Rewiring Fintech: How Knot Is Transforming Financial Connectivity

Most people only see the front end of fintech. The app. The card. The payment. But underneath that experience is an enormous amount of infrastructure and some of fintech’s biggest opportunities are hiding there.

Rory O’Reilly, cofounder and CEO of Knot, joined me on the pod to talk about how Knot is rewiring fintech and transforming financial connectivity.

We dive into:

Why keeping a card “top of wallet” is harder than it sounds.
The infrastructure required to connect financial institutions with thousands of merchants.
Why security and compliance are foundational, not afterthoughts, in fintech.
Where blockchain and stablecoins could fit into the financial stack.
Rory’s unconventional path from selling shoes with his family to building fintech companies with his brother.

What I particularly enjoyed about this conversation is that Knot is tackling a problem most consumers don't even realize exists. The biggest innovations in fintech may not be the products we see, they may be the infrastructure quietly making everything work.

🎙️ Listen to the full conversation with Rory O’Reilly here:

⏱️ Chapter Markers:

01:12 — What Knot does: card-on-file updates, top-of-wallet

04:08 — The consumer pain: lost/expired cards and sticky subscriptions

06:20 — Why issuers/fintechs care: interchange and activation

09:05 — Go-to-market: selling to issuers; merchant API approach; 100M calls

12:44 — Security/compliance first: fractional CISO Brian Costello (ex-Yodlee)

16:18 — The fintech iceberg: why infra disruption is a long game

19:45 — Blockchain at the gate: stablecoins, Cash App's Lightning, backend use cases

24:58 — Founder origins: family hustle and resilience

30:36 — Harvard, Thiel Fellowship, gifs.com virality

35:52 — ICOs, ETH windfall and crash, and hard lessons

41:07 — Building with his brother: roles, trust, zero drama

45:30 — Closing takeaways

LINKS

Rory O'Reilly: LinkedIn, X
Knot: Website, LinkedIn, X
Interplay: Website, LinkedIn, X
MPD: LinkedIn, X

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