I like programming and selling, which is an odd pair and has worked out so far. The last couple of years have mostly been AI agents in production at startups, most recently Jake, built at Patch. Before that I built an AI maths tutor for the Leaving Cert that made €400 and got me my first engineering job with no degree. Left Trinity to do this full time. Looking for the next thing — me@ethanquarry.com.
Featured Project
OrbitalShield
3rd place at HackEurope 2026 · €2,000 from Susquehanna International Group · 30 hours
30 hours, countless bugs, five concurrent ClaudeCode instances and one of the coolest demos ever.
Today, ~11,000 satellites are actively operating in orbit. Within four years, that number is projected to exceed 100,000. But the number of operators monitoring them? Roughly the same. Satellite operations are still largely manual — critical decisions like anomaly response, collision avoidance, and intent analysis are made by small teams while orbital environments get denser by the month.
So we built something to change that.
OrbitalShield is a real-time space defence platform that fuses live orbital data from SpaceTrack, runs it through Bayesian threat scoring, and deploys a multi-agent AI pipeline to detect, analyse, and recommend responses to hostile satellite behaviour.
In our demo, a Chinese satellite executes an unannounced manoeuvre toward a US reconnaissance asset. OrbitalShield flags the orbit change, pulls 730 days of TLE history, cross-references five intelligence databases, classifies the threat — and executes a trajectory manoeuvre before a human operator would have finished reading the alert. All rendered on a 3D globe with live trajectories, threat lines, and an AI console showing the agents' reasoning in real time.
Ethan Quarry · Harper Dammann Smith · Prince K · William Fahie
Try the demo↗Experience
Founders Associate (work trial) · London
Nine days on-site at an industrial robotics startup that raised a $55M seed in July 2026, the largest in German history. Worked on orchestration of vision-language-action agents for robot deployment, and implemented funnel tracking across the app to cut cost per lead. Project specifics are under NDA.
Founder, Summer Programme · Dublin
Selected for Ireland's programme for exceptional young technologists, backed by OpenAI and Stripe. Built Jake, an AI support agent that configures itself from a company's docs and ticket history and resolves routine tickets. Presented at Demo Day; drew inbound interest from companies including Manna.
Watch the Demo Day talk↗Growth / Software Engineer · New York, remote
Built and deployed a production customer support agent serving 1,100 customers with real-time responses, using semantic search and multi-layer agent orchestration. Optimised Meta ad event tracking, cutting cost per lead from roughly $200 to roughly $30, and set up the monitoring that kept both stable in production.
Software Engineer · Cork
Full-stack development with a distributed team on SST and Next.js. Designed the AI chat interface, built the pipeline that replicates a user's tone of voice on Twitter, wrote end-to-end tests in Playwright, and redesigned onboarding to improve activation.
Founder · Cork
Designed and built an AI tutoring site for Leaving Cert maths. Grew it to 120 users and €400 ARR at 17. The launch video landed my first engineering job, with no degree.
Highlights