Leonardo Cardoso
I design pragmatic software for real production constraints: asynchronous workflows, event-driven systems, cloud infrastructure, and developer experience.
Arandu means knowledge in Tupi-Guarani. This is where I show how I think, what I build, and the engineering tradeoffs behind it.
AI-powered incident analysis system that processes logs and alerts asynchronously to generate root cause summaries.
Webhook inspection tool — create unique endpoints, capture incoming requests, and inspect payloads in real time.
FastAPI service that classifies support tickets using LLMs, returning category, priority, sentiment, and suggested responses.
CLI tool that compares OpenAPI 3.0 specs and detects breaking changes across paths, parameters, schemas, and responses.
Financial transaction processor that applies deposits, withdrawals, disputes, and chargebacks to client accounts from CSV streams.
CLI tool for saving and executing named shell commands — bookmarks for complex workflows with runtime argument support.
I build backend systems and developer tools with a focus on reliability, clarity, and real-world constraints. My recent work spans Python services, Rust CLIs, AWS serverless systems, and LLM-backed workflows with strong validation and operational discipline.
If you are hiring for backend, platform, or developer tooling work, I am open to conversations about full-time roles and collaborative projects.