I started with js and php. Moved to Java. Then node. Then php again. Then Go. Then Kotlin. Then TS. Then Python. Then Go again. In between a bunch of sql, html, css, and many different tools, libraries and frameworks. The most important things Ive learned are around architecture/databases/distributed-systems, tho.

I don’t think i could have survived in this industry if I knew only 1 or 2 “stacks”.