Maurice Tan

I’m a Senior Software Engineer with 8+ years building and shipping production systems across global technology companies including Meta, ByteDance, and Shopee. I take full-stack ownership, with backend depth in Go and Python, and frontend leadership in React and TypeScript.

At Meta, I migrated advertising event tracking to server-side Conversions API (CAPI) with event deduplication and payload normalization, improving modeled conversion accuracy by 10% under iOS ATT and GDPR constraints. I also built GraphQL/REST delivery endpoints for Advantage+ and implemented AEM automation to replace manual event priority configuration with privacy-compliant aggregation.

At ByteDance, I engineered REST APIs and real-time KYC lifecycle event streaming using Kafka and AWS Kinesis, supporting GDPR/CCPA and regional KYC/AML requirements. I reduced p99 checkout decision latency from 4.2s to under 800ms by refactoring synchronous dependencies into async fan-out with graceful degradation, and built tamper-evident KYC audit trails with cryptographically hashed records.

Earlier at Shopee, I led a migration to Webpack 5 Module Federation to enable runtime code sharing and independent deployments, cutting change lead time by 60%. I’ve also driven frontend observability with ClickHouse-backed tracing, accelerated CI with test sharding in Kubernetes, and improved release readiness with k6/JMeter—always with a consistent focus on system reliability, clean engineering practices, and thoughtful API design.