Quantitative (Quant) trading is an industry where these firms pay techies to build proprietary trading software targeted at specific markets such as oil, fx, crypto etc. then they employ traders to trade with this software.
I have heard that junior traders earn a quant trading salary around $400k per annum and the bonuses are even higher. Some quant firms let traders keep 20% of any profits they generate.
To get a quant trading job, you have to be good in math, computer science, coding etc. plus having experience in building software for other industries could be an added advantage.
A friend of mine was able to get into one of the quant firms in Chicago (as a junior trader) because he accepted to work the midnight shift when European markets would be open.
Some of you may have heard about Kairan Quazi the 16-year-old who just moved from Space-X to a quant firm called Citadel Securities. read more here https://africa.businessinsider.com/news/he-joined-spacex-at-14-at-16-teen-prodigy-kairan-quazi-is-jumping-to-quant-trading/zxbzn7c