Software Architecture & Design for Banking

Banking software architecture is one of the most consequential design challenges in technology. These systems process real money, protect sensitive financial data, and must remain available nearly 100% of the time. They are subject to examination by OCC, FDIC, Federal Reserve, and state regulators who will scrutinize your technology decisions. And they must evolve to meet competitive pressures from fintechs and digital banks while maintaining backward compatibility with decades of accumulated business logic.

Adapter helps banks and credit unions navigate this complexity. For institutions looking to modernize, we design incremental migration architectures that allow new digital capabilities to coexist with legacy core systems. This approach reduces risk by avoiding big-bang replacements and allows the institution to validate new components in production before committing to full migration. For institutions building new digital banking capabilities, we design API-driven architectures that connect digital channels to core banking systems while providing the flexibility to evolve the digital experience independently of core platform constraints.

Our banking architectures address the full spectrum of regulatory and operational requirements. This includes network segmentation and encryption architectures that satisfy OCC and FDIC IT examination standards, disaster recovery and business continuity designs that meet regulatory expectations for critical banking systems, vendor management architectures for cloud deployments that address third-party risk management guidance, and audit logging and data retention designs that support regulatory examination and legal discovery requirements. We also design for the organizational reality of banking, where changes to production systems require formal change management processes, multiple approval layers, and comprehensive testing protocols.