Retirement Lab
A tax-aware Monte Carlo retirement simulator for expats and geoarbitrage planners. Model real tax brackets across 25 countries, run 10,000 scenarios, and compare retirement outcomes across borders.
Visit Retirement Lab →Cedarwell Labs
Thoughtful software, independently built
One engineer, many agents, a growing catalog.
Products
More on the way
We're working on new products across a range of domains. Stay tuned.
About
Cedarwell Labs is an independent software studio founded by Thiago Hirai, a veteran engineer with two decades of experience at Microsoft, Meta, Snap, and OpenAI.
We are pioneering agentic development — a new approach where experienced engineers and AI agents collaborate to build and ship quality software. This model lets a small, focused team deliver products with the craft and rigor of a much larger organization.