀𝐓𝐈𝐎𝐍 – • The best technology stack • App architecture & scalability strategies • Cost & timeline estimates tailored to your needs • Solutions for API integration, UI/UX, real-time features, and more Message me now to schedule a consultation! #MobileAppDeveloper #MobileAppDevelopment #AppDevelopment #iOSAppDevelopment #AndroidAppDevelopment #NativeAppDevelopment #CrossPlatformDevelopment #Flutter #ReactNative #Swift #Kotlin #Java #SwiftUI #AndroidSDK #Dart #APIIntegration #RESTAPIs #BackendDevelopment #Firebase #NodeJS #CloudServices #UIUXDesign #PushNotifications #RealTimeChat #InAppPurchases #PaymentGatewayIntegration #LocationServices #AppStoreDeployment #PlayStoreDeployment #AppOptimization #PerformanceTuning #AIIntegration #ChatGPTAPI #MachineLearningMobile #ARMobileApps #EcommerceApp #SocialAppDevelopment #FinTechMobile #HealthTechApp #OnDemandApps

I'm a Back End Developer with extensive experience in building high-quality sites. I have vast experience building Web services and APIs. I am specialised in backend development using Express in Nodejs or Spring Boot in Java. I love solving problems and I am committed to serve my customers well.

TOP RATED ✅ | 100% Job Success ✅ Senior Full Stack Developer with 7+ years of experience building production web and mobile applications with the MERN stack, Next.js, and Supabase. I've built SaaS platforms, marketplaces, dashboards, and internal tools end to end — auth, billing, role-based access, APIs, and the edge cases that only show up after real users arrive. Most developers can build screens. The harder part is the system behind them: the data model, permissions, payment flows, third-party integrations, and deployment. That's where I fit in. I work AI-first — using Claude Code, Cursor, and Codex daily to compress weeks of work into days without cutting corners on quality or test coverage. This means faster MVPs, quicker iterations, and more runway for your budget. 🚀 Have an MVP idea? Let's talk — I'll turn it into a working product with frontend, backend, database, auth, and payments. 🐛 Bug that needs fixing ASAP? If I can't resolve it, NO CHARGE. 🛠️ Inherited a messy React or Next.js codebase? I'll clean it up and make it maintainable. 🤖 Want AI features in your product? I've shipped production AI features and know how to do it properly — not bolted on for the buzzword. 🕹️ Need an extra senior player on your team? I integrate fast and take ownership. Primary expertise: Frontend: React, Next.js (App Router, SSR/ISR), TypeScript, Tailwind CSS, shadcn/ui Backend: Node.js, Express, Nest.js, REST & GraphQL APIs Supabase: Auth, Row Level Security, Realtime, Edge Functions, Storage Databases: PostgreSQL, MongoDB, Redis Payments: Stripe, Stripe Connect (subscriptions, marketplace payouts, escrow flows) Mobile: React Native, Expo (iOS + Android from one codebase) AI Integrations: OpenAI GPT-4o, Anthropic Claude, Google Gemini, pgvector for semantic search AI-Assisted Dev Tools: Claude Code, Cursor, Codex, Lovable — used daily DevOps: Vercel, AWS, Docker, CI/CD pipelines Services I provide: - Full-stack SaaS development from idea to deployed product 🚀 - Next.js + Supabase builds — the fastest path from zero to production-ready MVP - Dashboard, admin panel, CRM, and internal tool development 🛠️ - Marketplace and booking platform builds with payment flows - API development, third-party integrations, and webhook handling - Rescuing and refactoring existing React/Next.js codebases - Rapid AI-assisted prototyping to ship MVPs and features 3–5x faster than traditional timelines - Staging, QA, and production environment setup and deployment I can resolve issues at any layer of the application, so you never have to wait on a narrowly specialised developer. I'm ready for any demo or evaluation work as a next step. Let's build something that holds up in production. 🚀

I am a Certified Full Stack Developer with expertise in React, Node.js, Next.js, AWS, SQL, and NoSQL databases. I specialize in building fast, secure, and scalable web applications that deliver real business value. With strong experience across both front-end and back-end development, I focus on writing clean, maintainable code, optimizing performance, and ensuring seamless deployment on the cloud. My goal is to provide reliable, high-quality solutions that help clients turn their ideas into successful digital products.

