Surrey Street Partners is the independent practice of Vina McAllister — a product executive with 15+ years building platforms at Twilio, PayPal, Amazon, Atlassian, and Zillow Group. Engages as fractional or interim VP of Product, embedded deeply rather than advising from the outside.
Authorization models, billing architecture, multi-party transaction flows, PLG-to-enterprise commercial transitions. Built the headless commerce platform strategy at Twilio and led payment optimization at PayPal.
Software eating industries where the offline complexity is the product. Real estate transactions, lending workflows, last-mile operations. Ran product at dotloop post-Zillow acquisition.
Defining what AI actually changes about your product. Not adding a chatbot, but rethinking the workflow, the data model, and the commercial structure underneath it.
Companies that need VP-level product leadership without a full-time hire.
Where the product function needs to mature quickly post-acquisition.
Building net-new AI or commerce infrastructure products inside larger organizations.
I take on one or two clients at a time and go deep. This is not a retainer-for-advice arrangement.
Typical engagements run 3–6 months with a defined scope. Straightforward about fit and honest when I'm not the right person for the problem.
A product executive who has shipped at scale — Prime Now at Amazon, payment infrastructure at PayPal, developer platforms at Twilio.
Not a consultant's. I write specs, run discovery, and make decisions alongside your team.
Of what's working and what isn't, without the diplomatic softening.
If you're working on a hard problem in payments, commerce, AI infrastructure, or physical workflow digitization — and you need a senior product partner, not a deck — I'd like to hear about it.
[email protected]