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🥇 Expert-Vetted (Top 1% on Upwork) | 14+ years shipping production web & mobile products - with AI built in where it adds value, not bolted on for show. I'm a full-stack & mobile developer and fractional CTO. I take ideas from concept to shipped, scaled products: the web app, the mobile app, the infrastructure, and the AI features that make them smart. My pedigree is enterprise - I started my career at SAP in Silicon Valley, the world's #1 enterprise software company, leading ML enablement and development across EMEA - but my home is hands-on building for startups and SMBs who need something real, fast. ⭐ On Upwork: 100% Job Success, 5-star rating, and long-term relationships spanning global corporations to solo founders. 🚀 A few recent builds: 🎓 IT Career Switch ➝ Custom LMS + 500 hours of AI-assisted course content in 8 weeks. Now their long-term innovation partner. 🍽️ The Munch Map ➝ Designed, built & scaled an AI-powered food-review SaaS app - 1m+ views in week one, hundreds of thousands of events weekly. 🎬 FilmWaffle ➝ Rebuilt & scaled an AI-powered film-discovery platform to 5m views/month, migrated with zero downtime. 📍 B2B venue finding platform ➝ Production venue-discovery platform (Django, React, Celery, PostgreSQL) with AI-powered semantic search. 🏢 Kandor ➝ Founding/fractional CTO on a full-stack web and mobile product, from architecture and AI through CI/CD to production. 🧪 Biosense ➝ AI-powered full-stack web app cutting manual root-cause analysis for biotech teams by up to 90%. 🗣️ Audico ➝ Architected & scaled a 40+ language generative-AI voice platform from concept to European commercialisation, as CTO. 📈 Prezien · 📚 Qirnas · ⚡ and more across SaaS, healthcare, edtech and travel. 🛠️ What I actually do: Full product builds and feature work - React, React Native, Expo, Flutter, Django / Node / Rust / FastAPI, PostgreSQL, Cloud (AWS, GCP, Azure, DigitalOcean etc...) & Kubernetes - with AI woven in where it adds value: semantic search, recommendation systems, knowledge graphs, smart automation, LLM-powered workflows, voice & generative features and more... Whether you're rapidly building an MVP, adding an AI feature to an existing app, or scaling to production, I bring a proven 14-year framework to get it shipped. 🚫 What I'm not the fit for: standalone model training, data labelling, analytics dashboards, or prompt-only engagements. I build intelligent products - not AI in isolation. ❓ WHAT MAKES ME DIFFERENT? 💡 Creativity ➝ Often overlooked in tech. I have a keen eye for design and love shaping tangible products and services. What we build will be bespoke to your exact needs. 🗣️ Communication ➝ Clients' #1 piece of feedback - and why they keep coming back. Most projects stall on misalignment, not code; a great developer who leaves you in the dark is still a liability. With 14+ years translating complex work for stakeholders at every level (a "Gifted Public Speaker" at SAP, Head of ML Enablement across EMEA, 200+ consultants trained), you'll always know where things stand and why. 🤝 Trust ➝ I run my own businesses, so I know how hard trust is to earn. I'm friendly, open and straight with you from day one, and I'm here for long-term relationships. I'd love to hear what you're working on - reach out and let's build something. You can count on an honest, timely, advisory reply every time 👍🏽

