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Full stack developer with 7+ years of experience building web apps, SaaS products, and AI-powered platforms. I mostly work with Next.js on the frontend and Nodejs/NestJS or FastAPI on the backend, plus Python for the AI side (RAG, LangChain, LangGraph, agents, voice, OCR). 30+ apps shipped to production so far. A few I'm proud of: Agentic RAG Platform (FastAPI + LangGraph) Multi-tenant RAG API with a 13-node workflow: query rewriting, hybrid dense and BM25 retrieval, RRF fusion, and cross-encoder reranking with relevance-gated self correction. JWT auth with org and department scoped access, Redis-backed tiered rate limiting, MongoDB (async Motor), ChromaDB for vectors, PyMuPDF and Tesseract for PDF and image OCR. Runs in Docker. Discord RAG Bot A bot that answers ask queries using ChromaDB semantic search over channel messages, PDFs, images (OCR), and Office docs. Connected it to a self-hosted Qwen3-4B vLLM server through a secure tunnel, so no OpenAI dependency and no per-token cost. Discord-styled browser UI built with Flask. Live Transcription App (US political media) Real-time transcription of any YouTube live stream. Whisper Mini backend with 0.2 to 0.8ms chunk processing. I fixed the boundary word dropout issue with an overlapping chunk strategy. Already validated for production quality accuracy. Blitz Trading (solo build) Trading journal with Charles Schwab OAuth 2.0, AES-256 encrypted token storage, 30 minute auto-sync, and a trade normalization pipeline for stocks and multi-leg options. Domain-separated NestJS backend with JWT REST APIs and WebSocket gateways for live P and L and equity curves. Integrated TrendSpider, Tiingo, and SignalStack for scanner feeds and webhook signals. GreenAI Blockchain Traceability Blockchain farm-to-fork platform built on NestJS microservices (Auth, Activities, Farm Ops, QR, Audit, Notifications). Dynamic QR generation with expiry, Contabo and MinIO storage, and a Next.js admin dashboard with geospatial visualization. 99.5 percent uptime with 500 plus concurrent users. Bulk operations cut activity assignment time by 65 percent. Beach Bunny House Real estate marketplace for renting, buying, selling, and swapping properties. Advanced filters cut search time by 60 percent. Real-time listing updates, property dashboards, booking and payment integrations. What I can help you build: AI SaaS products: RAG chatbots, AI agents, document Q and A, multimodal assistants, LLM dashboards Full stack web apps: Next.js and React frontends with NestJS, Node.js, or FastAPI backends. Stripe and PayPal billing, role-based auth, admin panels, multi-tenant setups Real-time systems: WebSockets, Socket IO, Kafka, RabbitMQ, live dashboards, live transcription Fintech and trading tools: broker OAuth integrations, encrypted token storage, trade normalization, webhook signals Microservices and DevOps: Docker, Nginx, PM2, GitHub Actions CI and CD, deployment on Contabo, Vercel, AWS Tech I work with daily: Frontend: Next.js, React, TypeScript, Redux, RTK Query, Tailwind, Material UI Backend: NestJS, Node.js, Express, Python, FastAPI, gRPC, WebSockets AI and ML: LangChain, LangGraph, RAG, ChromaDB, Pinecone, OpenAI, Claude, Gemini, Whisper, vLLM, prompt engineering Databases: PostgreSQL, MongoDB, Redis, Prisma, MySQL, Firebase Infra: Docker, Nginx, PM2, GitHub Actions, Contabo, Vercel, AWS, MinIO, Kafka, RabbitMQ How I work: I write every line of code myself. No outsourcing, no middlemen. You get daily updates, working demos at every milestone, and code that is actually documented. If I think something is a bad idea or there is a better way to build it, I will tell you upfront. I do not disappear mid project. Send me a message with what you are building. I will get back to you within a few hours with a few clarifying questions and a rough plan.

I build AI-powered products end-to-end: LLM agents, RAG systems, chatbots, and workflow automation — shipped on React/Next.js, FastAPI, and AWS. Top Rated Plus, 10 completed contracts, $88k+ earned. I specialize in AI integration, agentic systems, MCP/tool integration, LLM APIs (OpenAI, Anthropic), and RAG, combining them with strong backend architecture and cloud engineering to build AI capabilities that work reliably in real-world production environments. I build modern platforms using FastAPI, React/Next.js, and AWS, with AI integrated as a first-class capability for automation, intelligent workflows, search, document processing, and complex business operations. My approach is pragmatic: clean architecture, clear data flows, production-ready AI integrations, and systems designed to scale and remain maintainable. 🚀 Have an AI idea, PoC, or MCP that needs to become a production-ready product? I can help turn it into a scalable system — from architecture and AI integration to cloud deployment and production delivery.

