Professional Details

Latency Reduction & GraphQL TuningReduced API P95 latency from 820ms to 570ms for a GraphQL service, directly improving page load time and conversion funnel drop-off for handling 50K+ daily requests, by implementing DataLoader resolver, AppSync response caching with TTL tuning, eliminating N+1 query patterns across 12 resolver chains.

DynamoDB Scaling ArchitectureEliminated hot partition bottlenecks for a multi-tenant e-commerce platform with 200+ tenants and 8M+ monthly records, by designing a Single-Table DynamoDB schema with composite sort keys, sparse GSIs, and write-sharded partition keys, enabling sub-10ms reads at p99 under peak load.

Event-Driven Cost OptimizationCut image processing infrastructure costs from $4,200/month to $1,100/month by re-architecting a synchronous processing service into an event-driven Lambda + SQS pipeline with Dead Letter Queue handling and idempotency keys, achieving 99.99% processing durability across 2M monthly events.

UI Concurrent React OptimizationsImproved perceived UI responsiveness by 40% (measured via Lighthouse TTI regression tests) for a concurrent shopping cart feature used by 5K+ daily active sessions, by designing an optimistic update layer in React with WebSocket-driven conflict resolution and exponential backoff retry logic.

Zero-Downtime ECS DeploymentsAchieved zero-downtime deployments across 6 production services previously causing 45 minutes of weekly maintenance windows, by leading the migration from EC2 to AWS ECS Fargate with Blue/Green deployment pipelines, automated rollback triggers, and container-level health checks integrated into the CI/CD pipeline.