Alex Choi
Engineer. Builder. Full-stack, mobile and AI. Based in London.
Explore the interactive project campus or browse the full project archive below.
Projects
- Concord AI — Shared work-state and task memory for coding agents - lets AI agents across a team share context and coordinate their work. Open source, cloud or self-hosted Visit project ↗
- AI Phone — Make AI-powered phone calls - booking reservations, scheduling appointments, and handling enquiries automatically Visit project ↗
- The Reef — 2nd place at Coral Protocol NYC Hackathon - Lovable for AI Agents. Create fully custom AI agents in pure natural language Visit project ↗
- yay.travel — 1st place at World's Largest AI Hackathon - AI agents that coordinate group trips via WhatsApp, handling research, bookings, and payments autonomously
- Aegis — 1st place WithSecure track at Junction 2025 - Deep research agent for cybersecurity teams to evaluate software across malware databases
- sAIpiens — 3rd place at Power of Europe TechMakers - Browser extension agent helping identify European tech alternatives
- Extreme Day Trips — Website and mobile app to find same day round trip flights. Featured in The Telegraph (now exited) Visit project ↗
- Meet in the Middle — Multiple origin flight search tool to find the best meeting point for friends from different cities Visit project ↗
- Strollr — AI Walking Tours - simply type what you'd like to see and AI will make you a tour of the city! Visit project ↗
- Bible Coach AI — Bible-based life coach powered by AI. Get biblical stories, quotes and guidance personalized for your life Visit project ↗
- JetStream Flights — Log your flights and see everywhere you've flown on a beautiful world map Visit project ↗
- Debate Coach — Real-time voice debate with GPT-4o using OpenAI's realtime API, with AI evaluation of argument strength
- AI Palm Reader — 10k+ Google Play downloads, uses GPT-4 vision to determine your fortune! Visit project ↗
- Feng Shui AI — Helps you organize your room with feng shui principles. Hundreds of downloads on iOS and Android. Visit project ↗
- Boarding Pass Scanner — Native Android app with over 1000 downloads on Google Play written in Kotlin Visit project ↗
- FindMyBorough — Master's degree data analytics project to suggest the best borough to live in London Visit project ↗
- TaxBot — RAG-based tax adviser on Irish Tax Law Visit project ↗
- IBM SkillsBuild Chatbot — Thesis project comparing LLM with traditional chatbot models