Antônio Martins

Engineer interested in AI/ML and design. Based in SF. I write occasionally.

Projects

Agent Bauer - QA Engineer
YCombinator Hackathon

Multi-agent AI QA that learns your codebase and writes tests and PRs live. A Mastra-powered agentic pipeline that clones a GitHub repository in Docker, gathers repository context, generates unit tests, opens PRs with tests, and estimates TypeScript + Vitest coverage.

Live DemoGitHub
Click to see Repo
Samba Agent
YCombinator Hackathon

Autonomous software‑maintenance agent that listens to Sentry, isolates faulty code, proposes the smallest safe GPT‑5 fix, opens a PR, and auto‑reviews follow‑on issues.

click to see project
Neural Network — Email Spam Classifier
Machine Learning

Email spam classifier built with Keras/TensorFlow and scikit‑learn. Trained with class‑weighted binary cross‑entropy and early stopping; reports accuracy, precision, recall, F1, and a confusion matrix.

Click for technical info

Timeline

Astra logo

Co‑Founder, Astra

Building a WhatsApp‑first automation and commerce stack using Meta's Graph API. Own webhook infra, message template orchestration, and payments flows. Focus on reliability, observability, and fast iteration from prototypes to production.

A2C logo

CPTO & Co‑Founder, A2C Solutions

Co‑led architecture across Flutter (mobile/web), NestJS/TypeScript, PostgreSQL, and MongoDB. Shipped LLM+OCR pipelines that cut CPR registration from ~30 min to ~30 s. Led a 3‑dev squad and delivered platforms for agribusiness (CPR and Green CPR issuance).