Top Rated Plus Full-Stack & AI Engineer with $2M+ earned, 100% Job Success, and 25,000+ hours delivered on Upwork. I build React, Node.js, Next.js, Python, and AI/RAG-powered web and mobile apps. Over the past 15+ years, I've built web and mobile applications for major brands including National Post, Toronto Sun, Vancouver Sun, NHL, MLB, WWE, Nespresso, and Toronto Green P Parking — as well as hundreds of startups, agencies, and nonprofits across Canada and beyond. 🔨 What I Build ⚡ Custom Web apps, AI Agents, and SaaS platforms — React.js, Node.js, Express.js, Typescript, Python 🛒 E-commerce stores — Wordpress, Shopify, WooCommerce, Webflow 📱 Cross-platform mobile apps — Flutter & React Native 🤖 AI-powered tools & integrations — OpenAI, Claude, Gemini 🎨 Landing pages & UI/UX design — Figma, Adobe XD 🧰 Tech Stack React.js · Node.js , Express.js · Python · Django · React Native · WordPress · Shopify · Webflow · TypeScript · Vue.js · MySQL · MongoDB · Elasticsearch · REST APIs · GraphQL · AWS · Linux 🏆 Why Clients Choose Me ✅ Top Rated Plus — recognized for excellence on large contracts 🏅 Awarded 2025 & 2026 on Clutch, GoodFirms, DesignRush & TechReviewer 🇨🇦 Based in Milton, Canada (EST) with a 150+ developer team across time zones 📄 Happy to sign NDAs and contracts within Canada ⏱️ Fast communicator — I typically respond within an hour I treat every project as a long-term partnership, not just a transaction. Whether you need a quick fix or a full product build, I'll make sure it's done right. Let's talk about your project — book a free discovery call or send me a message today.

I’m Aman, a Full-Stack Developer with 7+ years of experience building high-performance, scalable, and secure digital solutions. My expertise spans AI-powered platforms, Web3 DApps, Learning Management Systems (LMS), digital wallets, and lead generation systems. I specialize in crafting end-to-end applications using React.js, Node.js, MongoDB, and cloud-native architectures, ensuring modern, reliable, and future-proof systems. Key highlights of my work: AI Platforms: Built data-driven solutions integrating AI/ML models into web applications for automation and insights. Web3 & Blockchain: Delivered smart contracts, token systems, and blockchain integrations with secure wallet solutions. Microservices & Cloud: Designed distributed, cloud-native systems for performance, scalability, and easy maintenance. LMS & Custom Platforms: Developed interactive learning management systems and business platforms for user engagement and growth. Leadership & Team Management: Currently leading a team, mentoring engineers, and driving projects from concept to deployment. My focus is on delivering clean, well-documented code, robust architectures, and solutions that align with your business goals. If you’re looking for a reliable developer who can own the full development cycle while keeping quality, security, and timelines at the forefront — let’s connect.

Co-Founder & CEO of IT-Dimension, IT engineer, and project coordinator with deep hands-on expertise. Since 2007, I’ve led the delivery of 600+ custom software products and acted as a technical partner in 10+ SaaS ventures, taking them from idea to scalable success. In IT-Dimension we create software of any complexity to boost business in a wide range of industries: Industry 4.0 & Internet of Things (including Robotics + hardware development), Logistics/Transportation, Media & Entertainment, Healthcare/Wellness, Social Apps, AI Business Automation, GameDev, AR/VR, and far beyond. We offer deep and wide expertise in the following areas: 📌Strategic AI Adoption & Implementation Consulting 📌Web Backend: Node.js, NextJS, Express, Python, C++, .NET Core, ASP.NET Core, PHP, Go, Java, Kotlin 📌Web Frontend: Angular, React, Vue, Blazor 📌Mobile Development: Xamarin, Swift, Objective-C, C++, Kotlin, Java, Flutter, React Native, 📌Desktop Development: C#/.NET, WPF/Xamarin, C++, wxWidgets, Qt 📌UI/UX: User Interface Research, User Scenarios, User Interface Design, Usability Testing, Wireframing, Prototyping, UX Research, UX Writing, App design, web design, Visual Communication, UI/UX audit, custom graphics, brand identity 📌AR/VR: Unity, AR Foundation, AR Kit, AR Core, Kinect, Computer Vision, ML/AI 📌3D Modeling, Animation, Video Montage: Blender, Metahuman, Cinema 4D, Speedtree, DaVinci Resolve, Marmoset 📌Industrial Blockchain Sulutions: Web3.js, Solidity, C++, Go, Rust 📌Hardware Prototyping and Embedded: C, C++, Python 📌Cloud Platforms: AWS, Google Cloud, Azure, Heroku, Docker, DigitalOcean, Kubernetes, Terraform Partnering with IT-Dimension gets you: ❇️ In-depth Technology Consultation ❇️ Professional UI/UX Design ❇️ AI-first approach and AI integrations ❇️ Dedicated Software Development ❇️ Project Management ❇️ Quality Assurance ❇️ Deployment and DevOps Services ❇️ Software Maintenance and Enhancement Why choose IT-Dimension? 🔷 Dedicated multinational onshore/offshore teams (US, Europe located, different time zones) 🔷 16+ years of technological expertise 🔷 Swift and efficient project initiation 🔷 Deep-rooted expertise in 20+ domains 🔷 Personalized project handling 🔷 Innovative thinking for maximizing results

