Tuum
“Can a cloud-native, modular core banking platform become the default infrastructure layer for banks and BaaS providers across Europe?”
Tuum (operating as Modular Technologies OÜ) was built from inception as a cloud-native, API-first, microservices-based core banking platform — a direct competitor to legacy core banking vendors. Rather than building a fintech product itself, Tuum positioned as infrastructure: enabling banks, EMIs, and brands to rapidly launch accounts, payments, lending, and card programmes without replacing entire legacy stacks. Its marquee customer LHV Bank — which itself powers 200+ fintechs — validated Tuum's BaaS-infrastructure thesis. The company has expanded beyond a pure core banking play by pre-integrating with card issuers (Marqeta), open banking compliance (Salt Edge), and payment settlement rails (Currencycloud, Banking Circle, Centrolink, LHV).