Rena Zhao

Algorithm Engineer & Technical Writer at X-Engagement

Ranking systems engineer who spent 3 years building recommendation algorithms at a social platform before going indie. Dug through every line of Twitter's open-sourced heavy ranker code so you don't have to. Writes about engagement signals, feed mechanics, and what actually moves the needle in algorithmic distribution. If it's not in the source code, I don't trust it.

Articles by Rena Zhao