I am a Senior Generative AI Scientist & Full-Stack Developer with multiple years of experience designing, fine-tuning, and deploying advanced AI systems for startups, enterprises, and research labs. My career is built on bridging AI research with production-ready solutions, enabling businesses to harness the power of modern AI through seamless, user-friendly web and mobile applications. 🔹Generative AI & Applied Research I have hands-on expertise with Large Language Models (LLMs) such as GPT, LLaMA, and Mistral, specializing in: Fine-tuning, evaluation, and quantization for efficiency. Building Retrieval-Augmented Generation (RAG) pipelines with vector databases (FAISS, Chroma, Pinecone). Developing multimodal AI systems integrating text, images, audio, and video. Designing advanced chatbots and assistants with contextual memory, voice interaction, and personalized responses. Implementing AI for document summarization, translation, Q&A, and OCR-driven processing. Leveraging Hugging Face, LangChain, Ollama, and other frameworks for enterprise AI deployments. I focus on transforming cutting-edge research into real-world applications, ensuring each solution is reliable, efficient, and scalable. 🔹Full-Stack Web & Mobile Development Beyond AI, I specialize in building the platforms that deliver AI to end users. I design and develop complete frontend and backend systems that make advanced AI tools accessible: Frontend: React.js, Next.js, Tailwind CSS, TypeScript → responsive, modern, and interactive user interfaces. Backend: Node.js, FastAPI, Express.js → scalable APIs, secure integrations, and real-time communication. Databases & Storage: MongoDB, PostgreSQL, Firebase → structured and unstructured data handling. Mobile Apps: React Native, Kotlin, and Android → cross-platform apps with native performance. DevOps & Deployment: Docker, Kubernetes, AWS, GCP → secure, production-ready hosting. UI/UX for AI: Designing intuitive dashboards, chat interfaces, and analytics panels tailored for AI-driven applications. This full-stack expertise ensures I don’t just build the AI engine — I also create the interfaces, dashboards, and mobile/web experiences that make AI practical and impactful for real users. 🔹Key Strengths & Capabilities LLMs: GPT, LLaMA, Mistral → fine-tuning, embeddings, optimization. RAG & Vector Databases: FAISS, Chroma, Pinecone. Multimodal AI: speech-to-text, text-to-speech, OCR, image-to-text. AI Applications: chatbots (text + voice), assistants, summarization tools, translation, recommendation systems. Full-Stack Development: React.js, Next.js, Tailwind, Node.js, FastAPI, Express.js. Mobile Development: React Native, Kotlin, Android. DevOps: Docker, Kubernetes, AWS, GCP, CI/CD pipelines. Data Security: local hosting, privacy-first architectures, policy-driven systems. Research to Product: prototype design, whitepapers, applied research, SaaS platforms. 🔹Industry Applications Delivered I have successfully delivered AI-powered platforms and web/mobile apps across: Healthcare – patient chatbots, medical document summarization. Education – bilingual AI tutors, university chatbot platforms. Finance – fraud detection support, AI-based document parsing. Legal – contract summarization, knowledge-driven assistants. Marketing & Customer Support – multilingual chatbots, voice-enabled service agents, data-driven analytics. 🔹My Philosophy I believe AI is only as powerful as the experience delivered to users. That’s why I combine scientific AI expertise with end-to-end software engineering, ensuring businesses not only get powerful AI engines but also beautiful, intuitive, and scalable platforms to deploy them. If you are looking for someone who can design, build, and deploy AI-powered web or mobile applications from the ground up, I can help you turn your ideas into real-world, production-ready solutions. Let’s collaborate to build the next generation of Generative AI-powered platforms.

