I build AI powered web applications, AI Automations, LLM integrations and full stack products that work in production, not just in demos. Over the past 4 years, I have shipped projects for clients across the US, UK, Canada and Europe. I am 𝐓𝐨𝐩 𝐑𝐚𝐭𝐞𝐝 𝐨𝐧 𝐔𝐩𝐰𝐨𝐫𝐤 with a 100% Job Success Score, which reflects the same standard I bring to every project regardless of size. ⚙️𝐒𝐞𝐫𝐯𝐢𝐜𝐞𝐬 𝐈 𝐎𝐟𝐟𝐞𝐫⚙️: 🤖 𝐀𝐈 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭: I build real AI tools and automation systems, not just ChatGPT wrappers. AI automation workflows, multi agent systems, RAG pipelines, domain specific assistants and voice agents, all running in production using the latest LLM APIs. Some of the projects I have worked on include a voice AI fitness coaching application that accepts voice input via Web Speech API, generates personalised coaching responses using Claude and plays them back in natural speech via ElevenLabs with a Claude Vision layer that analyses food images and returns calorie counts in real time, an automated AI blog platform that scrapes fashion trend data and generates SEO optimised articles published automatically with no manual steps in between, a domain specific AI assistant grounded to business content that handles customer queries 24/7, an AI voice agent that answers inbound calls, qualifies each lead by asking about budget, timeline and intent automatically using Vapi, and an automated LinkedIn posting system that generates on brand posts with AI and publishes them on a set schedule with no manual effort. 🛠️ My Tech Stack For AI Development: Core Languages: Python, JavaScript (Node.js) LLMs: OpenAI, Anthropic Claude, Google Gemini, IBM WatsonX Voice AI: Vapi, ElevenLabs Automation & Integrations: Make, Manychat, n8n, Zapier Frameworks: LangChain, LangGraph, FastAPI Vision AI: GPT-4o Vision, Claude Vision Image Generation: Stability AI, DALL-E Vector and RAG: pgvector, Supabase Vector, RAG Pipelines Web Scraping: Playwright, Cheerio Other: Prompt Engineering, Structured Outputs, Agent Orchestration, Multi-Agent Systems 🖥️ 𝐅𝐮𝐥𝐥 𝐒𝐭𝐚𝐜𝐤 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭: I build complete web applications from concept to deployment, frontend and backend, so you are not juggling multiple developers for one product. Some of the products I have built include a multi tenant therapy SaaS with role based dashboards and Stripe subscriptions, a crypto investment platform with admin controls and dynamic content management, a community events platform, client dashboards and internal tools for businesses across multiple industries. 🛠️ My Tech Stack For Full Stack Development: Frontend: React, Next.js, Vite, TypeScript, Three.js, Tailwind CSS, Bootstrap, jQuery Backend: Node.js, Express.js, NestJS, Python, FastAPI, REST APIs, GraphQL, WebSockets Databases: MongoDB, PostgreSQL, Firebase BaaS: Supabase Authentication: JWT, OAuth, Supabase Auth, Firebase Auth Deployment: Vercel, Render, AWS, Oracle Cloud, DigitalOcean 🌟𝐖𝐡𝐲 𝐜𝐥𝐢𝐞𝐧𝐭𝐬 𝐤𝐞𝐞𝐩 𝐜𝐨𝐦𝐢𝐧𝐠 𝐛𝐚𝐜𝐤🌟 Every project gets the same level of attention regardless of size. You will always know where things stand, no chasing, no radio silence. And if something is not working I will tell you before you have to ask. Ready to build something? Send me a message.

I am a Full Stack Engineer specializing in high-performance backend systems, Gen AI powered applications, and scalable web platforms. With strong expertise in Rust systems programming, modern web development, and AI integrations, I help startups and businesses build secure, intelligent, and production-ready applications. Backend & Systems Engineering - Rust (Actix / Axum / Tokio) - High-performance REST APIs - Microservices architecture - Secure authentication systems - Database optimization (PostgreSQL / MongoDB) - Dockerized deployments AI Integration & Intelligent Applications - OpenAI API integration - Custom AI chatbots - LLM-powered SaaS platforms - AI automation workflows - Prompt engineering - AI-driven dashboards Full Stack Development - React.js - Next.js - TypeScript - Node.js - API integrations - Responsive UI systems Why Work With Me? ✔ Performance-focused architecture ✔ Clean & maintainable code ✔ Startup-friendly mindset ✔ Clear communication ✔ Production-ready solutions If you're looking for an engineer who can combine system-level performance, AI capabilities, and modern stack technologies let's build something exceptional.

