I build iOS apps.

The biggest thing I’ve built is OpenGivingOpenGiving, a marketplace where part of every sale goes to a fundraising campaign. I wrote all the code for it: web, iOS and Android apps, and the backend API they share.

I grew up in São Paulo Brazil. Currently, I am studying at Brown University until May 2027, pursuing an MS in Entrepreneurship, and studying cybersecurity at Harvard University (cross-registered in person). Before Brown I was the first engineering hire at DAERO , a construction software startup in Boston backed by NFX . I spent ten months leading their iOS app dev, while also supporting the web, infra and backend work.

I got my B.Sc. in Computer Engineering at Insper. For my capstone, I worked on multi-cloud security monitoring for PinPagPinPag, a Brazilian payments company. Part of it was a Python tool that mapped how their AWS resources connected and flagged anything open to the internet that shouldn’t be. I was also on a team of four building rescue robots, for 2 years. We won a Best in Class award for sensing at RoboCup in 2022 Bangkok, Thailand, and mapping and autonomous navigation in 2023 Bordeaux, France. In 2023 I also became president of the university’s robotics club.

Email’s the easiest way to reach me: me@enriccogemha.dev

Enricco Gemha, in an OpenGiving T-shirt and a Behring Founders lanyard, demoing OpenGiving on his phone.

Things you can install

Work

OpenGiving

Live

May 2025 – Jun 2026

A marketplace where sellers route part of each sale to a fundraising campaign, running as a web app, an iOS app and an Android app on one API.

I wrote all four codebases, the web, iOS and Android apps and the API they share. On leave since June 2026.

  • FastAPI
  • PostgreSQL
  • Prisma
  • Next.js
  • SwiftUI
  • Kotlin / Compose
  • StripeStripe Connect
  • PayPal

Flags

Built, not released

2026

An iOS and watchOS app that puts a country flag on your watch face, built after a measurement spike proved the watch would actually render it in colour.

Sole author. 77 commits over four days.

  • Swift
  • SwiftUI
  • WidgetKit
  • watchOS
  • Fastlane
  • GitHub Actions

ZeroPunch

Live

Sep 2025 – Jul 2026

A field app for construction crews, built at DAERO , where I was the first engineering hire.

First engineering hire. Ten months on the iOS app, including a rewrite from scratch that I started in February 2026.

  • Swift
  • SwiftUI
  • GRDB
  • Go
  • OpenTelemetry
  • Grafana
  • AWS Lambda

Trophy Rooms

Live

2025 – 2026

A cross-platform game collection tracker over a reconciled catalogue of 28,784 titles spanning 42 platforms.

Sole author of the API, the web app and the iOS app.

  • TypeScript
  • GraphQL
  • Prisma
  • PostgreSQL
  • Next.js
  • SwiftUI

Earlier

  • PacBag An iOS app that tracks what’s in each bag and weighs it against the airline limit before you leave the house. 2025 Live
  • Cloud security at PinPag My engineering capstone: security monitoring for a Brazilian payments company operating under PCI-DSS and ISO 27001. Jul – Dec 2024 Archived
  • A Lua compiler that emits x86 Tokeniser, recursive-descent parser, symbol table and code generator, written in Swift, producing assembly that runs. 2024 Archived
  • RoboCup search and rescue Two generations of an autonomous search-and-rescue robot, which won Best in Class awards in 2022 and 2023. 2022 – 2023 Archived
  • AWS DeepRacer A reinforcement learning model for autonomous racing that placed 13th of 5,200 submissions. 2022 Archived