FinScale Global is a digital-first bank serving about 350,000 customers across North America. They offer checking, savings, and investment products with a focus on mobile-first user experience. However, they faced significant hurdles:
- Scalability limits: Legacy servers crashed during payday and monthly statement traffic spikes.
- High Latency: Transaction processing took >2s, leading to cart abandonment.
- Compliance Risks: Manual deployment processes made audit trails difficult to maintain.
Varcio re-architected the entire platform using a serverless microservices approach on AWS. We implemented:
- AWS Lambda & API Gateway: To decouple services and allow elastic scaling during traffic spikes.
- DynamoDB: For single-digit millisecond latency on transaction data.
- Cognito: For secure, banking-grade identity management.
- CI/CD Pipelines: Enabling the team to deploy updates 4x faster with automated compliance checks.
Transaction Latency (ms) - Before vs After
Analyzed legacy code and mapped dependencies.
Lift-and-shift of non-critical services to Docker.
Strangler pattern to replace monolith with Lambda functions.
Fine-tuning memory allocation and database indexes.
The migration was a massive success. The new architecture handled a record-breaking Black Friday with zero downtime. Operational costs dropped significantly as they no longer paid for idle servers. Most importantly, customer trust soared due to the app's newfound speed and reliability.
"Varcio didn't just move us to the cloud; they fundamentally reimagined how our bank operates. We are now faster, cheaper, and more secure."