Hi, I'm Mario Gunawan.
A Software Engineer.
I build delightful web experiences — from interactive learning tools to fast, accessible portfolios.
About me
A bit about who I am
I'm a software engineer who loves crafting clean, performant web applications. I enjoy working across the stack — from designing intuitive interfaces to architecting reliable backends.
Outside of work, I tinker with side projects like trivia platforms and online learning tools. I believe great software should be useful, accessible, and a little bit delightful.
Tech I work with
Projects
Things I've been building
A selection of projects I've shipped, contributed to, or am actively working on.
Split
A Splitwise-like expense tracker built into this site. Create trips, add members, log bills, and instantly see who owes who.
Japanese Study Tool
A Japanese study tool: draw a character (or write it with an Apple Pencil), recognize it on-device, and look up its reading and meaning.
Investnote Bot
An investment helper I've built to scrape datas from idx disclosure, and blast out AGMS, change in holders composition, and other potentially price-changing news to discord groups
Let's work together
Got an idea, opportunity, or just want to say hi? My inbox is always open.