Fintech Founder Shares Hard Lessons from Building a Compliance-First Banking MVP

Andrew, solo founder of Y-tech Bank, built a fintech MVP using React Native, AWS, PostgreSQL, and event-driven architecture, and documented key lessons that standard SaaS startup advice overlooks. He found that compliance requirements — including KYC/AML, GDPR, and PSD2 — must be factored into architecture from the very beginning, not added later during licensing. Unlike typical SaaS products, a fintech MVP must also satisfy security reviews, handle edge cases with real financial consequences, and maintain immutable audit logs. Andrew noted he nearly prioritised building the AI business suite, NeuroOffice, before proving core banking flows, calling the decision to reverse that order critical to building a trustworthy product. The current MVP demonstrates working registration, virtual transfers, and card management flows, but live banking infrastructure awaits formal licensing and funding.