Article in the AFR today discussing Airwallex and its recent $US100m raise. (valuing it at $1b).
It was founded in 2015 (meets the 4 year operation clue) and is a cross-border payments company. It says it aims to head into the US, UK and south-east Asia (international expansion)
Airwallex has boasted customers inclusing Mastercard, JD.com and Tencent (top tier clients).
