Banking-as-a-Service platform

The platform faced slow release cycles due to technical debt, growing compliance demands, and the need to scale for 24/7 availability. At the same time, the client had to expand development capacity without disrupting live banking operations.

• Java backend development: Built a high-performance banking core system capable of processing 550,000+ concurrent requests in production with zero-downtime deployment. Covered core modules such as payments, transfers, ACH origination, and Reg CC check processing.
• Full-stack web development: Delivered responsive web applications using modern JavaScript frameworks — including customer-facing portals for onboarding and account management, and corporate dashboards for transaction monitoring and approvals.
• Mobile development: Developed native iOS and Android apps with secure authentication, mobile deposits, transaction flows, and personalized account features for end-users.
• DevOps & infrastructure: Set up Kubernetes clusters (OpenShift / AWS EKS) with automated CI/CD pipelines and 24/7 monitoring. Supported reliable delivery of compliance-critical modules such as sanctions screening, fraud detection, and reporting services.
• API development & integration: Designed RESTful and event-driven microservices to connect with payment processors, sanctions and fraud detection engine, and regulatory reporting system.
• Database optimization: Engineered PostgreSQL with Redis caching to sustain real-time balances and high-volume transaction processing across accounts and ledgers.
• Security implementation: Applied PCI DSS-compliant controls and multi-factor authentication to protect account access, while embedding sanctions screening into the transaction approval flow.
• Regulatory automation: Automated workflows for ACH returns, Reg CC holds and staged fund releases, and tax reporting to ensure compliance with banking standards from the ground up.