Fintech
Mission-critical financial infrastructure: banking-grade core ledgers, real-time transaction reconciliation, high-throughput payment pipelines, and multi-jurisdiction compliance.
Key Engineering Challenges We Solve
- 01
Zero-Downtime Ledger Migration
Migrating legacy COBOL and core banking mainframes to event-sourced PostgreSQL with dual-write reconciliation and zero customer disruption.
- 02
Idempotency & Financial Consistency
Guaranteeing exactly-once execution across distributed payment gateways and ledger state machines, preventing double-charges under network partitions.
- 03
Multi-Region Data Sovereignty & PCI-DSS
Isolating cardholder and customer PII within national regulatory boundaries while maintaining unified global reporting and analytics planes.
- 04
Sub-Second Fraud Detection & Auditability
Streaming transaction evaluation against ML rule engines with immutable audit logs, sub-second latency, and cryptographic non-repudiation.
Case Studies & Selected Work
Atlas Banking — core ledger migration
Greenfield core ledger migration for a regional retail bank. PostgreSQL + event sourcing.
Build with DAYLOO
Direct technical discussion with senior architects. No sales gatekeeping.