I've been involved in writing code for decades, having cycled through careers as a sysadmin (on a PDP 11/70 running UNIX), a systems analyst, a professor, a CTO, a chief architect, a CIO... and coding throughout. My most productive sprint was 250,000 lines of code (possibly accompanied by a beer or two) in four months. My current principal languages are Go, Typescript and Python. I'm also one of the inventors of Latent Semantic Indexing.