I build production systems where AI actually has to work — not demo it. Over 8,800+ hours on Upwork (100% JSS, Top Rated Plus), I've shipped Claude and OpenAI integrations, MCP servers connecting agents to live business data, and automation pipelines that run unattended in production — handling real users and real financial data, not sandbox traffic. ✅ AI in production — Claude & OpenAI integrated into live SaaS handling real load, plus MCP server development connecting agents to real systems ✅ Automation that doesn't silently fail — n8n & Inngest pipelines with durable execution and idempotent step writes ✅ Built for scale — Kubernetes-deployed apps maintained across 2,400+ production hours. ✅ FinTech-grade reliability — APIs and pipelines for an alternative-assets platform where correctness isn't optional ✅ End-to-end ownership — Postgres schema to Docker/Kubernetes deploy to the pager going off at 3am Core stack: TypeScript, Next.js, NestJS, PostgreSQL, Redis, Docker, Kubernetes, AWS, Claude API, LangGraph, RAG/pgvector, MCP, n8n, Inngest, Stripe/Stripe Connect, Prisma, Supabase, Shopify, Go, Kafka, Terraform. If you're integrating AI into an existing system, building an MCP server, automating a manual workflow, or scaling a SaaS product without breaking what already works — send me a message with what you're building.

I’m a Machine Learning & Backend Engineer with a strong background in AI, data analytics, and software development. I have hands-on experience building intelligent systems ranging from deep learning models with MobileNetV2 for image classification to reinforcement learning for medical diagnosis support systems. 🔹 What I can help you with: • Machine Learning & Deep Learning: Model training, evaluation, and deployment (XGBoost, Random Forest, TensorFlow, MobileNetV2, BERT). • Computer Vision & NLP: Image classification, data augmentation, OCR, and text analytics. • Backend Development: API design with FastAPI, scalable data pipelines, and cloud integration. • Data Analytics: Data preprocessing, visualization, and predictive modeling. • Healthcare & AI Research: Clinical decision support systems (AI-CDSS), medical data pipelines, and published research (IEEE Scopus Indexed). 💼 Highlights: • Built BerryCare, an AI-powered strawberry disease detection app (MobileNetV2 + FastAPI, Hybrid Edge AI & Cloud). • Currently working at GreyDx (Singapore), developing AI models and backend systems for a Clinical Decision Support System. • Authored and presented a research paper on deep learning at IEEE IAICT 2025. • Holder of 25+ professional certifications (Stanford, DeepLearning.AI, Google, Huawei, etc.). I combine strong technical skills with creativity and collaboration, ensuring every solution is both innovative and practical. If you’re looking for someone who can deliver end-to-end AI/ML solutions or backend systems, I’m here to help. 🚀 Let’s bring your ideas to life with data-driven solutions!

𝗕𝘂𝘀𝗶𝗻𝗲𝘀𝘀𝗲𝘀 𝗱𝗼𝗻'𝘁 𝗻𝗲𝗲𝗱 𝗺𝗼𝗿𝗲 𝗔𝗜 𝘁𝗼𝗼𝗹𝘀. 𝗧𝗵𝗲𝘆 𝗻𝗲𝗲𝗱 𝘀𝘆𝘀𝘁𝗲𝗺𝘀 𝘁𝗵𝗮𝘁 𝗿𝗲𝗱𝘂𝗰𝗲 𝗺𝗮𝗻𝘂𝗮𝗹 𝘄𝗼𝗿𝗸, 𝗰𝗼𝗻𝗻𝗲𝗰𝘁 𝘁𝗵𝗲𝗶𝗿 𝘄𝗼𝗿𝗸𝗳𝗹𝗼𝘄𝘀, 𝗮𝗻𝗱 𝗵𝗲𝗹𝗽 𝘁𝗲𝗮𝗺𝘀 𝗱𝗼 𝗺𝗼𝗿𝗲 𝘄𝗶𝘁𝗵𝗼𝘂𝘁 𝗵𝗶𝗿𝗶𝗻𝗴 𝗺𝗼𝗿𝗲 𝗽𝗲𝗼𝗽𝗹𝗲. I'm an AI Systems Architect and OpenClaw Specialist with 3+ years of experience building AI agents, business automation systems, RAG solutions, and full-stack AI applications that run reliably in production. 𝗪𝗵𝗮𝘁 𝗜 𝗰𝗮𝗻 𝗵𝗲𝗹𝗽 𝘄𝗶𝘁𝗵: - AI Agents and Task Automation - Business Workflow Automation - OpenClaw Setup and Custom Development - RAG and Internal Knowledge Systems - Full-Stack AI Applications - API Integrations and System Connectivity - Internal Tools and Operational Dashboards - MCP Servers and Custom Tool Integrations 𝗜𝗻𝗱𝘂𝘀𝘁𝗿𝗶𝗲𝘀 𝗜 𝘄𝗼𝗿𝗸 𝘄𝗶𝘁𝗵: - E-commerce and SaaS my main focus - Also work with agencies, logistics, real estate, and more 𝗪𝗵𝗮𝘁 𝗺𝗮𝗸𝗲𝘀 𝗺𝗲 𝗱𝗶𝗳𝗳𝗲𝗿𝗲𝗻𝘁: - I focus on solving real business problems, not adding unnecessary complexity - I take projects from planning all the way to deployment - I build things that teams can actually use every day - I hold relevant certifications in AI and cloud technologies - You can see my work in action live demos available on request 𝗥𝗲𝗰𝗲𝗻𝘁 𝘄𝗼𝗿𝗸 𝗶𝗻𝗰𝗹𝘂𝗱𝗲𝘀: - Built AI agents that helped teams handle the workload of 3-5 extra people without expanding the team - Developed OpenClaw assistants that use tools, remember context, and complete tasks across workflows - Created internal document and knowledge search systems - Built full AI applications from planning and design to live deployment - Connected AI systems with APIs, databases, and existing business software 𝗖𝗼𝗿𝗲 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀: OpenClaw • Python • FastAPI • LangChain • LangGraph • RAG • PostgreSQL • React • Next.js • Node.js • TypeScript • Docker • OpenAI • Claude • MCP 𝗟𝗲𝘁'𝘀 𝗧𝗮𝗹𝗸: If you want to automate your operations, reduce manual work, or build an AI-powered system , send me a message and let's get it built.

