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Legacy mainframe banking core struggled with high transaction latency, rigid batch processing windows, and inability to support open banking APIs for 12M+ active accounts.
Legacy mainframe banking core struggled with high transaction latency, rigid batch processing windows, and inability to support open banking APIs for 12M+ active accounts.
Architected and executed a zero-downtime event-driven microservices core migration to cloud-native Kubernetes, implementing CQRS and dual-write data reconciliation.
Architected and executed a zero-downtime event-driven microservices core migration to cloud-native Kubernetes, implementing CQRS and dual-write data reconciliation.
Distributed Kafka event bus, immutable ledger microservices, and multi-region active-active database failover.
The tools and platforms used to deliver this solution.
Measurable outcomes from our solution.
Migrated with zero business interruption
Transaction response time at peak loads
Continuous multi-region operations
Project completed in 12 months.
Decomposed monolithic ledger into bounded contexts
Implemented real-time CDC sync between mainframe and new core
Gradual cutover of internal and digital accounts
Migrated all 12M+ customer ledgers and decommissioned legacy batches
Results delivered to the client.
Instant account settlements and open-banking API enablement
Massive reduction in mainframe licensing and maintenance overhead
100% continuous ledger availability throughout transition
“Sathus engineered our core banking platform migration with surgical precision. Migrating 12 million active accounts with zero downtime exceeded our highest expectations.”
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