Foundational building blocks for transactional applications
summary
Presto is an open-source PureScript framework that turns transactional workflows into near-mathematical equations so product folks and freshers can read and edit business logic; it runs the systems that process about 30 million transactions per day and powers a payments SDK with 1.3 billion+ installs. Engineering built a cross‑platform 35 KB DUI SDK, contributed an UPI bmap and a Beckon-based mobility app called Atlas, and now plans an open-core, Rust-based financial switch to unify payment rails and reduce runtime surprises.
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chapters (9)
- 0:00Introduction
- 1:14Fintech evolution
- 3:00Jasper’s open systems journey
- 6:06Functional programming for apps
- 8:14Scaling payments with UPI SDK
- 9:59Open systems contributions
- 12:26Future bets with open core
- 15:14Design principles for products
- 15:35Q&A
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28mOrchestrating payments for the millions
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