I build production-grade AI agents, RAG systems, and automated workflows that actually work in the real world. With 8+ years of full-stack engineering (Python, Node.js, PHP) and deep expertise in modern LLM stacks, I turn complex business problems into scalable, secure AI solutions that save hundreds of hours and cut operational costs. 🔹 What I Build (Core Expertise) • Autonomous AI Agents & Orchestration: Building multi-agent systems (OpenClaw, Hermes, LangGraph, CrewAI) that research, plan, and execute complex workflows with strict guardrails, tool-use, and human-in-the-loop approval. • Production RAG & Knowledge Systems: Designing hybrid retrieval pipelines (Pinecone, Qdrant, pgvector, LlamaIndex) that ground LLMs in your data, eliminating hallucinations and providing cited, accurate answers. • End-to-End Workflow Automation: Wiring AI into your existing stack (n8n, Make, Zapier, GoHighLevel, Twilio) to automate lead generation, content creation, customer support, and document processing. • Custom Model Training & Edge AI: Fine-tuning open-source models (Llama 3, Qwen, Mistral, Gemma) using LoRA/QLoRA/Unsloth, and deploying quantized models (GGUF, AWQ, ONNX) for fast, private, on-device inference. • Full-Stack AI Delivery: Wrapping AI capabilities in robust, scalable APIs and interfaces (FastAPI, Django, Next.js, Laravel, React) with proper observability, rate limiting, and error handling. 🔹 Real-World Impact (Recent Projects) ✅ Enterprise RAG Knowledge Agent: Built a retrieval-augmented assistant for internal documentation using LangChain and Qdrant. Reduced support tickets by 60% and cut employee research time in half. ✅ Healthcare AI Vision & Triage: Architected a HIPAA-compliant X-ray fracture detection system and a multi-agent patient triage bot. Dropped clinical response times from hours to minutes. ✅ AI Voice & Call Automation: Deployed Twilio + LLM agents for inbound/outbound calls, automating appointment scheduling and lead qualification with natural, human-like conversations. ✅ Automated Content & Outreach Engine: Built a multi-agent pipeline (n8n + OpenClaw) that researches prospects, drafts on-brand content, and routes to approval. Cut manual production time by 70%. ✅ Credit Repair & Compliance Automation: Full workflow automation (Zapier/Make) + AI agents for document processing, client onboarding, and compliance tracking, eliminating manual data entry. 🔹 Why Clients Work With Me • Production-First Mindset: I don't build fragile demos. I build systems with retry logic, dead-letter queues, strict JSON validation, and observability (Langfuse) so they survive real-world use. • Business-Aligned: I focus on ROI. Every pipeline is designed to save time, reduce costs, or generate revenue. No over-engineering, just practical solutions. • Full-Cycle Delivery: From discovery and architecture → prototyping → deployment → clean handoff. I document everything so your team can own the system. • Clear Communication: US-timezone overlap, weekly updates, plain English explanations, and no unnecessary jargon. Let's build AI that actually works. Message me to discuss your project and how we can automate your biggest bottlenecks. ☕️✨