Hello, With over 10 years of hands-on experience in mobile app development, n8n, AI Automations, full-stack development, and cutting-edge technologies like AI, Machine Learning (ML), and Blockchain, I specialize in delivering custom mobile apps, crypto solutions, and AI-driven applications. 🔹 What I bring to the table: - 50+ Successful Projects Completed 🌟 - 30+ Thrilled Clients Worldwide 🌍 - 100,000+ Downloads & Users 📲 - Award-Winning Innovator in App Design 🏆 - Certified Advanced Mobile & Web Developer 🎓 💡 My expertise includes: - AI Mobile Apps (iOS/Android) 🤖 - Blockchain Development (Ethereum, Solana, etc.) 🪙 - Smart Contracts Development (Solidity, Ethereum) 📝 - Crypto Wallets & DApps Development 💼 - Custom Mobile App Development (Cross-platform, React Native) 📱 - Full-Stack Web Development (React, Node.js, Python, etc.) 💻 - Cloud Integration (AWS, Firebase, Google Cloud) ☁️ - UI/UX Design & Optimization 🎨 - DeFi & NFT Solutions 💎 - API Integration & Third-Party Services 🔗 🔧 Technologies I work with: - React Native, Swift, Kotlin, Java, Objective-C - Node.js, React.js, Next.js, Angular, Vue.js - Blockchain Frameworks: Solidity, Web3.js, Truffle - AI Tools & Libraries: TensorFlow, OpenAI, Keras - Crypto Platforms: Ethereum, Binance Smart Chain, Polkadot Let me help you to build a web and mobile application for you. Just tap "HIRE ME" or "SEND AN INVITE" and let's connect. Thanks & Regards, Himanshu.

Dear my Precious Client, My name is Nhan Nguyen. I'm a Senior Developer from Soin Media, a premier software outsourcing company dedicated to connecting global enterprises with elite engineering talent. My Job Success Score is 100%. And I'm one of Top Rated Plus freelancers on Upwork. I started my freelancing career in 2009. I've been working on Upwork since 2010. With 128 completed jobs, 2681 paid hours, and more than 18 year experience, I will deliver your website, web application, and mobile application smoothly and satisfactorily. You will be satisfied with the final products, and we will have a comfortable journey together from the beginning to the ending of the project. You can check my working history for previous feedback from my clients. Collaborative, committed to quality, clear communicator, reliable, accountable for outcomes, solution oriented, professional, detail oriented are what clients reviewed me. NodeJS, React, React Native, C#, Kotlin, Swift, Solidity, Rust, AI are my main tools to build your website, web application, and mobile application. We can start our working partnership at 1 of these 3 points: 1. A description of what you want me build for you. I will compose a proposal and a development plan based on your project description. 2. A UI design (in Figma, Canva, Photoshop,...) which has several screens of your website, web application, or mobile application. I will design the other screens for you. 3. An existing website, web application, or mobile application which was abandoned by your previous developer(s). I will pick up what we have and continue the development until we launch your product(s) to the market. Feel free to ask me any question. Even you won't hire me, I'm still happy to advise you and help you to get your project warm-up. Best regards, Nhan Nguyen.

