zhan beissikeyev.

i build products from problems i know firsthand.

five years in mental arithmetic — ending as a republican champion — became mindzan.com. i built it in three weeks, sold it to FOC for $10K, and now scale it as CTO of FOC World.

coding since 8th grade: bfinance.app, nFactorial, crypto payments, Telegram Mini Apps, AI monitoring, and the failed startups that made the next one sharper.