Most businesses don’t need another AI demo. They need AI systems that save time, reduce manual work, and run reliably in production. That’s what I build. I’m Hassan Mehmood, an AI Engineer with 10+ years of software engineering experience, specializing in AI voice agents, RAG chatbots, LLM-powered applications, n8n automations, and production-ready AI systems. I help businesses turn manual workflows, scattered knowledge, repetitive support tasks, and disconnected tools into intelligent AI systems that are practical, scalable, and easy to maintain. What I Can Build for You AI Voice Agents Voice agents for appointment booking, customer support, lead qualification, follow-ups, reminders, call handling, and CRM updates. RAG Chatbots & Knowledge Systems AI assistants that answer from your documents, PDFs, websites, SOPs, internal knowledge base, product data, or customer support content. n8n / Make / Zapier Automations Workflow automations that connect CRMs, email, Google Sheets, Slack, APIs, webhooks, databases, and AI models. LLM-Powered Applications Custom AI tools using OpenAI, Claude, Gemini, prompt engineering, structured outputs, function calling, tool use, and multi-step workflows. Python AI Backends Scalable backend systems using Python, FastAPI, Flask, Django, PostgreSQL, MongoDB, Redis, AWS, Docker, and API integrations. Recent Work Emotion-Aware AI Wellness Platform — 8M+ Users Worked on AI-powered wellness and emotion-aware chatbot experiences built for real users at scale. Creator AI Platform Built AI workflows and intelligent product features for creator-focused AI applications. Prototype-to-Production Product Engineering Helped take a product from prototype/Replit stage to a live production system with long-term engineering, automation, backend, and deployment support. Skills & Tech Stack AI & LLMs: OpenAI, GPT-4o, Claude, Gemini, prompt engineering, structured outputs, function calling RAG & Vector Search: LangChain, LlamaIndex, Pinecone, Qdrant, Weaviate, Chroma, FAISS, semantic search Voice AI: AI voice agents, speech-to-text, text-to-speech, call automation, appointment booking agents Automation: n8n, Zapier, Make, webhooks, APIs, CRM automation, workflow orchestration Backend: Python, FastAPI, Flask, Django, Node.js, REST APIs Databases: PostgreSQL, MongoDB, MySQL, Redis Cloud & DevOps: AWS, Docker, CI/CD, cloud deployment I’m a Good Fit If You Need An AI assistant connected to your real business data A RAG chatbot for documents, support, SaaS data, or internal knowledge An AI voice agent for calls, booking, support, or lead qualification n8n automations that reduce manual work and connect your tools A production AI backend, not just a quick prototype Someone who understands both AI and full-stack product engineering Why Work With Me I don’t just connect an AI API and call it done. I think through the full system: user flow, data structure, prompts, retrieval quality, backend architecture, integrations, error handling, deployment, and long-term maintainability. My goal is simple: build AI systems that are useful, reliable, and connected to how your business actually works. If you want to build an AI solution that can move from idea to real production usage, let’s talk.

✅ Top Rated Web3 Developer 🙋‍♂️ Greetings! My name is Sergey and I am a professional Solidity developer with over 5 years of experience. I possess deep knowledge in blockchain technologies, particularly in Ethereum and Smart Contracts. 📚 Over the past 5 years, I've been actively involved in various blockchain projects including DeFi, NFT, DAO, and DApps, employing technologies such as Solidity, Truffle, Hardhat, and Web3.js. My experience includes developing secure and optimized smart contracts, conducting code audits, writing tests, and developing user interfaces for interacting with smart contracts. 🔬 My specialization: 👨‍💻 Solidity smart contract development 🕵️‍♂️ Smart contract audit and optimization 🌐 DApp development using Web3.js/ethers.js 🧪 Testing using Ganache, Mocha, and Truffle 🛠 Working with open frameworks like OpenZeppelin and Hardhat 💰 Developing and integrating ERC20, ERC721, ERC1155, and ERC1400 tokens 📈 DeFi protocols and yield farming strategies 🎨 NFT platforms and marketplace development 👥 DAO creation and governance mechanisms 🚀 Layer-2 solutions integration (like Optimism, zkSync, Arbitrum) 🔗 Interoperability solutions (like Polkadot, Cosmos) 🔮 On-chain and off-chain data interaction with Oracles 🔄 Upgradable smart contracts design 📊 Developing decentralized exchanges (DEX) 💼 Integrating crypto wallets and creating secure wallet libraries ⛽ Gas optimization for transactions and smart contracts 📉 Blockchain data analytics and querying with TheGraph 💼 In my work, I strive to deliver reliable and secure products while always adhering to project deadlines. I place great emphasis on clean, structured, and readable code that adheres to best development practices and ensures high system performance and reliability. 🤝 If you need a Solidity developer capable of creating a secure and efficient smart contract or blockchain application, I would be glad to discuss your project. Let's create something amazing together! Tags: #Solidity #Blockchain #Ethereum #SmartContracts #DApps #DeFi #NFT #DAO #Web3js #Truffle #Hardhat #OpenZeppelin #ERC20 #ERC721 #ERC1155 #ERC1400 #Layer2 #Optimism #zkSync #Arbitrum #Polkadot #Cosmos #Oracles #UpgradableSmartContracts #DEX #CryptoWallets #GasOptimization #TheGraph

