In today’s financial landscape, scalability, security, and speed are non-negotiable for any fintech application. One of our clients, a growing fintech startup, was struggling with monolithic bottlenecks, performance issues, and scaling limitations.
They partnered with TechVraksh to rebuild their architecture with AWS-powered microservices — and the results were transformational. Here’s how we did it. 👇
🏦 The Challenge
The client operated a platform for real-time financial transactions and investment tracking. They faced:
-
Performance bottlenecks with a legacy monolithic backend
-
Long development cycles and downtime during updates
-
Difficult scaling during high-volume financial events
-
Security and compliance concerns due to growing data
🔍 Our Approach
We proposed breaking their architecture into microservices, hosted and scaled independently via AWS Cloud services.
🔧 Key Steps We Took:
1. Service Decomposition
We divided the monolith into key microservices:
-
Authentication & user management
-
Transactions & payments
-
Reporting & analytics
-
Notifications
-
KYC & document verification
2. Containerization with Docker + ECS
Each service was containerized using Docker, deployed on Amazon ECS (Elastic Container Service) for efficient orchestration and autoscaling.
3. Database Refactoring
Each microservice was assigned its own database using Amazon RDS and DynamoDB — ensuring isolation and better query performance.
4. API Gateway & Lambda Integration
For lightweight operations and scaling bursts, we used AWS API Gateway and AWS Lambda to handle high-traffic public APIs.
5. Security & Compliance
With IAM roles, VPC isolation, AWS WAF, and CloudTrail, we ensured their infrastructure met financial-grade security standards.
📈 Results We Delivered
✅ 3x improvement in application response time
✅ 99.99% uptime during load spikes
✅ 70% faster deployment cycles with independent CI/CD pipelines
✅ Compliance-ready infrastructure with audit logging and secure token management
✅ Seamless scaling during market surges without manual intervention
🧠 Key Learnings
-
Start small with microservices: You don’t have to break everything at once.
-
Infrastructure as Code (IaC) via CloudFormation or Terraform improves consistency.
-
Monitoring is critical: We used AWS CloudWatch, X-Ray, and Prometheus for observability.
💼 Final Thoughts
This engagement proved how cloud-native architecture + the right partner can unlock tremendous agility and scale for fintech apps.
At TechVraksh, we specialize in transforming legacy systems into modern, secure, and scalable microservices—especially for high-growth startups and regulated industries.
👉 Need to scale your product with cloud-native microservices?
Let’s architect it together. Get in touch
