David Lin

About

I’m David, a Senior AI Engineer and Full Stack Developer with deep experience in building production-level AI tools, SaaS platforms, and automation systems. I help startups transform ideas into working products quickly and cost-effectively. I build high-performance AI systems, chatbots, and full-stack SaaS applications for startups and growing companies. If you need an AI-powered MVP, intelligent chatbot, automation system, or a scalable web platform, I can deliver fast, clean, and reliable results. 1. Full-Stack Development for MVPs & SaaS Platforms From idea → prototype → production, I build complete web applications with clean, scalable code. ✔ React / Angular / Next.js front ends ✔ Python / FastAPI / Flask / Node.js / .NET back ends ✔ Realtime features, dashboards, analytics ✔ User authentication and roles ✔ SaaS billing & subscription integration 2. AI Chatbots & Intelligent Assistants I design and build advanced chatbots and AI assistants that improve customer support and automate workflows. ✔ GPT-powered chatbots ✔ Knowledge-base assistants ✔ RAG systems for accurate, document-based answers ✔ Multi-agent AI systems ✔ API integration (OpenAI, LangChain) 3. AI Automation & Backend Integrations Automate your operations and connect your systems with AI. ✔ AI data processing ✔ Predictive analytics ✔ Automation of manual workflows ✔ API Development (REST / GraphQL) ✔ WebSockets, Redis, queues 4. Cloud, Databases & Infrastructure Reliable, scalable deployment environments. ✔ Supabase, Firebase, PostgreSQL ✔ AWS (EC2, Lambda, S3) ✔ Docker, Kubernetes ✔ CI/CD setup and optimization REAL-WORLD PROJECTS ✔ AI chatbot for SaaS platform (increased support capacity by 70%) ✔ RAG-powered knowledge assistant for internal teams ✔ Full SaaS MVP (React + FastAPI + Supabase) launched in 6 weeks ✔ AI analytics dashboard for fintech startup ✔ Automation pipelines reducing manual work by 40–60% WHY CLIENTS HIRE ME ✔ Senior-level expertise in AI + full-stack ✔ Fast delivery without sacrificing quality ✔ Production-ready and scalable solutions ✔ Excellent communication and availability ✔ Clear documentation & clean code ✔ Long-term relationships with clients TECH STACK • Frontend: React, Next.js, Vue.js, Angular, Tailwind CSS • Backend: FastAPI, Python, Flask, Node.js, .NET, Express • AI/ML: OpenAI, LangChain, Pinecone, Qdrant, GPT-4, RAG • Cloud: Supabase, AWS, Firebase, PostgreSQL, Redis, MongoDB • DevOps: Docker, GitHub Actions, Kubernetes, CI/CD • Communication: WebRTC, WebSockets, VoIP LET’S BUILD YOUR IDEA If you have a startup idea, AI vision, or need help with a product - I can build it. Send me a message or invite me to your job. I respond quickly and can start immediately.

Experience

• Lead AI Engineer & Full-Stack Developer · Synaptech Software03-01-2025 – 10-01-2025

  Architecting and launching high-performance AI-powered SaaS platforms with React, Next.js, Supabase, and TypeScript. Developed advanced AI bots, chat-based dashboards, and automation features using Python, OpenAI models, and vector similarity search. Overseeing full product lifecycle, optimizing cloud infrastructure, and delivering scalable solutions for enterprise clients.

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