“Can Flex become the all-in-one financial operating system for mid-market business owners — managing revenue, spend, credit, and treasury — without requiring an in-house finance team?”
Founded in 2022 after pivoting from Flexbase Technologies, a construction-focused platform, Flex repositioned as an all-in-one finance platform for mid-market business owners lacking in-house finance teams. The company came out of stealth in 2023 with a business credit card and expense tracking, then rapidly expanded into bill payments, private credit, and treasury optimization. By late 2025, Flex had crossed $1B in transaction volume and raised a $60M Series B, positioning itself as the financial OS for business owners — managing everything from revenue generation to personal spending.