I build backend systems and AI-powered applications that actually run in production — not just prototypes. Most of my work focuses on: * FastAPI / Django backends handling real traffic * AI integrations (LLMs, RAG pipelines, automation) * Web automation & scraping at scale (Playwright, Selenium, anti-bot handling) * Data-heavy systems and APIs (PostgreSQL, MongoDB, Redis) I’ve built systems like: * AI language learning platform with speech + content generation * Automation tools processing large-scale web data with proxy handling * Trading bots and real-time systems with WebSocket integrations * AI-powered assistants using OpenAI, Groq, and TTS pipelines On the frontend, I use React / Next.js when needed, but my main strength is backend architecture, performance, and reliability. What you can expect working with me: * clean, scalable architecture (not quick hacks) * strong focus on performance and stability * reliable delivery and clear communication * ability to take ownership of complex systems Tech stack I use most: Python (FastAPI, Django, Flask), PostgreSQL, Redis, Docker, AWS, React/Next.js, Playwright, Selenium If your project involves backend systems, AI features, or automation — I can help you design and ship it properly. Available to start immediately. Open to long-term collaboration.

Availability: Full-time freelancer, 𝟰𝟬+ hours/week, open to long-term collaborations. I’m a Full-Stack & AI Engineer with 10+ years of experience building web and mobile applications and 3+ years of specialized experience in AI and Large Language Models (LLMs). I design, develop, and deploy production-grade platforms, from scalable SaaS dashboards to AI-powered assistants, RAG systems, and voice agents. I work end-to-end: architecture → backend → frontend → cloud deployment, with a focus on clean code, maintainable systems, and high performance. Over the past few years, I’ve delivered solutions that integrate AI/LLM pipelines, vector search, real-time chat, and voice agents for enterprise and startup clients. 🤖 AI & LLM Expertise - MCP Server Development: Designing and integrating custom MCP servers for AI agents, enabling structured tool usage, external system integrations, database querying, and API orchestration. - Fine-Tuning: Persona creation, Q&A systems, and domain-specific models (medical, legal) using Mistral and Llama 3. - Synthetic Dataset Generation: Streamlining LLM training with high-quality datasets. - Evaluation Frameworks: Assessing LLM performance with custom metrics. - Cloud Deployment: Deploying LLMs on AWS and GCP. - AI Agents & Voice Bots: Proficient with LiveKit, Retail AI, OpenAI. - Open-Source Deployment: Expertise deploying models like vLLM on AWS/GCP/RunPod using SkyPilot. 🛠️ 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 𝗧𝗼𝗼𝗹𝘀 & 𝗙𝗿𝗮𝗺𝗲𝘄𝗼𝗿𝗸𝘀 ➜ LLM Tools: LangChain, Langsmith, Langfuse , Hugging Face, Transformers. ➜ Vector Databases: Chroma, FAISS, Pinecone, Qdrant , Opensearch ➜ AI Workflows: Flowise AI, LangFlow, StackAI. 🛠️ 𝗙𝘂𝗹𝗹 𝗦𝘁𝗮𝗰𝗸 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲 ➜ Languages & Frameworks: Python, Node.js, ReactJS. ➜ Database Management: MongoDB, MySQL, PostgreSQL , Supabase , FIrebase ➜ Frontend & Backend Integration: Seamlessly connecting APIs and user interfaces. 🌟 𝗔𝗱𝘃𝗮𝗻𝗰𝗲𝗱 𝗦𝗸𝗶𝗹𝗹𝘀 ➜ Open-Source LLMs: Proficiency in LLAMA 3, Mistral 7B, and Mixtral 8x7B. ➜ Prompt Engineering: Expertise in techniques like Chain of Thought, Few-shot Prompting, and Self-Reflection. ➜ Fast Inference: Implementing high-speed solutions with vLLM . 🌟 𝗪𝗵𝘆 𝗖𝗵𝗼𝗼𝘀𝗲 𝗠𝗲? With over 10 years of experience, I deliver scalable, cutting-edge solutions tailored to your project’s needs. Whether it's advanced AI models, MCP server development, LLM optimization, or full-stack development, I ensure top-notch results every time. Let’s collaborate to bring your ideas to life!

