Legacy Core Banking Migration to Cloud

Conducted a 4-week application portfolio assessment, classifying 120 applications by migration complexity and business criticality.

Designed a lift-and-shift strategy for non-critical applications and a re-architecture strategy for core banking services using microservices.

Implemented a parallel-run period of 8 weeks where both on-premise and cloud systems processed transactions simultaneously for validation.

Executed a zero-downtime cutover using blue-green deployment, switching traffic to the cloud environment during a low-activity Sunday night window.

Delivered a full CI/CD pipeline and infrastructure-as-code setup, enabling the bank's internal team to manage future deployments independently.