
Ahmad Sajjad
I build AI chatbots, PDF chat apps, and document assistants
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Experiencia laboral
AI Engineer and Full Stack Web Developer
Freelance Web Designer • Trabajador autónomo
Jul 2025 - Present • 1 yr
Full Stack and AI Engineer with 3 years shipping production ready web apps, AI powered tools, and SaaS platforms for clients across the US, UK, and beyond. Specialized in building AI chatbots powered by OpenAI and LangChain, chat with PDF applications using RAG pipelines, and AI document assistants that turn static files into intelligent knowledge bases. Technical stack includes Next.js, React, Node.js, PostgreSQL, OpenAI API, LangChain, Supabase, and Vercel. Experienced in designing scalable APIs, building role based dashboards, and architecting complete systems from database to deployment. Delivered production systems including ecommerce platforms, SaaS dashboards, automation tools, and AI integrated web applications for real clients with real users.