# Surrey Street Partners

**Independent thinking, operational ingenuity, unyielding integrity.**

Surrey Street Partners is a senior product practice that helps companies build and ship production systems in payments, open banking, capital markets, commerce, and AI. Two principals. 30+ combined years. Embedded delivery, not advisory decks.

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## We build what others advise on

We embed with your team and build production systems — not decks. Our combined work spans payments and headless commerce at Twilio and PayPal, open banking platforms at Wells Fargo (1.5B+ API calls, CFPB 1033), capital markets infrastructure across E*TRADE, Schwab, and CBOE, and AI product strategy for native and incumbent operators alike.

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## Our approach: hands-on delivery

Two principals with deep operating experience — building alongside your engineers, not above them.

### Process

| Phase | What we do |
|-------|------------|
| **Discover** | Understand your business, your stack, and the constraint that matters most — without selling a methodology. |
| **Architect** | Design systems that work in production, not just on whiteboards. Every architecture decision maps to a business outcome. |
| **Build** | Write code, ship prototypes, stand up infrastructure. Embedded with your team, in your repos, on your timelines. |
| **Validate** | Every deliverable is tested against real users and real data. We don't hand off until it works — and you can prove it works. |

### Practice areas

| Domain | Focus |
|--------|-------|
| **Payments & Commerce** | Authorization models, headless commerce, multi-party transactions, vault architecture, SMS payments infrastructure. |
| **Open Banking & Data** | Financial data API platforms, CFPB 1033 compliance, consumer-permissioned data, fintech partnerships. |
| **Capital Markets** | Derivatives and futures trading platforms, market data systems, institutional product strategy. |
| **AI Product Strategy** | Production agentic workflows, ML-driven personalization, alternative data, AI-native product strategy. |

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## Team

### Vevina McAllister — Founder & Principal

Product executive with 15+ years building platforms at the intersection of commerce, payments, and developer infrastructure. Twilio, PayPal/Braintree, Amazon, Atlassian, Zillow Group.

[LinkedIn](https://www.linkedin.com/in/vmmcallister/)

### Amy Hoffman — Principal

Fintech platform executive with 15+ years building open banking, financial data, and trading infrastructure. Wells Fargo Open Banking (1.5B+ API calls, CFPB 1033), Dow Jones, Charles Schwab, E*TRADE, Market Compass / CBOE. FINRA Series 3, 7, and 63. Co-author of *Fundamentals of the Options Market* (McGraw-Hill).

[LinkedIn](https://www.linkedin.com/in/amyshoffman/) · [Read full bios](https://surreystreet.ai/team/)

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## Let's build something

We take on a small number of engagements at a time. If you're working on a hard problem in payments, open banking, capital markets, commerce, or AI — let's talk.

- Email: [vevina@surreystreet.ai](mailto:vevina@surreystreet.ai)
- LinkedIn: [vmmcallister](https://www.linkedin.com/in/vmmcallister/)
- Website: [surreystreet.ai](https://surreystreet.ai)

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© 2026 Surrey Street Partners, LLC