I am a Full-Stack Blockchain Developer specializing in Web3, NFT marketplaces, smart contract development, and decentralized applications. I build secure, scalable, and innovative blockchain solutions across Ethereum, Solana, and major DeFi protocols, turning ideas into real-world products. I focus on delivering transparent, efficient, and user-friendly blockchain systems that drive adoption and business growth. Services I Offer: ✔ ERC20, ERC777, ERC223, ERC721, ERC1155 Smart Contract Development ✔ Stable, Utility, Security, Investment Tokens ✔ ICO, STO, Blockchain Copyrighting, Whitepapers ✔ Decentralized Exchange & AMM Protocols ✔ Yield Farming & Liquidity Mining Protocols ✔ P2P/Pool Lending and Borrowing Platforms ✔ Governance Tokens & Impermanent Loss Mechanisms ✔ Portfolio Tracking Platforms ✔ Crypto Betting & Casino Platforms ✔ Crypto Collectible Platforms & NFTs ✔ Custom Decentralized Applications (DApps) Front-End Expertise: ✔ JavaScript | TypeScript | React.js | Next.js | AngularJS ✔ Redux | SSR | RXJS | PWA | React Query ✔ HTML5 | CSS3 | Bootstrap | Ant Design | Tailwind CSS | Sass | Less | Chakra UI ✔ React Strap | React Bootstrap | MUI Back-End Expertise: ✔ Node.js | Nest.js | Express.js Databases: ✔ MongoDB | MySQL | PostgreSQL Cloud & Web3 Tools: ✔ Web3 Integrations | AWS Lambda | AWS CloudFront (S3, EC2, Route 53) ✔ Version Control: Git | GitHub | GitLab ⭐ Tech Stack & Tools - Smart Contracts: Solidity, Hardhat, Remix IDE, ERC20, ERC223, ERC777, ERC721, ERC1155 - Blockchain Platforms & DeFi: Ethereum, Solana; Pumpfun, PumpSwap, Raydium, Jupiter Aggregator, Uniswap, PancakeSwap, Meteora, Moonit, Bonk Fun, SunPump, SunSwap, PulseSwap - Front-End & Back-End Development: React, Next.js, Node.js, TypeScript, Tailwind CSS, AngularJS, Redux, SSR, RXJS, PWA, React Query, HTML5, CSS3, Bootstrap, Sass, Less, Ant Design, Chakra UI, MUI, React Bootstrap, React Strap - APIs & Integrations: REST APIs, Web3 integrations - Databases: MongoDB, MySQL, PostgreSQL - Cloud & DevOps: Web3 tools, AWS (Lambda, S3, EC2, CloudFront, Route 53), Git, GitHub, GitLab - Development Tools: VS Code, Solana Playground Why Work With Me? - Full-Stack Web3 Delivery: End-to-end solutions from smart contract logic to pixel-perfect UI. - Proven Execution: 15+ blockchain projects delivered, including NFT drops, DeFi platforms, and crypto utilities. - Secure & Optimized: Gas-efficient, fully tested smart contracts ready for deployment. Whether you’re launching an NFT collection, DeFi platform, or cross-chain crypto utility, I bring hands-on expertise to take your project from concept to launch. Send me an invite and let’s turn your Web3 vision into reality.

Blockchain Development 🚀, DeFi Systems 💸, AI Agents & Autonomous Systems 🧠, Tokens & NFTs 🎨, Scalability & Performance ⚡ Hello, I’m Haider, a seasoned developer with 9+ years of experience and over 350 successful projects. I specialize in blockchain and AI development, delivering solutions for startups and established businesses looking to innovate in Solana, DeFi, Smart Contract, Web3, and more. My expertise spans the full lifecycle of product development, from architecture and coding to deployment and scaling. Clients benefit from my deep technical knowledge and commitment to creating secure, scalable, and efficient systems that deliver measurable value. Blockchain Development 🚀 Smart Contracts (Solidity): Secure, gas-optimized contracts with audit readiness Ethereum & EVM Chains: Comprehensive development on EVM-compatible networks dApp Development: Seamless full-stack decentralized application development Web3 Integration: Wallet connectivity and comprehensive on-chain data handling Custom Protocol Design: Tailored blockchain architectures for specific needs DeFi Systems 💸 * Protocols for lending & borrowing, staking, yield farming * Development of DEXs, AMMs, and sophisticated tokenomics AI Agents & Autonomous Systems 🧠 * Design and deployment of AI Agents * On-chain AI integration and LLM usage * Creation of multi-agent systems and automation pipelines Tokens & NFTs 🎨 * ERC-20, ERC-721, ERC-1155 token development * NFT platforms with utility-driven ecosystems Scalability & Performance ⚡ * Implementation of Layer 2 solutions * Strategies for gas optimization and high-throughput architecture Let’s discuss how we can turn your complex ideas into reality. Contact me to start building your next successful project.

A seasoned full-stack developer and AI architect with 10+ years of experience specializing in AI-powered automation, WhatsApp/Telegram chatbots, and Blockchain development. AI Agents & Automation: -Built end-to-end AI chatbot systems using OpenAI GPT, n8n, and Make. -WhatsApp Business API integrations (Twilio, WABA) for automated notifications, command parsing, and CRM workflows. -Telegram bot development for task management, reminders, and team coordination. -Experience deploying open-source AI agent frameworks (OpenClaw, AutoGPT, CrewAI). Blockchain & Web3: -Smart contract development (Solidity, Rust) — ERC-20, ERC-721, NFT marketplaces. -DApp development, token launches, and DeFi protocol integration. -Solana, Ethereum, and cross-chain solutions. What sets me apart: -100% Job Success Score | Top Rated | $200K+ earned on Upwork. -I don't just build — I architect systems that scale and are easy for your team to maintain. -Fast communication, clean code, on-time delivery