I build AI-powered automation systems that quietly eliminate manual work so your team focuses on what actually needs a human. No fragile Zapier demos. No bolted-together MVPs. Production ready infrastructure that compounds: AI agents, Python back‑ends, and n8n workflows that handle the ugly edge cases. What I do AI Agent Development & LLM Orchestration: Multi‑step autonomous agents that handle client communications, document processing, approvals, and reporting. Deep prompt engineering so agents actually understand your business. Back‑End Automation & Python Systems: FastAPI, PostgreSQL, and custom Python scripting for when no‑code hits its ceiling. Clean, documented, maintainable code built for production. Workflow & CRM Automation: End‑to‑end n8n / Make pipelines, Google Workspace & API integrations, marketing automation, and task automation that keep your CRM and operations flowing silently. Who I work with Founders and ops leaders scaling teams where spreadsheets and manual handoffs are now a bottleneck. You need systems that survive week two and keep getting smarter. How I work When you reach out, I don’t send a template. I’ll reply with a personalised Loom video, walking through exactly how I’d tackle your bottleneck. Once we kick off, I’m incredibly communicative; You’ll get daily updates, so you always know what’s happening and what’s next. At handover, you won’t be left guessing: I deliver full documentation PDFs and walkthrough Loom videos explaining how every system works. That’s non‑negotiable for me; I make sure your team can own and operate everything confidently, long after I’m done. Send me a message, and I’ll prove it in the first reply. My Expertise Python · FastAPI · PostgreSQL · n8n · Make · API Integration · Google APIs · Google Workspace · AI Agent Development · Prompt Engineering · LLM Prompt Engineering · Back‑End Development · CRM Automation · Marketing Automation · Task Automation · Business Process Automation If your business depends on someone doing the same manual task every day, that’s a system waiting to be built. Let’s talk.

I am a Machine Learning and Computer Vision Engineer specializing in intelligent document processing, OCR, receipt extraction, multi-receipt segmentation, and classification systems. I build end-to-end AI pipelines that convert PDF files into clean, structured and fully automated datasets using state-of-the-art deep learning models. My expertise includes: • OCR-based text extraction (Tesseract, PaddleOCR, EasyOCR) • YOLO segmentation for multi-receipt detection • Receipt classification using EfficientNet, ConvNeXt, custom CNNs • Full automation pipelines: PDF → Images → Routing → Segmentation → Extraction • Data preprocessing, augmentation, dataset creation • Custom ML model training and optimization • Deployable, production-ready inference scripts and APIs I can help you with: • Extracting structured data from complex receipts and invoices • Building custom AI models for classification, detection, segmentation • Automating manual document workflows • Improving accuracy and scalability of existing ML/CV systems • Creating robust solutions that work with real-world noisy data Why clients work with me: • Clean, modular, production-level code • Fast communication and reliable delivery • Results that are measurable, accurate, and scalable • Experience building a complete IDP (Intelligent Document Processing) pipeline from scratch If you need a high-accuracy, fully automated document processing or computer vision solution, I would be happy to help. Let’s build something powerful together.

I help companies and startups build scalable, production-ready AI systems and infrastructure that integrate seamlessly into business processes from intelligent chatbots and autonomous AI agents to distributed data pipelines, vector databases, and enterprise workflow automation. Beyond just building, I focus on solving business-critical problems: - Reducing operational inefficiencies by automating repetitive workflows and embedding AI into daily processes - Fixing scalability bottlenecks with cloud-native AI infrastructure and system-level architecture designed for high-volume data and real-time decision-making - Eliminating integration headaches by connecting CRMs, ERPs, and SaaS tools with secure, production-ready APIs - Building custom scripts & backend automations to orchestrate AI systems, pipelines, and workflows - Improving reliability & accuracy of AI systems through fine-tuning, RAG pipelines - Cutting costs & accelerating time-to-market with AI-powered automation, optimized workflows, and scalable infrastructure - Unlocking new revenue opportunities via customer-facing AI agents ✅About Me I am a Senior AI Technical