Charge card startup Brex aims for decacorn success

By now, Brex, the young startup that is trying to reinvent corporate credit and charge cards, is well-known in Silicon Valley. The tender age of the company’s co-founders, Henrique Dubugras and Pedro Franceschi, the big-name backers, the $125 million Series C announced last month, the aggressive billboard advertising in San Francisco and the company’s torrid growth have all contributed to the swirl of attention. But, of course, it was the valuation at the last round — which placed Brex into the fintech unicorn club — that tops the list.

Recently, Brex offered up a new reason for chatter as it unveiled its new, generous rewards program that was purpose-built for the kind of entrepreneurs who aspire to match Brex’s success. But lost in the buzz are the specifics of how Dubugras and Franceschi have approached the arcane challenge of building a payments startup.