Hi, I'm Sem

Freelance full-stack developer from the Netherlands 🇳🇱. I build web apps, backends, and native iOS apps, mostly in Go, TypeScript, Swift, and Python. My portfolio lives at kriyak.com.

Things I've built

• logic-nodes: a free online logic gate simulator with a hand-written canvas editor, truth tables, and boolean expression synthesis
• Sonitus: noise-control like native, for non-Apple headphones
• go-catdoc: read legacy .doc files in pure Go, by running catdoc as WebAssembly (no cgo)
• esphome-crowpanel-4.2-epaper: ESPHome support for the CrowPanel 4.2" e-paper display
• Readleap: a reading tracker for iPhone, shipped to the App Store

Writing

Occasionally I write about the engineering behind these on my blog:

• What I learned hand-writing a canvas node editor in TypeScript
• Parsing 1990s Word documents in Go by running C inside WebAssembly

Contact

Available for freelance work, in the Netherlands and worldwide: kriyak.com/contact, or email gh-contact@kriyak.com. I'm also on Twitter.

⚡ Fun fact: I like programming