Developer, Machine Learning Engineer, and Automation Architect with 5+ years of experience designing, deploying enterprise-grade AI infrastructure that helps startups scale and enterprises stay ahead of the competition, AI-driven applications, large-scale data pipelines, and cloud-native AI infrastructure. My expertise spans Generative AI, Large Language Models (LLMs), Multi-Agent Systems, Data Engineering, AI Infrastructure Design, MLOps, API Development, and Full-Stack AI solutions. Services I Provide ✅Scripting & Automation Python scripting for automation, data processing, and API integrations Custom scripts for ETL pipelines, log processing, and system monitoring AI-powered automation combining LLMs with workflow tools (Zapier, n8n, Make.com, Pipedream) Task automation across CRMs, ERPs, and SaaS platforms to reduce manual workload Server-side scripting & backend automation for event-driven AI applications Multi-step automation pipelines connecting APIs, databases, and AI agents End-to-end business process automation from lead generation to intelligent reporting dashboards ✅Automation & AI-Powered Workflows Business process automation with Zapier, Make.com, n8n, Pipedream AI workflow orchestration (real-time + batch processing) CRM & ERP automation (HubSpot, Salesforce, Zoho, GoHighLevel, Shopify) RPA (Robotic Process Automation) for repetitive workflows End-to-end automation pipelines integrated with AI systems ✅AI Integration Seamless integration of AI models (LLMs, vision, speech, multimodal) into existing business systems End-to-end AI integration with CRMs, ERPs, and SaaS platforms (Salesforce, HubSpot, Zoho, GoHighLevel, Shopify) Custom middleware & connectors to bridge AI agents with APIs, data warehouses, and enterprise applications Embedding AI into workflows for customer support, lead generation, analytics Secure & scalable API integrations for payments, marketing platforms, and cloud-based services Hybrid cloud/on-prem AI deployment ✅Tools & Technologies Automation Platforms: Zapier, n8n, Make.com, Integromat, Pipedream AI/ML Frameworks: PyTorch, TensorFlow, HuggingFace, Scikit-Learn, LangChain LLMs & Generative AI: GPT-4, Claude, LLaMA, Mistral, Stable Diffusion, ElevenLabs Vector Databases: Pinecone, Weaviate, Milvus, Chroma, Elasticsearch, Supabase Databases: MySQL, PostgreSQL, MongoDB, Redis, DynamoDB, Firebase Data Tools: Apache Airflow, Spark, dbt, Hevo, Talend Cloud Platforms: AWS, GCP, Azure (ML, Storage, Compute, Deployment) DevOps & Infrastructure: Docker, Kubernetes, GitHub Actions, Terraform, Jenkins, MLflow, Weights & Biases Why Choose Me? ✅ Senior AI Infrastructure Architect – designing scalable AI systems, databases, orchestration frameworks, ✅ Automation & Scripting Engineer – building custom Python scripts, backend automations, and enterprise-grade RPA workflows ✅ AI Integration Specialist – proven track record integrating AI with CRMs, ERPs, SaaS tools, APIs, and enterprise infrastructure ✅ Generative AI & Full-Stack AI Specialist – expertise in GPT-4, Claude, LLaMA, RAG, fine-tuning, and building end-to-end AI applications ✅ AI System Developer – delivering seamless front-end + back-end AI systems ✅ Proven Results – 300+ projects 🏆 Specialties for Upwork Clients AI Developer for startups & enterprise AI adoption Machine Learning Engineer for scalable AI infrastructure Generative AI Expert for Chatbots, Agents, and RAG pipelines Workflow Automation Specialist (Zapier, n8n, Make.com) API Developer & SaaS Integration Expert Let’s Build Your AI Future If you’re looking for a Top-Rated AI Developer who combines technical depth with production-ready AI infrastructure and automation, let’s talk. I specialize in building scalable, automated, and intelligent systems that drive measurable business impact. 📩 Message me today to start your project.

Hello! I'm Abdul, a Senior Python Developer with over 7 years of experience in crafting scalable web applications and APIs using Django and FastAPI. My passion lies in solving complex problems and delivering high-quality solutions that drive real impact for clients. I have a strong background in backend development, coupled with expertise in database management using PostgreSQL, MySQL, and MongoDB. I specialize in API development and have hands-on experience with web scraping, employing powerful libraries like BeautifulSoup and Selenium. Beyond Python, I am proficient in frontend technologies like React.js and Vue.js, enabling me to create full-stack solutions. I'm dedicated to optimizing performance and security, ensuring that your systems run smoothly and efficiently. Let's collaborate to bring your projects to life — I invite you to reach out and discuss how I can help turn your ideas into reality!

