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I build the mobile layer where money moves and where sessions get replayed. Payment SDKs, Flutter apps, and the tooling around them — by day as a Senior Mobile Engineer on Session Replay at Contentsquare, the rest of the time as small apps for my family.
Unofficial Mercado Pago checkout SDK for Flutter. The one I'm most known for: it lets a Flutter app take payments without dropping into native code on each platform.
★ 49 · Dart · repo
Personal — and then whole-family — expense tracker. Born as a way to see where the month went, it's now the app my house runs on.
★ 52 · Dart · repo
| Project | What it does | Stack | Stars |
|---|---|---|---|
| ualabis-dart | Ualá checkout SDK for Dart | Dart | — |
| tmi.dart | Dart client for the Twitch Messaging Interface | Dart | ★ 9 |
| czat | Twitch chat built for live events | Flutter | ★ 4 |
| loop-o-matic | Agent-AI loop orchestrator — written while learning Go | Go | — |
Dart Flutter Kotlin Jetpack Compose Kotlin Multiplatform Java Ruby Rails TypeScript Go (learning) Linux Neovim
@AndroideDelValle on YouTube · gazer.github.io · Stack Overflow
Ask me about mobile development, Flutter, Kotlin Multiplatform or mobile payments — ricardo.markiewicz@gmail.com