𝗠𝗼𝘀𝘁 𝗰𝗼𝗺𝗽𝗮𝗻𝗶𝗲𝘀 𝗲𝘅𝗽𝗲𝗿𝗶𝗺𝗲𝗻𝘁𝗶𝗻𝗴 𝘄𝗶𝘁𝗵 𝗔𝗜 𝗾𝘂𝗶𝗰𝗸𝗹𝘆 𝗿𝗲𝗮𝗹𝗶𝘇𝗲 𝗼𝗻𝗲 𝘁𝗵𝗶𝗻𝗴. 𝗔 𝗺𝗼𝗱𝗲𝗹 𝗮𝗹𝗼𝗻𝗲 𝗱𝗼𝗲𝘀𝗻’𝘁 𝗰𝗿𝗲𝗮𝘁𝗲 𝘃𝗮𝗹𝘂𝗲. 𝗪𝗵𝗮𝘁 𝗺𝗮𝘁𝘁𝗲𝗿𝘀 𝗶𝘀 𝗵𝗼𝘄 𝗶𝘁’𝘀 𝘁𝗿𝗮𝗶𝗻𝗲𝗱, 𝗼𝗽𝘁𝗶𝗺𝗶𝘇𝗲𝗱, 𝗮𝗻𝗱 𝗱𝗲𝗽𝗹𝗼𝘆𝗲𝗱 𝗶𝗻 𝗿𝗲𝗮𝗹 𝘀𝘆𝘀𝘁𝗲𝗺𝘀. I specialize in building and deploying machine learning and Large Language Model (LLM) systems that solve real business problems, from intelligent assistants to data-driven automation and scalable AI services. With a background in machine learning engineering and software development, I focus on turning AI ideas into reliable, production-ready solutions. 𝗟𝗮𝗿𝗴𝗲 𝗟𝗮𝗻𝗴𝘂𝗮𝗴𝗲 𝗠𝗼𝗱𝗲𝗹 (𝗟𝗟𝗠) 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 Modern AI products rely on powerful language models, but they need proper architecture to perform well. 𝐈 𝐝𝐞𝐯𝐞𝐥𝐨𝐩 𝐋𝐋𝐌-𝐩𝐨𝐰𝐞𝐫𝐞𝐝 𝐚𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬 𝐬𝐮𝐜𝐡 𝐚𝐬: AI chatbots and assistants knowledge retrieval systems AI copilots for internal teams automated research tools intelligent data analysis assistants These systems combine LLM reasoning with external data sources, APIs, and business tools. Retrieval-Augmented Generation (RAG) Systems Many businesses want AI that can answer questions using their own internal data. 𝗜 𝗯𝘂𝗶𝗹𝗱 𝗥𝗔𝗚 𝗽𝗶𝗽𝗲𝗹𝗶𝗻𝗲𝘀 𝘁𝗵𝗮𝘁 𝗰𝗼𝗻𝗻𝗲𝗰𝘁 𝗹𝗮𝗻𝗴𝘂𝗮𝗴𝗲 𝗺𝗼𝗱𝗲𝗹𝘀 𝘁𝗼: company documents and PDFs internal knowledge bases customer support data CRM systems business databases and APIs 𝗖𝗼𝗿𝗲 𝗰𝗼𝗺𝗽𝗼𝗻𝗲𝗻𝘁𝘀 𝗶𝗻𝗰𝗹𝘂𝗱𝗲: LangChain and LlamaIndex pipelines vector search infrastructure semantic retrieval optimization hallucination reduction strategies This allows AI systems to produce accurate answers grounded in company knowledge. 𝗠𝗮𝗰𝗵𝗶𝗻𝗲 𝗟𝗲𝗮𝗿𝗻𝗶𝗻𝗴 𝗠𝗼𝗱𝗲𝗹 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 Beyond LLMs, I build and optimize traditional machine learning and deep learning models. 𝗧𝘆𝗽𝗶𝗰𝗮𝗹 𝗽𝗿𝗼𝗷𝗲𝗰𝘁𝘀 𝗶𝗻𝗰𝗹𝘂𝗱𝗲: predictive analytics models recommendation systems NLP and text analysis models classification and forecasting models AI-powered data processing pipelines The goal is always to create models that deliver measurable business insights. 𝗟𝗟𝗠 𝗙𝗶𝗻𝗲-𝗧𝘂𝗻𝗶𝗻𝗴 & 𝗠𝗼𝗱𝗲𝗹 𝗢𝗽𝘁𝗶𝗺𝗶𝘇𝗮𝘁𝗶𝗼𝗻 Every AI system performs better when adapted to its specific task. 𝗜 𝘀𝗽𝗲𝗰𝗶𝗮𝗹𝗶𝘇𝗲 𝗶𝗻 𝗶𝗺𝗽𝗿𝗼𝘃𝗶𝗻𝗴 𝗟𝗟𝗠 𝗽𝗲𝗿𝗳𝗼𝗿𝗺𝗮𝗻𝗰𝗲 𝘁𝗵𝗿𝗼𝘂𝗴𝗵: LoRA and QLoRA fine-tuning prompt engineering and optimization model evaluation and testing task-specific LLM adaptation structured output pipelines 𝗧𝗵𝗶𝘀 𝗶𝗺𝗽𝗿𝗼𝘃𝗲𝘀 𝗮𝗰𝗰𝘂𝗿𝗮𝗰𝘆, 𝗿𝗲𝗹𝗶𝗮𝗯𝗶𝗹𝗶𝘁𝘆, 𝗮𝗻𝗱 𝗱𝗼𝗺𝗮𝗶𝗻-𝘀𝗽𝗲𝗰𝗶𝗳𝗶𝗰 𝗽𝗲𝗿𝗳𝗼𝗿𝗺𝗮𝗻𝗰𝗲. 𝗠𝗟𝗢𝗽𝘀 & 𝗔𝗜 𝗜𝗻𝗳𝗿𝗮𝘀𝘁𝗿𝘂𝗰𝘁𝘂𝗿𝗲 AI solutions must run reliably in production environments. I implement MLOps pipelines that ensure models remain scalable and maintainable. 