Embedded Finance & BaaS Development

Reference architecture

1. Your Application
2. Embedded Finance API Layer
3. Internal Ledger
4. BaaS Partner (Unit / Treasury Prime)
5. Sponsor Bank of Record
6. Webhook Reconciliation
7. Audit Log

A typical embedded-finance stack: your application calls an API layer that writes to an internal double-entry ledger and forwards money-movement to the BaaS partner, which settles at the sponsor bank of record; partner webhooks reconcile state back against your ledger, and every transition is written to an immutable audit log.

Frequently asked questions

• Do you work directly with BaaS partners like Unit or Treasury Prime?+

  Yes. Unit, Treasury Prime, Synctera, Solid, and Bond are all partners we’ve integrated or evaluated. We build the application and ledger layer on top of their APIs, handle sandbox-to-production promotion, and know where each partner’s KYC and money-movement flows need extending for your use case. The banking relationship and program approval stay between you and the partner; we handle the engineering side of that relationship.

• Do I need my own banking license?+

  No. That’s the point of embedded finance. The licensed activity lives with the sponsor bank and BaaS partner who hold the charter and permissions. We build your application layer to their operating rules so you ship a banking-like product without becoming a bank. If you later move toward a direct bank partnership or license, we design the architecture to survive that transition rather than trap you.

• How do you keep the ledger accurate against the partner?+

  We run an internal double-entry ledger as the source of truth for your application, and reconcile it continuously against partner webhooks and statement data. Every money movement is idempotent, every state transition is a balanced entry, and mismatches surface as reconciliation exceptions for review rather than silent drift, so your books tie out to the penny against the partner bank.

• Can you build card issuing on Galileo or Marqeta?+

  Yes, both. We ship virtual and physical card issuing, spend controls, just-in-time funding decisions, tokenisation for Apple Pay and Google Pay, and the full set of card-lifecycle webhooks. If you run a different processor with an API, we’ll wire it into the ledger and program-management flow the same way.

• What happens if we need to switch BaaS partners later?+

  Partner concentration is a real risk in embedded finance, so we architect for portability: money-movement and account logic sit behind an internal abstraction, the ledger is partner-agnostic, and partner-specific code is isolated at the edge. That doesn’t make a migration free, but it means switching or adding a second partner is a scoped project, not a rewrite of your whole platform.