Qombo launches bank‑grade verification at 3,000+ RPS with Upsun

Qombo, a Paris-based fintech specializing in IBAN and beneficiary-name verification for banks and payment providers across the EU, successfully launched a bank-grade verification API capable of handling over 3,000 requests per second without downtime, relying on Upsun for platform management. Operating with a lean team of two founders, Qombo prioritized bank-grade reliability, compliance, and EU sovereignty, choosing a Node.js API, a Next.js web app, and a data stack including MongoDB and PostgreSQL for operational simplicity. Upsun's EU-hosted platform offered compliance, automated scaling, and no-ops management, enabling Qombo to focus on product development rather than infrastructure challenges. This approach allowed Qombo to meet stringent regulatory demands, maintain a high level of reliability, and enhance credibility with banking partners, all while avoiding the need for DevOps hires. By leveraging Upsun's platform, Qombo plans to expand its coverage across more European banks, demonstrating that a small team can achieve significant scalability and agility in a highly regulated fintech environment.