Reading this, I am curious about the systems you've dealt with? If you are talking the back end basically being crud apps, sure, but most services, the bulk of the work is behind the scenese (rest apiece, etc)
outside the rest api, mostly crawling 3rd party apis, basic map-reduce aggregations, data sanity checks, the occasional s3 dump. No fancy distributed systems or machine learning stuff everyone else seems to be doing. How about yourself?