Fintech Buy-Now-Pay-Later AWS Platform
Architected and deployed a highly secure, transaction-heavy PCI-DSS compliant Buy-Now-Pay-Later (BNPL) fintech platform on AWS Fargate and Aurora, handling millions of active API requests.
The Problem
Operating a high-scale transactional fintech platform required strict PCI-DSS compliance, sub-50ms database operations, and multi-tenant security structures to protect sensitive financial records.
The Challenge
- Ensuring strict isolation of tenant banking profiles and payment records.
- Achieving sub-50ms database write latencies for real-time transaction processing.
- Configuring secure, encrypted credentials and key rotation structures to satisfy external auditing bodies.
Our Solution
- Deployed containerized microservices on AWS ECS Fargate in highly private networks with dedicated security groups.
- Provisioned Amazon Aurora PostgreSQL clusters with multi-AZ replication, optimizing query indexing and session scaling.
- Integrated AWS KMS keys with automated annual rotation for envelope encryption of all transactional databases.
Key Results
100% Auditing Success
Achieved seamless compliance with zero critical findings on PCI-DSS external security evaluations.
Transaction Scalability
Sustained thousands of concurrent transactions with sub-50ms API request responses.
Full Envelope Encryption
Safeguarded 100% of consumer profiles and financial histories with KMS-backed encryption keys.
Outcome
Built a production-grade AWS ECS Fargate environment that satisfied 100% of PCI-DSS compliance audits, integrated Aurora PostgreSQL replicas for high read performance, and utilized KMS keys for envelope encryption.
Tech Stack
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