Proof, the leading identity authorization network, today announced that Ian Macallister has joined the company as EVP of Strategy and Business Development. Macallister brings decades of experience bringing together legacy financial systems and emerging fintech to support Proof’s mission of embedding high-assurance, legally verifiable identity across the financial ecosystem.
Macallister most recently served in senior leadership roles at Plaid, Unit21, and Early Warning (Zelle), where he spearheaded partnerships and product strategy at the intersection of identity, risk, and payments.
“Ian has earned the trust of some of the most risk-averse and influential players in the financial industry,” said Pat Kinsel, CEO of Proof. “His credibility and experience navigating complex payments and compliance challenges to create new revenue streams and scale emerging technologies make him a huge asset to Proof and our partners.”
At Early Warning, Macallister was instrumental in scaling Zelle, coordinating banks, card networks, and core processors to drive mainstream adoption of real-time payments. At Plaid, Ian played a critical role in moving the industry from screen scraping toward secure APIs and helping banks align with next-generation financial technology.
“I’ve spent my career collaborating with and within banks and fintechs to bridge gaps in identity, risk, and payment infrastructure. What drew me to Proof is their ability to not only verify identity, but to anchor it to high-value transactions in a way that’s reusable, privacy-conscious, and fraud-resistant,” said Macallister. “This is what the industry has needed for years: a trusted partner that enables any company, banks, networks, healthcare, and more, to securely share identity and fraud signals without compromising their relationships with their consumers.”
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