I put resources into innovation to enable our clients to release new potential over their associations. Incepted in 2009, from there to now in these considerable years, we've gone through every obstacle and provided solution with sheer dedication. What makes Moon Technolabs stand out from the crowd is their pool of experts, industry knowledge and a genuine understanding of what to do so as to succeed. - Web Development | Android/iOS Development | AI/ML Development | Windows/MacOS app - Computer Vision | VoIP/WebRTC | AI agent chatbot/Voicebot | IoT | MCP | CLI Pillars I work with: - Commitment - Quality with the standard code structure - best customer service after development - Agile Methodology

Welcome to the crossroads where expertise meets innovation! I'm a seasoned web developer, celebrated for transforming client visions into reality with bespoke solutions that exceed expectations. With a decade of triumphs under my belt, my approach is simple yet powerful: your vision leads the way, enhanced by my strategic insights to ensure we not only meet your goals but redefine them. As a top-rated Upwork professional, I'm not just about ticking boxes. My work embodies excellence, punctuality, and adherence to your budget, proven by an exceptional job success rate that speaks volumes. My forte? A broad spectrum of services tailored to your unique needs, from Web3/DApps and custom web applications to CMS systems, REST/GraphQL API development, seamless API integrations, cutting-edge serverless deployments, and meticulous server management. But it's not just about the code. It's about building a partnership that thrives on trust, innovation, and the relentless pursuit of excellence. Every project is a testament to quality, rigorously tested to ensure flawless performance that stands the test of time. Looking for a developer who not only understands your needs but is also committed to turning your digital aspirations into success stories? Let's connect. I'm here to bring your ideas to life, one line of code at a time.

AI agents, RAG, and automation built into production web and SaaS apps, full-stack, not demos. Recent builds scaled an energy platform to 1.2M+ users and an AI document system across 550+ sites. I'm a senior full-stack and AI engineer (React/Next.js + Python/FastAPI) who makes AI actually connect to your data, your UI, and your users. What I deliver: - AI agents and automation that plan, call tools, and finish multi-step jobs (LangChain, LangGraph, MCP, OpenAI, and Claude APIs), with evaluation and observability built in. - RAG and document intelligence over your data (vector DBs, embeddings), grounded so it answers from your sources, not invented facts. - Voice and conversational AI in production (Retell, Vapi, ElevenLabs). - The full-stack around it: multi-tenant SaaS, FastAPI, Stripe, secure cloud on AWS, Azure, GCP. Proven in production: - Alta (PropTech): AI reads building documents to auto-extract energy data and answer questions across 25+ organizations, 550+ sites, 1.6M+ m2. - OhmConnect (GreenTech): 4.5-year build scaling a consumer energy platform to 1.2M+ signups, $1.8M+ rewards, 370K+ connected devices. - Hero Trainer (HealthTech): cross-platform fitness app with live HealthKit and Google Fit sync on a Django backend. I work as your AI solutions architect with a vetted CodeFulcrum team (Top Rated Plus) behind me, so the right AI gets designed and shipped, not just advised on. Stack: Python, Django, FastAPI, LangChain, LangGraph, MCP, RAG, Vector DBs, OpenAI, Claude, React, Next.js, Node.js, PostgreSQL, AWS. Send your use case, and I'll reply with a short architecture sketch and a realistic scope, no charge.

I specialize in: - Integrating AI/LLMs into high-performance C++ systems - Building real-time audio/video processing (WebRTC, streaming) - Optimizing blockchain and cryptocurrency applications - Developing embedded solutions for ARM/IoT