• Migrated a monolithic Spring-based system to a scalable event-driven architecture using AWS Lambda (Node.js), significantly improving data reliability and fault tolerance for real-time stocks data. • Designed and implemented a robust event failure handling mechanism to persist, monitor, and retry failed events (e.g., DB locks, system downtime), enhancing system resilience using Kafka queues. • Led the integration of Discord into Tadawuly, a Spring Boot-based social platform, including full OAuth2 flow, bot onboarding, and real-time post/message sync using Discord Gateway. • Developed...

• Gained in-depth understanding of WoW Health’s software architecture based in Java Spring boot, including integrations with third-party services, payment gateways, and internal financial systems. • Learned core concepts of banking and payment systems, including order workflows, vouchers, ledgers, sub-ledgers, and credit/debit reconciliation. • Developed a refund rollover system to automatically apply unused credits to next-month invoices and adjust pricing accordingly in Spring boot and PostgreSQL. • Built a commission management module in Java Spring boot to calculate and distribute...

• Gained hands-on experience with distributed caching topologies including Mirrored, Replicated, and Partitioned-Replicated Caches using NCache developed in Core Java. • Contributed to the development of NCache Playground, a browser-accessible platform offering isolated, containerized environments for real-time NCache trials using Spring boot and docker. • Worked on a SaaS platform built in Java Spring boot for provisioning and managing NCache environments on AWS and Azure, including automation of VMs, networks, subnets, and billing using Terraform. • Followed Agile practices using Azure...