Guoqiang Chen

Backend & Blockchain Engineer | Ex-Tencent | High-Throughput Services (78k+ QPS) | Open to HK About: I’m a backend/blockchain engineer with 3 years at Tencent, building and refactoring high-throughput services (peak 78k+ QPS) for large-scale consumer platforms. My strengths are distributed systems, reliability, and pragmatic delivery—turning complex requirements into robust services that are easy to operate and evolve. On the Web3 side, I’ve researched and implemented oracle mechanisms and smart contracts (Solidity), with a strong focus on safety, observability, and failure handling. I care deeply about correctness under load, idempotency, rate limiting, and graceful degradation. What I bring • Backend: Go/Java, microservices/RPC, caching, message queues, relational & NoSQL data, CI/CD, containers. • Systems: capacity planning, latency/QPS tuning, resilience patterns, logging/metrics/tracing. • Blockchain: smart contracts, oracle design, basic auditing/security hygiene. What I’m looking for Backend or blockchain-infrastructure roles (exchanges, custody, payments/fintech, wallets/L2 infra) where I can own high-QPS services and deliver measurable reliability and cost wins. Open to Hong Kong, Singapore, Japan, and English-speaking markets. Relocation & visa sponsorship welcome. English-working proficiency; Japanese N2. DMs open for roles, referrals, or collaborations.