Zai (formerly Assembly Payments, formerly PromisePay of which the latter fintech startup incubated in St. Louis), is now based in Melborne, Australia.

In their own words:

“Zai is boldly transforming the future of financial services and powering our customers by making innovative financial services accessible to all. Our payment APIs help businesses manage multiple payment workflows and move funds, so they can pay and get paid without delays. We apply our real-time expertise to a reliable micro-service architecture to enable authentication, liquidity, payment and settlement with zero wait-times. We have over 170 employees, growing to 450 by 2025, and are expanding our presence across APAC, UK, USA and the Middle-East.”

For more information, visit Zai or follow their updates on:


  • $32.3m

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