TOS Metadata Control Plane

Owned and evolved TMeta, the metadata control plane for TikTok Object Storage (TOS), supporting globally distributed storage infrastructure with cache-first serving and graceful degradation.

RDS to KV Online Migration

Migrated the metadata backend from RDS to KV without downtime using a 6-stage rollout strategy with dual-write, backfill, consistency verification, and rollback safety at every phase.

Credentials Encryption

Introduced encryption for sensitive AK/SK credentials in the metadata persistence layer with backward-compatible rollout and zero-downtime deployment.

Quota Automation & Traffic Governance

Built an automated quota management system with traffic prediction, safety guardrails, and enforcement through the metadata control plane and distributed rate limiter.

ByteKV ZTI Authentication

Integrated ZTI-based authentication for ByteKV database access, replacing unauthenticated access with a standardized, identity-based security model via staged online rollout.

Promotion Gateway & Double-Layer Cache

Built the gateway API serving homepage flash-sale traffic with a double-layer cache strategy (local memory + distributed Redis/Memcached) to reduce backend fan-out under traffic spikes.

Platform Library Engineering & Adoption

Built reusable platform libraries (caching, circuit breaker, rate limiter) and a Library Management System to improve engineering consistency across teams during Shopee's Go migration.

Moma

A budget management iOS app designed for multi-currency expense tracking, helping users monitor spending across different currencies and accounts without touching their real money.

Chill

A Kegel exercise training app that helps users create customized workout plans — either manually or via AI-generated recommendations based on personal preferences — and guides them through each session.