Developed Kafka producers and consumers to stream continuous external user data into backend processing services, enabling real-time application updates and analytics workflows. Built a high-throughput APNs push notification pipeline using goroutines and bounded worker pools, increasing delivery throughput by 25% under peak load. Optimized PostgreSQL and MySQL query paths using composite indexing, join reordering and execution plan analysis, cutting API latency by 30% across reward and transaction services. Implemented Redis-backed caching for high-traffic production APIs to offload hot SQL queries, maintaining consistently low latency under sustained production traffic. Led backend development of a distributed Help & Support routing system using Go and AWS SES, improving case resolution efficiency by 50%. Managed backward-compatible schema changes across multiple production services by versioning payloads and rolling out validators incrementally, ensuring zero data loss during live pr

Software Engineer at Sirius Soft Sol

June 1, 2021 - February 1, 2022

Migrated 3 production services from PHP Laravel to Golang, improving API throughput by 25% and reducing infrastructure cost under load. Rebuilt ORM layers using GORM with optimized indexing and connection pooling, cutting heavy query latency by 15% and DB CPU usage by 18%. Migrated Laravel middleware, routing, and request validation to idiomatic Gin handlers with unified error handling, increasing API handler throughput by 25% under production load. Replaced synchronous job queues with goroutine-based async pipelines for invoice and email processing. Implemented stateless JWT-based authentication with RBAC across distributed services, reducing latency by 35%. Developed unit and integration tests using Go testing and gomock, and integrated them into GitHub Actions for CI workflows.