Abdul B.

Full Stack Developer | AI Agents, LLM, RAG, Chatbot | Web & Mobile App

⭐ Upwork Top Rated Full Stack + AI Engineer | SaaS, AI Agents, Chatbots & Automation I build full-stack SaaS products and AI-powered systems, chatbots, voice agents, RAG assistants, and workflow automation that help businesses scale faster and eliminate manual work. If you need a developer who can own the entire product (frontend + backend + AI + deployment), ship fast, and think like a product engineer, you're in the right place. WHO I HELP Startup founders building MVPs and scaling to product-market fit. SaaS companies adding AI features (copilots, chatbots, smart search) to their platforms. Agencies and businesses automating operations, customer support, lead qualification, knowledge management, and internal workflows. PROBLEMS I SOLVE On the product & engineering side: You need an MVP built fast. Your app is slow and doesn't scale. Your codebase is messy and hard to maintain. You need a production-grade SaaS platform with auth, billing, dashboards, and APIs. On the AI & automation side: Your team wastes hours on repetitive tasks that could be automated. Customers wait too long for support answers. Your knowledge base is scattered and unsearchable. You want to integrate LLMs into your product but don't know where to start. FULL-STACK SOLUTIONS I BUILD SaaS platforms (multi-tenant, billing, RBAC, analytics dashboards). Web applications with Next.js, React, and TypeScript. Cross-platform mobile apps with React Native. RESTful and GraphQL APIs with Node.js and Express. Database architecture with PostgreSQL and MongoDB. Cloud infrastructure on AWS with Docker, CI/CD, and monitoring. AI & AUTOMATION SOLUTIONS I BUILD AI chatbots and customer support bots (OpenAI, Claude, custom LLMs). Voice AI agents for phone-based customer interactions. RAG knowledge assistants, connect your docs, PDFs, and databases to an AI that actually answers questions accurately. AI copilots embedded inside SaaS products. LLM-powered workflow automation with LangChain, n8n, and custom pipelines. AI agent development, autonomous agents that take actions, not just answer questions. Custom integrations with OpenAI, Claude, Gemini, Whisper, and vector databases (Pinecone, embeddings). TECH STACK Frontend: React, Next.js, TypeScript, Tailwind CSS, React Native Backend: Node.js, Express, Nest.js, FastAPI, GraphQL, WebSockets Databases: PostgreSQL, MongoDB, Redis AI/ML: OpenAI (GPT-4, Whisper, Embeddings), Claude, Gemini, LangChain, Pinecone, RAG pipelines, Prompt Engineering Automation: n8n, Zapier, custom workflow engines Infrastructure: AWS (EC2, S3, Route 53), Docker, CI/CD, Nginx, PM2 PROOF 8+ years building production software. Currently engineering an AI voice receptionist platform (real-time STT, LLM orchestration, TTS, telephony integration), not a wrapper, a full AI product. Multiple SaaS platforms built and maintained end-to-end (see portfolio: Avana, Well Send, client projects). Top-rated on Upwork with 100% Job Success Score. WHY CLIENTS HIRE ME I take ownership. You give me a problem, I come back with a working system, not excuses or endless questions. I think in products, not just code. Every decision I make is filtered through "does this help the business?" I communicate clearly and respond within hours. I build for scale from day one, clean architecture, proper testing, production deployments. TYPICAL PROJECTS CLIENTS HIRE ME FOR "Build my SaaS MVP from idea to launch." "Add an AI chatbot to our existing platform." "Build a RAG assistant that answers questions from our internal docs." "Create a voice AI agent for our customer support line." "Automate our manual workflows with AI." "Rebuild our legacy app with modern architecture." "Integrate OpenAI / Claude / LLMs into our product." Tech-stack: ⁃ Front-End Development: React, React Hooks, Vue, JavaScript (ES5 and ES6+), Redux, TypeScript, Tailwind CSS, HTML, Angular, jQuery, Bootstrap, MUI. - Back End: Node.js, Express, Nest.js, Firebase. - AI & Automation: ChatGPT, GPT-4 API, OpenAI API Integration, Claude, Grok, Cursor, Windsurf, Conversational AI, AI Chatbots, LangChain, Prompt Engineering, LLM Prompt Engineering, Whisper API, DALL·E, AI Agent Development, NLP, Automation, Machine Learning, Zapier, n8n, Pinecone, TensorFlow, OpenAI Embeddings ⁃ Database: MySQL, MongoDB, PostgreSQL. - API Integrations: RESTful APIs, REST, FastAPI, GraphQL, ChatGPT, Stripe, Equifax, Google. Analytics, Leedfeeder, Talkto, Sendgrid, email microservices, OpenAPI, WebSockets, Microservice. ⁃ AI Integration: Open AI, Claude, Gemini, ChatGPT, Llama. - Testing/Deployment: Amazon Web Services (AWS), EC2, Linux, Ubuntu, NGINX, s3 Bucket, Firebase, Docker. - Developer Tools: Git, npm, yarn, Agile, TDD, Nginx. READY TO START? Send me a message with a brief description of your project. I'll review it and respond with an honest assessment, a rough approach, and next steps are no fluff, no upsell. Let's build.