Ex-Morgan Stanley VP and Ex-Apple Engineer | Enterprise Architect & Fractional CTO Are you looking for a battle-tested technical leader who can bridge the gap between complex business vision and world-class execution? With over a decade of experience designing and developing enterprise-grade systems for tech giants and Fortune 500 financial institutions (including Apple, Citi, and Morgan Stanley), I help companies build scalable, secure, and future-proof software. Whether you need a hands-on Principal Developer to write high-throughput Java/Python code, an Architect to design a resilient system, or a Fractional CTO to build and lead your engineering team—I deliver. HOW I CAN HELP YOUR BUSINESS: • Technical Architecture & Design: Designing high-availability, low-latency enterprise web applications from scratch or optimizing existing infrastructure. • AI & Next-Gen Tech: Building autonomous AI agents, LLM integrations, and intelligent automation workflows. • Blockchain & Web3: Engineering secure smart contracts and decentralized architectures for finance and e-commerce. • Fractional CTO & Team Leadership: Scaling engineering teams, establishing agile processes, and aligning tech roadmaps with business KPIs. • Product & Project Management (PM): Translating business requirements into technical specs, managing sprints, and ensuring on-time delivery. CORE TECH STACK & EXPERTISE: • Languages: Java (Expert/Multi-year hands-on), Python, Solidity • Ecosystems: Enterprise Web Apps, Distributed Systems, Microservices, Cloud Architecture • Domains: FinTech (Banking/Trading), E-Commerce, AI/ML, Blockchain WHY CLIENTS CHOOSE ME: 1. Elite Pedigree: Having served as a Vice President at Morgan Stanley and engineered systems at Apple, I bring the highest standards of code quality and security. 2. Dual-Threat capability: I can design the architecture at 30,000 feet, write the core production code, and manage the team delivering it. 3. Business-First Mindset: I don't just build tech for the sake of tech. I build systems that reduce operational costs, increase revenue, and scale seamlessly.

AI Automation Specialist | AI Agents | n8n & Zapier | AI Chatbots | AI Receptionist I help businesses automate operations, reduce manual work, and scale efficiently using AI automation, intelligent AI agents, and advanced workflows built with n8n and Zapier. My solutions run 24/7 and are designed to deliver real business results. What I Do • AI automation for business processes • AI agents for task execution and decision workflows • n8n automation (complex logic & custom integrations) • Zapier automation and system integrations • AI chatbots for sales, support, and lead qualification • AI receptionist for customer handling and appointment booking I connect CRMs, Google Sheets, Airtable, email systems, APIs, and AI models into fully automated workflows that are reliable and scalable. AI Automation Solutions • AI agents to handle customer interactions and workflows • AI chatbots for websites, WhatsApp, and internal systems • AI receptionist to manage inquiries, bookings, and follow-ups • n8n workflows for advanced automation logic • Zapier automations for fast, stable integrations • AI-powered data processing and reporting All automations are custom-built, secure, and optimized for long-term use. Why Clients Work With Me 🚀 • Business-focused automation (not just technical setup) • Clean and scalable automation architecture • Clear communication and fast delivery • Long-term support and optimization • No templates — every solution is tailored I focus on automation that saves time, reduces cost, and increases efficiency. Tools & Expertise 🤖 • AI Automation • AI Agents • n8n • Zapier • AI Chatbots • AI Receptionist • OpenAI / GPT • APIs & Webhooks • CRM Automation Ideal For Startups, agencies, SaaS companies, real estate, healthcare, e-commerce, and service-based businesses looking to implement reliable AI automation. Message me to discuss your automation goals and get a clear implementation plan.