Need a Telegram bot with AI, a reliable backend API, or a Python automation that just works? I build production-ready solutions — fast and clean. WHAT I DELIVER: → Telegram & AI bots — from simple command bots to full AI assistants powered by OpenAI (GPT / Assistants API), handling 500+ requests/day → Backend APIs — Django and FastAPI REST APIs for mobile and web apps, including auth, payments, real-time features (WebSockets), and async task processing (Celery + Redis) → Automation & scraping — data collection, workflow automation, third-party API integrations RECENT RESULTS: • 30+ production projects delivered with 95%+ client satisfaction • AI support chatbot: 500+ daily requests, 90% resolved automatically • Booking platform serving 50+ business locations • Trading system: 10,000+ daily transactions, 99.9% uptime • Telegram bot with 1,000+ active users integrated into a task platform TECH STACK: • Python, Django, FastAPI, DRF • PostgreSQL, Redis, Celery, RabbitMQ, Docker • OpenAI API, Telegram (aiogram, Telethon, python-telegram-bot) • AWS (Certified Cloud Practitioner + AI Practitioner), CI/CD • Selenium, Playwright, Web Scraping WHY CLIENTS CHOOSE ME: ✓ I respond within 2 hours during business hours ✓ Clean, tested, documented code — not spaghetti ✓ EU-based (Warsaw, Poland) — timezone-friendly for US & European clients ✓ Full project cycle: requirements → architecture → code → deploy → support Let's talk about your project — send me a message and I'll reply with a concrete plan and timeline.

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'm a UI UX Designer with 14 years of experience in UX/UI Design, UI Design, UX Design, Mobile App Design, Web App Design, SaaS Design, and Figma Design, helping founders, startups, and product teams build clear, intuitive, visually outstanding, and high-converting digital products. As a UI UX Designer specialized in UI/UX design, I design mobile apps, SaaS platforms, dashboards, CRM systems, admin panels, marketplaces, AI products, FinTech products, Healthcare platforms, and complex B2B web apps with the full user journey in mind. ✔️ SaaS & Web App Design As a UI UX Designer and SaaS Web App Designer, I design clear, intuitive, visually outstanding, and high-converting web applications in Figma. As a UI UX Designer, I cover the full UX/UI design process: user flows, wireframes, interactive prototypes, design systems, responsive layouts. As a UIUX designer, I make sure every screen is structured, consistent, visually outstanding, and ready for real users and real development. As a UI/UX Designer, I deliver clean, pixel-perfect, developer-ready Figma files with annotated components, auto-layout, reusable UI elements, and clear developer specs. ✔️ Mobile App Design As a UI UX Designer and Mobile App Designer, I specialize in mobile app design in Figma for iOS and Android products. As a Mobile App Design expert and UI UX Designer, I design mobile apps that feel clear, intuitive, visually outstanding, and ready for real users — from first onboarding to the final core interaction. As a UIUX designer specialized in Mobile App Design, I cover every mobile app screen, user flow, state, and edge case, including onboarding flows, sign-up flows, empty states, error states, loading states, profiles, settings, dashboards, checkout flows, subscriptions, notifications, and core app interactions. ◆ Specific UI/UX Design Approach Deep focus on UI/UX Design for Web Apps and Mobile App Design allows me to give extremely specific advice — not only on how the interface should look, but how the product should work. ◆ SaaS UI/UX Design That Supports Recurring Revenue SaaS products are powerful because subscription revenue builds on itself every month. But recurring revenue only works when users understand the product, adopt key features, and keep coming back. As a UI UX Designer, I design SaaS products with activation, retention, feature adoption, and clear product logic in mind before development starts. ◆ SaaS Products Built for Long-Term Retention Recurring revenue can protect a SaaS business during slow months, downturns, and market shifts — but only if users keep seeing value and stay subscribed. As a UI UX Designer, I focus on clear onboarding, smooth user flows, habit-forming product logic, and interfaces that give users more reasons to return. ◆ SaaS Products Built for High-Margin Growth SaaS can become highly profitable because the cost of serving each additional customer is low. But margins scale only when the product is easy to understand, easy to use, and efficient to operate. As a UI UX Designer, I design self-service onboarding, intuitive dashboards, smooth workflows, and UX/UI design that reduces support requests, manual work, and unnecessary friction. ⚡ How I help you build a better product as a UI UX Designer / UIUX Designer: 1️⃣ UI UX Design Stage 1 — UX Structure & Product Logic As a UI UX Designer, I create a clearer UX structure from the start so the product is built on solid logic, which means you do not end up polishing screens that break under real usage. 2️⃣ UI/UX Design Stage 2 — Critical Flow Testing As a UIUX designer, I test critical flows early in the UI/UX design process so hidden friction is spotted before visual design and development, which means fewer conversion leaks in onboarding, activation, and feature usage. 3️⃣ UI UX Design Stage 3 — Premium UI Look & Feel As a UI UX Designer, I create UI that feels polished, trustworthy, and visually outstanding so users immediately understand the product and enjoy using it, which means stronger trust, higher perceived quality, more confidence in the company behind it, and a product experience people are more likely to remember and recommend. 4️⃣ UI UX Design Stage 4 — Real Content & Product Conditions As a UI/UX Designer, I create design that works with real content so the interface survives actual product conditions, which means it does not collapse when fake placeholder text gets replaced with real names, data, and system states. 5️⃣ UI UX Design Stage 5 — Developer-Ready Handoff As a UI/UX Designer, I prepare handoff with system thinking behind it so implementation is more predictable, which means less dev guesswork, less patching, and fewer handoff problems. ▪ TOP 1% IN MOBILE APP DESIGN AND UI/UX DESIGN ▪ 300+ successful projects ▪ 14 years as a UI UX Designer ▪ 12 Design Awards · 66,000+ Dribbble Followers Looking for an expert UI UX Designer? Let’s connect.

