Show HN: We've spent the last year building a bank – Ask us Anything

calvinzheng.com

4 points·zbruhnke··5 comments

Hi All,

Co-Founder of Halleman Bradley here, Calvin came on as our design intern originally and we've talked him into staying with us for even longer, he made this write up about how we've iterated in building this product over the last year.

I'd be happy to answer questions about our process, the details behind how we're doing this or anything else you all might be interested in.

We realize the write-up is long but I think it is quite a good read.

I hope you'll find this interesting

did you build every banking software required or bought some and built only the services? I know some startups in Australia are building similar thing like yours. From what I know they buy software for core banking but provide additional services on top.

It's a mix, We're building all of our own customer facing software and many things behind the scenes as well.

For instance we integrate with providers for KYC/AML requirements and do not build that in house but for Billpay we are using a combination of APIs that connect directly to billers' sites and building our own tools to discover how to send ACH's or mail paper check when necessary

what about accounting and transactions, the core banking stuff?

We have built directly into the APIs of a core ledger provider than runs billions of dollars worth of banking cores. These were originally private APIs they were only using for their own apps and we're the first third party to ever access them.

That's been a really fascincating experience in and of itself actually

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