I’m Gaurav, a Full Stack AI/ML Engineer with 6+ years of experience building 𝐀𝐈-𝐝𝐫𝐢𝐯𝐞𝐧 𝐒𝐚𝐚𝐒 𝐩𝐥𝐚𝐭𝐟𝐨𝐫𝐦𝐬, 𝐚𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧 𝐬𝐲𝐬𝐭𝐞𝐦𝐬, 𝐚𝐧𝐝 𝐢𝐧𝐭𝐞𝐥𝐥𝐢𝐠𝐞𝐧𝐭 𝐰𝐞𝐛 𝐚𝐧𝐝 𝐦𝐨𝐛𝐢𝐥𝐞 𝐚𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬. I specialize in combining modern full-stack development with 𝐦𝐚𝐜𝐡𝐢𝐧𝐞 𝐥𝐞𝐚𝐫𝐧𝐢𝐧𝐠, 𝐜𝐨𝐦𝐩𝐮𝐭𝐞𝐫 𝐯𝐢𝐬𝐢𝐨𝐧, 𝐚𝐧𝐝 𝐀𝐈 𝐚𝐠𝐞𝐧𝐭 𝐭𝐞𝐜𝐡𝐧𝐨𝐥𝐨𝐠𝐢𝐞𝐬 to deliver fast, secure, and scalable software for startups and enterprises. ✅ Core Skills - Frontend: React, Next.js, Vue, Svelte, TypeScript, Tailwind CSS - Backend: Node.js (Express, NestJS), Python (FastAPI, Django, Flask), Go, PHP (Laravel) - Mobile: React Native (iOS & Android), Cross-Platform Apps - Databases: PostgreSQL, MongoDB, MySQL, Firebase, Supabase Cloud & DevOps: AWS, GCP, Azure, Docker, Kubernetes ✅ AI, ML & Automation Expertise - Machine Learning: Scikit-learn, TensorFlow, PyTorch - Computer Vision: OpenCV, YOLO, MediaPipe, Vision Transformers, Object Detection, OCR - AI Agents & Chatbots: LangChain, CrewAI, LangGraph, OpenAI, LLaMA - Voice Agents: Retell.AI, ElevenLabs, VAPI, Twilio - Automation: Zapier, Make.com, n8n, Airtable, Notion, Google Workspace - LLM Integration: RAG systems, CustomGPTs, Knowledgebase Agents ✅Why Clients Choose Me - End-to-End Ownership: From architecture to deployment - Agile Delivery: Clear milestones and fast communication - Secure & Reliable: Tested, maintainable, and scalable code - Client-First Approach: I adapt to your stack, goals, and team Let’s build your next AI-powered solution together! 🚀 🔑 Keywords for Upwork Search Full Stack AI/ML Engineer, Python Developer, Node.js Developer, React Developer, Next.js Developer, React Native Developer, AI Agent Developer, AI Chatbot Developer, AI Voice Agent, Machine Learning Engineer, Computer Vision Engineer, LangChain Developer, CrewAI, Retell.AI, VAPI, ElevenLabs, OpenAI Developer, TensorFlow, PyTorch, FastAPI, Django, SaaS Developer, Automation Engineer, Workflow Automation, RAG Chatbot, API Integration, AWS, GCP, Docker, Kubernetes, Stripe API, DevOps, Cloud Engineer, Web Application Developer, Mobile App Developer, FinTech, AI SaaS, Intelligent Automation