I help e-commerce stores fix the parts of the business that still run manually; sending receipts, following up with customers, tracking orders, using automation built in n8n. I'm Hussein. I build e-commerce automation for Shopify and WooCommerce stores, and automation for service businesses that lose jobs to slow follow-up. If something in your store or business currently takes a person time to do by hand, and it happens the same way every time — I can probably build a system that does it for you. What I build: 🎯 E-commerce automation for Shopify and WooCommerce: order receipts, abandoned cart follow-up, review requests, refund handling. 🎯 WhatsApp automation for customer support and order tracking; including the Meta Business verification needed to get approved and running properly. 🎯 Automated responses to customer messages on SMS, email, WhatsApp, Facebook, and Instagram, so replies go out fast without someone manually typing every one. 🎯 Connecting the tools you already use like your store, your CRM, your spreadsheets so information moves between them without anyone copying and pasting. 🎯 Automating inbox management: sorting, labelling, and replying to routine emails automatically FEEDBACK "We were drowning in unqualified leads from Google Local Ads, every message needed manual follow-up and it was eating our team's time. Hussein built a full intake automation using n8n, Twilio, Sheets and OpenAI that handles lead qualification on its own. We haven't manually processed a single intake lead since it went live." — Sam H. ⭐⭐⭐⭐⭐ Results from real projects: 📍 A Shopify store was manually creating and sending order receipts. I built an n8n automation that does it instead, 294 orders handled automatically in the first month, saving 48.6 hours of manual work. 📍 A service business was missing bookings because leads weren't followed up fast enough. After automating the response with n8n, bookings went up 65%. 📍 A business was spending 40+ hours a week manually sorting and replying to emails. An n8n customer support automation now handles that instead. 📍 A broken system that three other developers couldn't fix, I found and resolved the issue within 24 hours. All these results can be found in my portfolio section How a project works: We talk about what's manual. You tell me what's eating your time; order handling, follow-ups, customer messages, whatever it is. I map it out and show you exactly where the automation would fit, before any work starts. I build it. Using suitable automation platform n8n, Make or Zapier, tested against your real order or message volume, not just a demo version. You get a working system. Live, explained to you in a walkthrough video, with 14 days of support if anything needs adjusting. Who this is for: 📍 Shopify, WooCommerce or E-commerce store owners doing receipts, cart recovery, or order tracking by hand. 📍 Businesses wanting WhatsApp automation for support or order tracking, but stuck on the Meta Business verification step. 📍 Service businesses; roofing, real estate, contracting, cleaning losing jobs because follow-up is too slow. 📍 Not seeing your situation here? Tell me what you're doing manually, let's get your business working on autopilot. Tools I Work With (client-friendly version) Automation platforms: n8n · Make com · Zapier E-commerce: Shopify · WooCommerce Messaging: WhatsApp Business · Twilio (SMS) · Gmail · Meta Business Suite (Facebook & Instagram), ManyChat CRM & lead management: GoHighLevel · HubSpot · Airtable, SimPro AI: OpenAI · Claude, Claude Code Data & spreadsheets: Google Sheets, Google Drive Media: HeyGen, Elevenlabs etc. POS: Loyverse Accounting: Quickbooks QB, Xero KEYWRODS TO FIND ME: e-commerce automation Shopify automation n8n automation workflow automation AI automation WhatsApp automation CRM automation n8n workflow automation expert n8n automation specialist Shopify order automation Shopify to WooCommerce automation abandoned cart recovery automation WhatsApp Business API automation AI lead qualification automation CRM automation GoHighLevel API integration Shopify automated customer follow-up system e-commerce order tracking automation AI chatbot for customer support Meta Business Verification Specialist for WhatsApp Business API E-Commerce Order & Shipping Pipeline n8n Automation Developer AI integrations/Automations