Karkal became “frustrated” though at handling the incredible bureaucracy that comes with working within a large, 150-year-old-plus banking institution, saying that “you could integrate into the sandbox in a couple of weeks, [and] it would only take you a couple of years to get through risk compliance, legal, and everything else internal.” So he finally headed back out on his own in late 2017 to explore where fintech was headed next.

https://techcrunch.com/2020/04/08/programmable-fintech-payments-startup-sila-raises-7-7m-seed-to-wipe-out-ach/