Wiring bits to bring people together.
são paulo → pittsburgh
joaobarbosa@cmu.edu
Things I've built with people.
founding engineer · 2026—
An AI-native operating system for restaurants. I own architecture across the agentic stack while we scale from pilot to dozens of clients across North America and Asia.
quantitative software engineer intern · jul–aug 2026
Real-time risk and position tracking for the credit trading desk, attributing hundreds of millions in annual P&L across asset classes.
FOCUS program · 2026.05
Invitation-only program for first-years: low-latency systems, OCaml, quantitative trading infrastructure.
software engineer intern → junior engineer · 2024–26
11 Kotlin and Go services on Kubernetes powering order integration: 600M+ requests a day at 99.9999% uptime for 400K+ restaurants.
Designed and launched the Order External Audit API over 50M daily log records, queried 6K+ times a month; cut integrator support requests by 18%.
technical lead, rede mulher empreendedora · 2026—
Mentorship matching for 3M+ women entrepreneurs in Brazil: embedding retrieval and ranking, sub-second, at 100× lower cost than naive LLM calls.
Particles on Canvas (2024): particle collision data into digital art, 1st in Latin America in a CERN-sponsored competition.
Pandemica (2023–24): a 1M-agent epidemic simulation at 58.5% MAPE, outperforming two benchmark models. Honors thesis, 4th at Brazil’s largest STEM fair.
Treemux (2026.02): an idea-to-deployment agent swarm, built at Stanford TreeHacks.
Carnegie Mellon University, BS in computer science, class of 2029.
Technology fellow at Fundação Estudar; founding member and national multi-medalist, STEM olympiad club.