A traditional bank with decades of legacy infrastructure was struggling to compete with nimble fintech startups. Their monolithic core banking system couldn't scale to meet growing customer demands.
CodeSwift partnered with them to modernize their infrastructure, migrating critical systems to the cloud while ensuring zero downtime for customers.
The existing system was built on aging mainframe technology with limited documentation. Any changes required extensive testing and carried significant risk of service disruption.
The bank needed to maintain regulatory compliance throughout the migration while training staff on new technologies and processes.
We implemented a strangler fig pattern, gradually replacing legacy components with modern microservices. This approach minimized risk by allowing the old and new systems to run in parallel.
Cloud-native technologies including containerization and managed databases provided the scalability needed for future growth.
Migration occurred in waves over 18 months, prioritizing high-impact, lower-risk components first. Each wave included thorough testing, staff training, and gradual traffic shifting.
We established a cloud center of excellence within the bank to ensure long-term success and knowledge transfer.
The modernized platform achieved 10x improvement in scalability and reduced infrastructure costs by 45%. System reliability improved from 99.5% to 99.99% uptime.
The bank can now deploy new features weekly instead of quarterly, dramatically improving their competitive position.
Cloud: AWS (EKS, RDS, Lambda, S3)
Backend: Node.js, Go, gRPC
Database: PostgreSQL, DynamoDB, Redis
DevOps: Terraform, GitHub Actions, ArgoCD
Observability: Datadog, AWS CloudWatch
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