LeoMiranda
I build things that work, and prove that they do.
About
Senior Product Engineer based in Belo Horizonte, Brazil. I build products at the seam between engineering craft and business outcome. 8 years of proof that you don't have to choose between the two.
Full story →Selected Work
Clinic Management SaaS
A Brazilian SaaS for medical clinic management, built end to end. Scheduling, electronic medical records, care orchestration, patient self-booking and subscription billing, on a multi-tenant Rails 8 monolith with clinical data strictly scoped per organization.
View case study →High-Conversion Landing Platform
End-to-end ownership of a high-conversion landing page platform for a Santander Group energy company. From product discovery through to a 23% lift in lead conversion via A/B testing and feature flagging.
View case study →VOD & Marketplace Platform
Three years of end-to-end ownership across a 300k MAU VOD platform and freelancer marketplace. Built the component library, introduced experimentation infrastructure, and drove an 18% uplift in subscription conversion.
View case study →Branch Coverage for the Erlang VM
A year at the compiler level. Built branch coverage tooling for the Erlang VM in collaboration with José Valim (creator of Elixir) and the Dashbit team, extending ExCoveralls to track branch-level execution paths across Elixir production codebases worldwide.
View case study →HR Platform Dismissal Flow
Designed and built the dismissal management flow for a 200k+ user Brazilian HR platform. A high-stakes, legally sensitive process that had to be technically solid and genuinely easy to use.
View case study →