These two -

1) The boring technology behind a one-person Internet company (2018) - https://news.ycombinator.com/item?id=20985875 (Not posted by myself :)

2) Podcast API - https://news.ycombinator.com/item?id=25139833

I've been on Hacker News for over a decade. It's hacker news that made me decide to go down the join-a-startup path & later the start-my-own-company path, rather than the work-for-FAANG path (like what most of my graduate school classmates did back in 2010~2012).

I was inspired by posts like https://news.ycombinator.com/item?id=8863