Ted Youngsoon Lee

Designed and built 6+ backend microservices (avatar, item, land, inventory, trade) for a global metaverse game platform communicating with web3 and blockchain. Architected event-driven serverless backend using API Gateway, Lambda, SQS, and DynamoDB — reduced operational overhead and scaled automatically with player demand. Built data pipeline platform for game log analysis using DynamoDB, Redshift, and AWS serverless components, enabling data-driven product decisions. Implemented gRPC inter-service communication for low-latency internal APIs alongside RESTful public endpoints.

Built and owned Billing Service end-to-end for a global game platform — handled real-money transactions, refunds, reconciliation, and fraud checks with idempotency and retry semantics. Built backend microservices stack in Go alongside Billing: Game Service, Auth Service, Chat Service, Item Service — REST + gRPC inter-service APIs. Operated production systems on AWS EKS (Kubernetes) with serverless components (Lambda, SQS), on-call for live global game services. Designed and operated data pipeline platform for player behavior and business metrics at scale.

Led legacy Java-to-Go migration — service-by-service, with rollback strategies, feature flags, and incremental cutover to keep the game publishing stack live throughout. Improved development velocity and system performance post-migration; designed API versioning and backward-compatible contracts for consumer services. Built advanced management website that accelerated user claim resolution and generated business data reports, directly contributing to increased sales. Designed DB schemas and managed MSSQL, PostgreSQL, and Redis for the game microservice platform.