Enhanced real-time data streaming and database performance by tuning PostgreSQL and MongoDB (via AWS RDS) and integrating Apache Kafka — lowering latency by 40%, boosting throughput by 50%, and reliably managing over 10 TB of data daily.

Automated and secured cloud operations using AWS CloudFormation and IAM policies — streamlining resource provisioning and tightening compliance adherence by 20%.

Led agile development teams and implemented CI/CD pipelines with Docker, Kubernetes, and Jenkins — improving SDLC velocity and cutting project delivery times by 15% through enhanced team collaboration and deployment reliability.

Executed a smooth migration from IBM DB2 to DynamoDB with near-zero downtime — reducing operational overhead and improving data scalability and availability.

Engineered fraud screening algorithms for ACH transactions — enhancing fraud detection accuracy and reducing non-compliant transactions by 40%, increasing trust in financial operations.

Secured sensitive credentials migration from IDVault to AWS Secrets Manager — boosting system security by 30% and streamlining access management.

Built a robust caching layer and rule engine for Java microservices using AWS Lambda and S3 — cutting transaction latency by 30% and enabling real-time validation for 1.5M+ transactions/month.

Championed end-to-end testing with TDD, using JUnit and Mockito within Agile sprints — ensuring production-ready code quality and seamless cross-functional coordination using JIRA.

Redesigned cashier applications, upgrading from Angular 9 to Angular 12 and introducing Vue.js — boosting responsiveness by 40% and improving user satisfaction scores by 30% from over 1,500 users.

Built interactive UIs with custom Angular directives and RxJS, improving real-time user interactions with backend systems — driving engagement and efficiency.

Delivered 95% test coverage with automation using Selenium — cutting critical bugs by 40% and increasing post-deployment product quality, resulting in a 30% user satisfaction uplift.