Oskar Szulc Product Engineer

Now

Working on the AI side of workforce planning at Dayforce. Before that I was a founding engineer at Agentnoon, from before product-market fit through its acquisition in 2025. The work I like best is where a hard technical constraint meets an interface someone has to enjoy using. I learned to build by making games.

Based in

Toronto

Role

Principal Product Engineer, Dayforce

Before

Agentnoon (YC W22), refurbed, game studios

Writing

• Building periscopeAn agentic headless browser for macOS.Oct 2026
• Building rasterMy story of grid sequencer obsession.Sep 2026
• Game dev techniques for a 20× faster web appCulling, spatial partitioning and workers in a Vue app.Apr 2026
• A 240k-record org chart in a browserTwo years of replacing Vue components with a small renderer.Apr 2026
• How I use coding assistantsPoint at files, plan first, pin it down with tests.Nov 2025
• Early startup engineeringWhat worked for a small team at Agentnoon.Nov 2025
• Why not rewrite?My answer to a new engineer who wanted to start over.Nov 2025

More

There’s a longer about page with the full history, and every post in one place, including older notes on git and Unity WebGL. Code is on GitHub, and I’m on LinkedIn.