The client, a major bank, needed to enhance its existing live biometric payment system for retail and metro services. The core challenge was twofold: to ensure the platform's stability and security under increasing load while simultaneously driving its evolution. This involved integrating with new large-scale partners like a metro's facial recognition system and the national payment infrastructure, and developing new features — regaining control of user onboarding by migrating all users from a third-party service and implementing a direct account linking feature within the bank's own application

We provided comprehensive backend support and development for the entire biometric payment ecosystem. This included maintaining and optimizing the core platform, integrating it with critical external systems like the national payment network, the facial recognition system, and anti-fraud services. We also developed new functionality, such as a proprietary digital signature service to replace a third-party provider and implemented new transaction flows and security features to expand the system's capabilities and ensure its robust, secure operation

Our work transformed the biometric payment system's stability, efficiency, and strategic control. By developing a robust, proprietary digital signature service to replace an unreliable third-party vendor, we eliminated frequent outages that had disrupted every payment and registration, secured flawless system uptime, and cut associated licensing costs by approximately 30% annually. This foundational stability, combined with key integrations like the national payment infrastructure (NSPK) and the metro's facial recognition system, ensured the high availability and security required to process millions of transactions. These enhancements, alongside new user-centric features, fueled a 35% increase in new user registrations and drove steady growth in transaction volume over the year