CORVX
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Banking & BFSI
Empowering a Regional Bank's Digital Future
What if your legacy infrastructure became the foundation for your next decade of growth?
Project Overview
Corvx delivered a full-scale digital transformation for a prominent Southeast Asian bank, migrating a decade-old monolithic core banking system to a modern microservices architecture—without a single minute of unplanned downtime. The engagement spanned 14 months and touched every layer of the technology stack, from database sharding to customer-facing mobile APIs.
About The Client
The client is a well-established retail and commercial bank serving over 2 million customers across 120+ branches. Despite decades of trust and market presence, their legacy infrastructure—built on a tightly coupled monolith—was buckling under the weight of digital-first customer expectations. Transaction failures during peak hours were becoming routine, and onboarding a single new product took months of developer effort.
The Challenges
What stood in the way
01
Monolithic Architecture at Breaking Point
A single codebase handled everything from account management to loan origination. Any change risked cascading failures, and deployments required full weekend maintenance windows.
02
Regulatory Compliance Gaps
New central bank regulations around real-time fraud reporting and data residency required architectural changes the existing system could not support without a complete overhaul.
03
Customer Experience Erosion
Mobile banking adoption was growing 40% year-over-year, but the app was slow, crash-prone, and lacked features competitors already offered—like instant transfers and biometric login.
Our Solutions
How we solved it
Microservices Migration with Zero Downtime
We decomposed the monolith into 26 bounded-context microservices using a strangler-fig pattern, allowing old and new systems to coexist during migration. Each service was containerized with Docker and orchestrated via Kubernetes.
Real-Time Fraud Detection Pipeline
We built a streaming analytics engine using Apache Kafka and custom ML models that process 50,000+ transactions per second, flagging anomalies in under 200 milliseconds—well within regulatory thresholds.
Mobile Banking Rebuild
A ground-up rebuild of the mobile app on React Native with biometric authentication, instant P2P transfers, and push-based transaction alerts. Load times dropped from 8 seconds to under 1.5 seconds.
The Results
The bank's digital transformation was completed on schedule and under budget. Within six months of launch, digital transaction volume doubled and customer complaints related to app performance dropped by 87%.
99.99%
Uptime During Migration
50K+
Transactions/Sec Processed
87%
Drop in App-Related Complaints
2x
Digital Transaction Volume
Technical Overview
Built with
Cloud & Infrastructure
- AWS (EKS, RDS, S3)
- Kubernetes
- Docker
- Terraform
Backend
- Java (Spring Boot)
- Node.js
- Apache Kafka
- Redis
Frontend & Mobile
- React Native
- TypeScript
- GraphQL
Data & AI
- Apache Spark
- TensorFlow
- PostgreSQL
- Elasticsearch
Our Approach
Phased Migration Strategy
Phase 1: Discovery & Audit
6 weeksComprehensive 50-point system audit, dependency mapping, and risk assessment across all banking modules.
Phase 2: Foundation Build
3 monthsCore infrastructure setup—Kubernetes clusters, CI/CD pipelines, API gateway, and service mesh configuration.
Phase 3: Incremental Migration
6 monthsService-by-service migration using strangler-fig pattern. Payments migrated first, then accounts, then lending.
Phase 4: Launch & Optimization
3 monthsFull cutover, performance tuning, load testing at 3x peak capacity, and post-launch monitoring.
Core Capabilities
What we brought to the table
Engineering
Microservices architecture migration with zero downtime during peak transaction periods.
Security & Compliance
Fraud detection algorithms processing 50K+ transactions/sec with sub-200ms response times.
Data Engineering
Real-time analytics pipelines for actionable financial insights and regulatory reporting.
The Methodology
The Corvx Audit
Our proprietary 50-point system analysis identified 14 critical bottlenecks before they impacted customers, enabling a phased rollout that reduced migration risk by 90% compared to big-bang approaches.
“
We don't just patch code; we re-engineer the nervous system of your business. This bank went from dreading peak hours to welcoming them.— Corvx Strategy Team
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