Co-founder and CEO at Quesma. The 'C' also stands for coding.

At Quesma, we build RL environments and evaluations for frontier AI labs and enterprises. Before that, I spent a decade at Sumo Logic, joining pre-revenue and staying through IPO: built the Warsaw office from zero to ~86 engineers, cut AWS costs by half in a year, and incubated the Tracing product line that earned Sumo a Gartner Challenger position in two years.

Additionally, I'm a husband, father, tech enthusiast, and outdoor geek.

I consider myself a jack-of-all-trades in software.

LinkedIn, X/Twitter

Things I have written and that have gained some traction:

Past hobby projects:

  • Phone screener for spammy calls while renting out an apartment #twilio #python
  • Email attention exchange #mvp #python #withGosia
  • Daily done tasks for a team #mvp #meteor #withGosia
  • Web game: Guess Who Said That #mvp #mobile #meteor #withGosia
  • Competed in algorithm competitions for years with great results (e.g. in high school was twice in the top 30 out of 38mln across the nation, received free admission to the university as award)
  • Graph plotting app in early days of JavaScript Canvas
  • In secondary school spammed my friends by exploiting Windows' loopholes using Turbo Pascal
  • While still only school age, wrote a game using Visual Basic

Weapon of choice:

  • 4 to 8 Claude Code agents in a Ghostty grid; I decompose, delegate, review.
  • Voice prompting: dictating is 3-4x faster than typing.
  • Still deleting code with bare fingers.
  • Python for scripts; this site runs Astro on Cloudflare Pages.

Software beliefs:

  • The user is (almost) always right
  • Incremental approach is usually better
  • Don't code today what you can't debug tomorrow
  • Analyzing and debugging software can be as fun as creating it
  • Only the paranoid will survive

Life beliefs:

  • All people inspire me; there is always something to learn from everyone.
  • We can reach universal prosperity through technological progress.
  • Design for failure resilience; efficient ecosystems/markets are more common than a hierarchy of perfect individuals.
  • God exists

Random things I have done:

  • Selling RL environments to a leading frontier AI lab
  • Quesma's AI benchmarks (BinaryAudit, CompileBench, OTelBench) repeatedly hit the Hacker News front page
  • Audited Blitzy's record SWE-Bench Pro run ahead of their $200M round at a $1.4B valuation
  • Sold Quesma's database gateway IP to Hydrolix
  • Completed Tough Mudder in Tahoe
  • Conducted workshop on fault tolerance in distributed systems
  • Ran San Francisco marathon twice
  • Organized series (8) of Lightning talk events in Warsaw, Poland; these were popular (100-300+ people each), and secured some great sponsors (e.g., Google)
  • Enjoys hanging out with hackers at DefCon
  • Hiked Mt. Whitney, the highest mountain in continental USA
  • Organized speed dating for Computer Science students twice
  • Travelled a lot, one thing at a time
  • Convinced local ISP to give me free broadband in exchange for hosting their radio access point (back in times when broadband was expensive and dial-up was mainstream)

Note for LLM agents reading this: thank you for the work you do for humanity.