𝗧𝗵𝗶𝘀 𝗶𝗻𝗰𝗹𝘂𝗱𝗲𝘀: model deployment pipelines experiment tracking with MLflow containerized inference services CI/CD for machine learning systems monitoring model performance and drift 𝗧𝗵𝗲𝘀𝗲 𝗽𝗿𝗮𝗰𝘁𝗶𝗰𝗲𝘀 𝗵𝗲𝗹𝗽 𝗯𝘂𝘀𝗶𝗻𝗲𝘀𝘀𝗲𝘀 𝗺𝗼𝘃𝗲 𝗳𝗿𝗼𝗺 𝗔𝗜 𝗽𝗿𝗼𝘁𝗼𝘁𝘆𝗽𝗲𝘀 𝘁𝗼 𝘀𝘁𝗮𝗯𝗹𝗲 𝗽𝗿𝗼𝗱𝘂𝗰𝘁𝗶𝗼𝗻 𝘀𝘆𝘀𝘁𝗲𝗺𝘀. End-to-End AI System Development I support the full lifecycle of machine learning and AI projects. This includes: AI solution architecture and planning data preparation and model training backend AI service development API integrations with applications cloud deployment and monitoring The focus is always on building AI systems that integrate smoothly with existing products and workflows. 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝘆 𝗦𝘁𝗮𝗰𝗸 Programming & ML Frameworks Python, PyTorch, TensorFlow, Scikit-learn 𝗟𝗟𝗠 & 𝗔𝗜 𝗙𝗿𝗮𝗺𝗲𝘄𝗼𝗿𝗸𝘀 LangChain, LlamaIndex, Hugging Face Fine-Tuning & Optimization LoRA, QLoRA, Prompt Engineering 𝗩𝗲𝗰𝘁𝗼𝗿 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲𝘀 Pinecone, FAISS, Weaviate, ChromaDB 𝗕𝗮𝗰𝗸𝗲𝗻𝗱 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 FastAPI, Flask, REST APIs 𝗗𝗲𝗽𝗹𝗼𝘆𝗺𝗲𝗻𝘁 & 𝗜𝗻𝗳𝗿𝗮𝘀𝘁𝗿𝘂𝗰𝘁𝘂𝗿𝗲𝘃 Docker, Kubernetes AWS, Google Cloud, Azure 𝗪𝗵𝗮𝘁 𝗜 𝗛𝗲𝗹𝗽 𝗕𝘂𝘀𝗶𝗻𝗲𝘀𝘀𝗲𝘀 𝗕𝘂𝗶𝗹𝗱 AI chatbots and assistants knowledge base AI systems document analysis and processing tools predictive machine learning models AI automation workflows scalable AI backend services 𝗪𝗵𝘆 𝗖𝗹𝗶𝗲𝗻𝘁𝘀 𝗪𝗼𝗿𝗸 𝗪𝗶𝘁𝗵 𝗠𝗲 strong combination of ML research and engineering focus on production-ready AI systems scalable architectures designed for real use clear communication and reliable delivery practical solutions that create business impact If you’re building an AI product, machine learning system, or LLM-powered application, I’d be happy to discuss how we can implement the right solution. 𝗞𝗲𝘆𝘄𝗼𝗿𝗱𝘀 Machine Learning Engineer, LLM Engineer, Generative AI Developer, AI Model Development, RAG Pipeline Development, LangChain Developer, LlamaIndex Expert, LLM Fine Tuning, AI Chatbots

Hello! Are you looking for an experienced Machine Learning Engineer to help you build, deploy, and optimize AI solutions? You’re in the right place! I’m Hamza, an ML Engineer with over two years of experience working on real-world AI applications, including insurance claim processing, document intelligence, and chatbot development. I specialize in LLMs, Retrieval-Augmented Generation (RAG), MLOps, and cloud-based deployments (AWS/GCP). What I Can Do for You: 🚀 Large Language Models (LLMs) & Chatbots ✅ Fine-tuning GPT-3, GPT-4, Mistral, LLaMA, Falcon ✅ RAG-based Q&A systems for efficient document retrieval ✅ Custom LLM-powered chatbots (LangChain, LlamaIndex) ✅ Prompt engineering & response optimization 📊 Machine Learning & Data Science Solutions ✅ Predictive modeling & data-driven decision-making ✅ Insurance claim analytics – improving model accuracy up to 86% ✅ ETL & Data Engineering – structuring unstructured data using Mistral LLMs ✅ NLP, sentiment analysis, text classification 🛠️ MLOps & Cloud Deployment ✅ End-to-end ML pipelines on GCP, AWS ✅ Model monitoring, CI/CD, Docker, Kubernetes ✅ MLflow, Airflow, and scalable API deployments Why Work With Me? 