Blockchain Developer & Smart Contract Engineer | 7+ years building Web3 platforms. Founder of Luxen Labs. 40+ production-ready projects including DeFi protocols, NFT marketplaces, token launchpads, and AI-integrated dApps that processed millions in transactions. I help Web3 startups and enterprises launch secure, scalable blockchain solutions,from smart contracts to complete dApps. Whether you're building a DeFi protocol, NFT marketplace, or token launchpad, I deliver audit-ready code that ships on time and performs under real-world conditions. Recent Results: - Fairlaunch Solana Launchpad: Delivered seamless token presales and staking system with $500K+ in early transactions - Paal AI Integration: Built blockchain-powered AI features that processed 10M+ on-chain interactions - Gambit Markets: Launched sports betting platform handling 50K+ predictions with zero downtime - Delivered scalable solutions for Adrise AI, MicroGPT, and 35+ other Web3 projects What I Deliver Smart Contract Development ✅ Solidity (Ethereum, Polygon, BSC, Arbitrum, Optimism) – ERC-20/721/1155, DeFi protocols, gas optimization ✅ Rust (Solana, Anchor) – SPL tokens, high-performance dApps, Solana program development ✅ Move (Aptos, Sui) – Next-gen blockchain development for emerging L1s Security-first development with audit readiness built in from day one DeFi & Tokenomics ✅ Staking platforms, liquidity pools, yield farming protocols ✅ Token launches with custom vesting, distribution, and governance ✅ DEX integrations, AMM protocols, cross-chain bridges Economic modeling and tokenomics consulting NFT & Digital Assets ✅ Full-featured NFT marketplaces with royalties, metadata, and trading ✅ Minting engines, launchpads, and reveal mechanics ✅ GameFi integrations, NFT staking, dynamic NFTs ✅ ERC-721, ERC-1155, and Solana NFT standards Frontend & Web3 Integration ✅ Modern, responsive Web3 UIs: React, Next.js, TypeScript, Tailwind CSS ✅ Wallet integrations: MetaMask, Phantom, WalletConnect, Coinbase Wallet ✅ Smart wallet implementation (ERC-4337), embedded wallets for seamless onboarding ✅ Real-time blockchain data visualization and dApp dashboards Backend & Infrastructure ✅ Scalable API development: Node.js, Go, Python ✅ Database architecture: PostgreSQL, MongoDB, Redis, Firebase ✅ Cloud deployment: AWS, Vercel, Railway with CI/CD pipelines ✅ Blockchain infrastructure: RPC nodes, indexers, event listeners Payment & On-Ramps ✅ Fiat-to-crypto integrations: Stripe, MoonPay, Transak, Banxa ✅ Multi-payment solutions for Web3 products ✅ Subscription models and recurring crypto payments AI + Web3 ✅ Trading bots with automated strategies across DEXs ✅ AI-powered market analysis and prediction models ✅ Smart automation for blockchain workflows Why Clients Choose Me ✅ Audit-Ready Development – Every line of code is written with security as priority #1. I follow industry best practices, implement comprehensive testing, and design contracts that pass professional audits. ✅ End-to-End Execution – From product architecture to mainnet deployment, I handle the full development lifecycle. You get a partner who understands both the technical and business sides of Web3. ✅ 40+ Successful Launches – I've shipped production applications that handle real transactions, real users, and real capital. My code has processed millions in on-chain value. ✅ Partnership Mindset – Your success is my success. I treat every project with the care and attention it deserves, offering strategic guidance beyond just coding. ✅ Communication & Transparency – Clear updates, honest timelines, and proactive problem-solving. I keep you informed every step of the way. Tech Stack - Smart Contracts: Solidity, Rust, Move, Hardhat, Foundry, Anchor, OpenZeppelin - Frontend: React, Next.js, TypeScript, JavaScript, Tailwind CSS, Material-UI - Backend: Node.js, Python, Go, Express.js, REST APIs, GraphQL - Web3 Libraries: Ethers.js, Web3.js, viem, @solana/web3.js, WalletConnect SDK - Blockchain Platforms: Ethereum, BSC, Solana, Arbitrum, Optimism, Aptos, Sui - Databases: PostgreSQL, MongoDB, Redis, Firebase, Supabase - DevOps & Tools: AWS, Docker, Git/GitHub, CI/CD pipelines, Vercel, Railway - Testing & Security: Hardhat test suites, Foundry fuzzing, Slither, MythX, Aderyn Services I Don't Offer To maintain quality and focus, I don't work on: - Copy/paste template contracts without customization - Projects without clear scope or budget - Illegal or unethical blockchain schemes Let's Build Your Web3 Vision Whether you're launching a DeFi protocol, building an NFT marketplace, creating a token launchpad, or need a trusted blockchain architect for your startup, I'm here to help you ship secure, scalable products that perform. Ready to start? 📩 Click "Invite" or send me a message. - Blockchain Development, Web3 Developer, Smart Contract Developer, Solidity Developer, Rust Developer, Move Developer, Ethereum Developer, Solana Developer, DeFi Developer, NFT Development, Smart Contract