You will have a hard time doing expert level stuff on things which are cool like latency and performance. I'm trying to find a real job like this for ages. Ex

You will have a hard time doing expert level stuff on things which are cool like latency and performance. I'm trying to find a real job like this for ages. Expert in business things business need like sap systems is highly sought after and payed well. Best case you are broad and an expert on 2-3 things.