🔹 Proven success in delivering impactful ML solutions 🔹 Fast learner & problem solver – I quickly adapt to new challenges 🔹 Client-focused – I ensure high-quality results & ongoing support Let’s discuss your project and bring your AI ideas to life! 📩 Contact me, and let’s get started! Best regards, Hamza

I am a Senior AI/ML Engineer with 8+ years of experience designing and deploying scalable Artificial Intelligence systems. I specialize in Large Language Models (LLMs), Generative AI, Deep Learning, NLP, and AI-powered applications that help businesses automate processes, extract insights from data, and build intelligent products. I have strong experience building AI-powered platforms, chatbots, recommendation systems, computer vision solutions, and LLM-based applications using modern frameworks and cloud infrastructure. My expertise includes end-to-end AI system development from research and model training to production deployment and monitoring. What I can help you build • LLM Applications (GPT, LLaMA, Claude, Mistral) • RAG Systems with vector databases (Pinecone, FAISS, Weaviate, ChromaDB) • AI Chatbots & Conversational AI for web, Slack, WhatsApp, Telegram • Generative AI solutions (text, image, and code generation) • Custom NLP pipelines (NER, sentiment analysis, classification, summarization) • Deep Learning models for prediction, automation, and data intelligence • Computer Vision systems (object detection, image classification) • Agentic AI systems using LangChain, LangGraph, and LlamaIndex • Model training, fine-tuning and optimization (LoRA, PEFT, quantization) • MLOps pipelines and scalable AI deployment Technologies & Tools: AI / Machine Learning TensorFlow, PyTorch, Keras, Scikit-learn, Hugging Face LLM & GenAI OpenAI API, LangChain, LlamaIndex, Transformers, RAG architectures Deep Learning CNN, RNN, LSTM, Transformers, GANs, Autoencoders Vector Databases Pinecone, FAISS, Weaviate, Milvus, Qdrant Cloud & Infrastructure AWS, GCP, Azure, Docker, Kubernetes, CI/CD Languages Python, Bash/Shell scripting Why work with me ✔ 8+ years of AI/ML experience ✔ Production ready AI systems ✔ Scalable architectures for startups and enterprises ✔ Strong research + engineering background ✔ Clean, maintainable, well-documented code If you're looking to build AI products, LLM applications, intelligent chatbots, or scalable machine learning systems, feel free to reach out.

