The best tech stack I have ever worked on was in an adtech company. The code was beautiful and the utility functions to interface with various AWS services were really really neat. I built a near real time estimator using Theta Sketches.

While job searching, I have tried to use techs like Sketches in my filters but it mostly draws up a blank. Would love to work on genuinely interesting stuff like that again.

It honestly did leave a bad taste in my mouth whenever I thought what the end goal of it all was.