React Developer | Full Stack Developer | React Node - 100+ shipped projects taught me one thing: clients don’t need more code, they need products that load fast, scale safely and make money 👋 Hey, there! My expertise centers around elevating companies and startups with robust, scalable web solutions, leveraging advanced front-end technologies like React and Next.js. Our engineering team is hungry 🍽 to solve your needs through in-time delivery of high-impact tech solutions - whether you need a custom platform ⚙, a revamped UI 🛡, or a powerful enterprise application. React & Full Stack Track Record 10+ Years of Experience as a React Developer & Full Stack Developer |100+ Delivered Projects | 30+ Enterprise Platforms | 20+ High-Load Applications | 25+ eCommerce Solutions Trusted by Founders & Teams ⭐ “We hired CreativeIT because we weren’t happy with our previous developer’s performance. CreativeIT successfully completed a working app.” Dan Douglas, Co-founder, Deep English, USA. ⭐ “We’re very happy with their working methods.” Valery L, CTO, Starly[dot]io, Baltic states. ⭐ “CreativeIT picked up where a previous vendor left off. They looked at the existing code and designs and created a plan for how to move forward.” Elliot Ledley, Project Manager at 2Shoes, USA. ⭐ “CreativeIT’s ability to provide a complete product in a timely fashion was most impressive. In addition, communication was always clear.” Michael Oppel, CFO at Audience Response System, USA. ⭐ “The team's ability to work fast impresses us!”. Director SE, Hospitality & Leisure (Germany). As a react developer ( full stack developer ) working alongside roles like project and delivery manager, full stack web developer, wordpress developer, and full stack developer react specialist, I collaborate closely with stakeholders to bring ideas to life. My portfolio includes enterprise platforms, custom web design solutions, scalable full stack web developer applications, and mobile products where I act as a mobile app developer and react native developer delivering iOS and Android apps. I contribute as a python developer, working with python, fastapi, and backend services, while supporting integrations through stripe and scalable architectures. My experience spans wordpress ecosystems, laravel vue projects, and solutions using ruby on rails, ensuring flexibility across different business needs. Also as an expert full-stack developer I worked with php, laravel, react and web design. Why choose me: ✅ Top Rated on upwork as a React Developer & Full stack developer, delivering high-caliber code alongside strong business expertise. ✅ Proactive, delivery-focused - honoring tight schedules while optimizing for maximum ROI. ✅ Flexible - I collaborate across full stack, web development, website design, ui/ux design, and game developer projects. ✅ Time & Material basis - pay only for productive hours. My strong side as a Full Stack Developer React UI developer 🔥 Front-end: javascript, React, react typescript, angular, vue, redux, zustand, mobx, graphql, html5, css3, material ui, and tailwind css. 🔥 Back-end: node.js, next.js, nest.js, express, fastify, php, laravel vue, ruby on rails, python, and fastapi. 🔥 Databases: postgres, mysql, redis, mongodb. 🔥 Cloud: firebase, docker, aws, and supabase. 🔥 Enterprise: c# azure function app services for scalable backend processing. With 10+ years of experience, my expertise centers around elevating companies and startups with robust, scalable web development solutions, leveraging advanced technologies - React, React TypeScript, Next.js React, and Vue - alongside strong coding practices in JavaScript, PHP, and Python. I also work confidently across React python projects where modern frontend interfaces need to connect with scalable Python-based backends. As a Cursor developer ( full stack cursor, supabase cursor ) specializing in Veeva solutions for museums and art curators, I help bring art and cultural heritage to life through technology. From designing custom apps and digital catalogs to optimizing workflows and preserving collections, I enable art institutions to connect with their audiences in a more interactive, insightful, and efficient way. 🤝 Let's collaborate! Contact me for a project audit, technical consultation, or to develop a roadmap for your project - whether you need a custom platform, sophisticated enterprise application, or a well-designed website. Looking forward to a long-term, win-win partnership. Cheers from Vilnius, Raman

Having a decade of mastery in 🔸 Front-end Development: JavaScript, React.js, Next.js, HTML5, CSS3, Bootstrap, Tailwind CSS, jQuery 🔸 Back-end Development: Node.js, PHP, MySQL, SQL Server, MongoDB, Redis, Apps Script, Ruby 🔸 CMS & Frameworks: WordPress, Joomla, Codeigniter, Laravel, Express.js, etc 🔸 Data Scraping & Automation: Web scraping, Data extraction, API scraping, Puppeteer, Playwright 🔸 Google Apps Script, Google Spreadsheets API, Google Sheets 🔸 Cloud Platforms & Services: Google Cloud Platform (GCP), Firebase, Amazon Web Services (AWS) Result oriented developer, able to quickly grasp new technologies. I love to help you solve your web related problems: building, fixing, migrating, customizing, optimizing.