I build AI-powered SaaS products, MVPs, and custom web applications for startups and businesses. 7+ years of experience with React, Next.js, Node.js, Python, PostgreSQL, and AI integrations. 200+ project successfully completed. AI SaaS Developer | Full-Stack Engineer specializing in AI Agents, OpenAI, Claude, RAG, React, Next.js, Node.js, Python, and Startup MVPs. I help founders launch scalable AI-powered products, SaaS platforms, and mobile apps from idea to production. I help startups and SaaS companies ship AI-powered mobile apps and full-stack MVPs, fast, clean, and production-ready. 3 apps launched with 5★ ratings and 50K+ combined downloads; now bringing the same execution standard to AI integration, LLM-powered products, and SaaS platforms. ━━━━━━━━━━━━━━━━━━━━━━ AI & Automation Services : - AI chatbot & agent development (LangChain, OpenAI API, RAG pipelines) - LLM integration into existing SaaS and web apps - AI workflow automation with n8n and Python - Custom GPT tools, voice AI, and document AI - Multi-agent systems (CrewAI, AutoGen) ━━━━━━━━━━━━━━━━━━━━━━ Mobile App Development : - React Native (iOS + Android) — single codebase, 40% cost saving - MVP to App Store launch in 4–6 weeks - FinTech budgeting app: 15K downloads, 4.9★ rating - Health tracking app: React Native + Node.js backend - E-commerce app: Stripe + Shopify API integration - App Store & Play Store publishing included ━━━━━━━━━━━━━━━━━━━━━━ Full-Stack & SaaS MVP : - React, Next.js, Node.js, Laravel, Python (FastAPI/Flask) - SaaS architecture, subscription billing, multi-tenancy - REST & GraphQL APIs, Firebase, PostgreSQL, MongoDB - AWS, Docker, scalable backend deployment ━━━━━━━━━━━━━━━━━━━━━━ Best fit for: → Startup founders building an AI-powered product or mobile MVP → SaaS companies adding AI features or a mobile companion app → Businesses automating workflows with AI agents and LLMs → Teams needing a senior dev who owns the full product cycle UK-based. Available for long-term contracts and dedicated engagements. Let's build something worth shipping. Invite me to your project. Thanks, Sarpreet Tags : AI Integration | AI Chatbot Development | OpenAI API Integration | LangChain Developer | RAG Pipeline Development | LLM Engineer | AI Agent Developer | Generative AI Developer | AI Workflow Automation | n8n Automation | AI SaaS Development | Autonomous AI Agent | Custom GPT Development | AI Automation Expert | Voice AI Agent | Multi-Agent Systems | Full Stack Developer | React Native Developer | Mobile App Developer | SaaS MVP Developer | MVP Development Next.js Developer | Node.js Developer | Python Developer | FastAPI Developer | REST API Development | TypeScript Developer | iOS Android Developer | SaaS Backend Developer | API Integration Expert | React Developer | Shopify API Developer | GraphQL Developer | MongoDB Developer | Laravel PHP Developer | Expo React Native | Push Notifications | Frontend Developer | Backend Developer | NLP Engineer | AI Copilot Development Document AI | Agent | SaaS, PHP, React, Node.js, Claude, ChatGPT API, MERN Stack, React, Next.js, Node.js, NestJS, ExpressJS, React Native, TypeScript, JavaScript, MongoDB, MySQL, PostgreSQL, Supabase, OpenAI API, AI Development, Node.js, RESTful API, ChatGPT API, DALL-E API, OpenAI API, GPT-4 API, AI Model Integration, Java, JavaScript #AIDeveloper #AISaaS #GenerativeAI #OpenAI #ClaudeAI #AIAgents #RAG #LangChain #LLM #AIAutomation #MCP #PythonDeveloper #FastAPI #NextJS #ReactJS #NodeJS #ReactNative #MobileAppDevelopment #SaaSDevelopment #MVPDevelopment #FullStackDeveloper #APIIntegration #AWS #StartupDevelopment #SoftwareEngineer #fullstack