Senior Full Stack Developer | React | Node.js | AI & SaaS Applications I am Shivam, a Senior Full Stack Developer with multiple years of experience building scalable web applications, SaaS platforms, mobile applications, and AI-powered products. As a Full Stack Developer, I have helped startups and businesses transform ideas into production-ready products. I have worked with 20+ clients globally, maintained a 100% Job Success Score, and completed 1300+ hours on Upwork. About Me I am a results-driven Full Stack Developer specializing in frontend development, backend architecture, API integrations, databases, cloud infrastructure, and AI systems. As a Full Stack Developer, I take ownership of the entire software development lifecycle, from planning to deployment and scaling. I have delivered 30+ web applications in production environments. Every project I build as a Full Stack Developer focuses on scalability, maintainability, security, and performance. Full Stack Development Expertise As a Full Stack Developer, I build complete product ecosystems, including web applications, APIs, databases, dashboards, and cloud deployments. Frontend Development ✔ React.js ✔ Next.js ✔ Angular ✔ Vue.js ✔ TypeScript ✔ JavaScript ✔ Tailwind CSS ✔ Material UI Backend Development ✔ Node.js ✔ Express.js ✔ NestJS ✔ Python ✔ FastAPI ✔ Django ✔ REST APIs ✔ GraphQL Databases & Cloud ✔ PostgreSQL ✔ MongoDB ✔ MySQL ✔ Firebase ✔ Supabase ✔ AWS ✔ GCP ✔ Azure Mobile Development ✔ React Native ✔ Ionic ✔ Capacitor SaaS Development As a Full Stack Developer, I create: * SaaS Platforms * CRM Systems * Admin Dashboards * Marketplaces * Subscription Platforms * Multi-tenant Applications * Enterprise Applications * Workflow Automation Systems * Analytics Platforms AI Development As a Full Stack Developer, I integrate AI capabilities into products using: ✔ Claude ✔ OpenAI ✔ Gemini ✔ LangChain ✔ LangGraph ✔ RAG Pipelines ✔ AI Agents ✔ Voice AI My experience as a Full Stack Developer includes building intelligent automation systems, AI copilots, document processing applications, and conversational AI products. Architecture & Scaling Being a Full Stack Developer, I design secure and scalable architectures with: * Authentication & Authorization * Role-Based Access Control * Payment Gateways * Third-Party Integrations * Real-Time Features * WebSockets * CI/CD Pipelines * Docker * Cloud Infrastructure As a Full Stack Developer, I have modernized legacy systems, optimized performance, and improved infrastructure costs for multiple products. Development Process As a Full Stack Developer, I manage the entire lifecycle: Requirements → Architecture → Development → Testing → Deployment → Scaling I leverage modern AI-assisted tools including: ✔ Cursor ✔ Claude Code ✔ GitHub Copilot ✔ Replit ✔ Lovable ✔ Bolt Why Clients Hire Me * AI-focused Full Stack Developer with modern development workflows. * Business-minded Full Stack Developer who understands product requirements. * Dedicated Full Stack Developer focused on maintainable code. * Scalable systems Full Stack Developer with SaaS experience. * Long-term technology partner and Full Stack Developer for growing businesses. If you're looking for a Full Stack Developer to build, optimize, or scale your product, I'd be happy to discuss your project!

I am a Senior Full stack AI Developer and engineer with extensive experience delivering end-to-end web and mobile applications. I specialise in React and React Native, Flutter front-ends, backed by Node.js and .Net services, often augmented by Python/AI modules. I map business needs to technical solutions in serverless architectures on AWS (Lambda, DynamoDB, Amplify) and traditional monoliths or modern microservices. I integrate third-party APIs (including PayPal and Stripe) and deploy scalable solutions in high-pressure environments. I also handle mobile features (push notifications, BLE, offline data sync) and resolve tough issues like memory leaks. Throughout, I follow agile and test-driven development practices to exceed project goals as a team player. As a Full stack AI Developer, I leverage React (JavaScript, React Hooks, Redux) and .Net together with Node.js for robust services. On mobile, I build apps with React Native (using Redux, React Navigation, NativeBase, etc.), Flutter, and integrate payment/paywall features. On the backend I write .Net APIs and Node.js microservices, and incorporate AI/ML models with Python to add intelligent features. I’ve built numerous applications with React, React Native, Node.js, .Net and AI components. I prioritise clean RESTful and GraphQL API design and fix issues like memory leaks or performance bottlenecks promptly. I work in agile teams and thrive under pressure, always learning new tools (for example, exploring advanced TensorFlow techniques). I am a collaborative problem-solver who continuously improves and goes beyond requirements to exceed client expectations. If you need a reliable Full stack AI Developer (expert in React, Node.js, .Net, React Native, Flutter, and AI) to build, test and deliver your project, I would be excited to help.