chen qi

@chenqi

Senior Go backend engineer with 10+ years building distributed IM and realtime messaging systems.

What I'm looking for

Looking for full-time worldwide remote Senior Go Backend Engineer role via EOR/Deel, based in China. Strong experience in distributed IM & realtime messaging, millions concurrent WebSocket/TCP connections. Strong written English for docs, PRs and tickets. Spoken English is limited, prefer async-first, text-driven team.

I’m a Senior Go backend engineer with more than 10 years specializing in distributed IM and realtime messaging infrastructure. I’ve led the design and implementation of high-concurrency WebSocket/TCP gateways, reliably supporting millions of persistent online connections. My daily work covers gRPC service development, Redis state management, Kafka message streaming, bottleneck profiling and system performance tuning. I focus heavily on system stability, low latency and graceful failure handling for large-scale realtime services. I love tackling complex distributed problems and refining high-throughput backend architecture. I work efficiently with written English for technical docs, code reviews and PR discussions, and actively seek async-first worldwide remote teams.

Experience

Work history, roles, and key accomplishments

Architect

Chengdu Shanji Technology Co., Ltd

Mar 2024 - Aug 2026 (2 years 5 months)

Led IM reconstruction with OpenIM source‑level customisation. Resolved message‑storm, SDK disorder and crash issues for reliable multi‑device sync of millions of messages. Built high‑availability backend framework and Kafka‑based peak‑shaving architecture for high‑traffic scenarios. Led a 10+ backend team and improved delivery quality via technical reviews and coding standards.

Go Kafka Redis API Development gRPC High Availability Microservices Team Leadership

System Engineer

Chengdu Jiayi Huyu Technology Co., Ltd

May 2022 - Mar 2024 (1 year 10 months)

Developed game backend and standalone high‑concurrency in‑game IM server with Node.js, supporting 1‑to‑1 and group chat. Built high‑performance HTTP services, leveraged AWS Lambda for serverless elastic scaling to cut operational costs. Optimised horizontal scaling and load‑balancing with Linux & Nginx to sustain peak traffic and guarantee system high‑availability.

Go gRPC MySQL Redis API Development Node AWS Lambda HTTP Linux Nginx Concurrency Load Balancing

Golang Backend Engineer

Hangzhou Weipaitang Culture & Creativity Co., Ltd

Mar 2021 - Apr 2022 (1 year 1 month)

Participated in monolithic system refactoring and microservice migration using Golang, achieved zero‑interruption business transition. Developed and maintained core Golang backend services, performed deep performance tuning for high‑concurrency workloads with MySQL and Redis. Established emergency response workflow to resolve online incidents and guarantee core business continuity.

gRPC Go API Development MySQL Redis Microservices Incident Management

Technical Manager

Chengdu Chuangliu Technology Co., Ltd

Mar 2019 - Mar 2021 (2 years)

Managed a 13-person backend R&D team. Designed core system architecture for product stability and extensibility, formulated technical specifications and coding standards, and conducted internal technical training.

Team Management Architecture Design Technical Specifications Training Project Management

C/C++ Backend Developer

GOME Electrical Appliances Co., Ltd

Sep 2017 - Feb 2019 (1 year 5 months)

Developed IM SDK and C++ server-side modules. Optimised APP server data transmission, implemented thread pool and Protobuf interfaces, and resolved TCP sticky packet issues to raise message forwarding success rate.

C++Protobuf TCP Multithreading

Backend Developer

Baidu Music

Jul 2015 - Sep 2017 (2 years 2 months)

Built high-throughput APIs based on Nginx+Lua and Nginx+PHP. Applied Redis and Memcached cache to reduce database pressure, and developed user information service, playlist and tag related backend modules.

Nginx Lua PHP Redis MemCached Hadoop

C++ Developer

Ezpro

Mar 2014 - Jul 2015 (1 year 4 months)

Responsible for IM SDK and IM server development. Optimised mobile backend data transmission efficiency, implemented thread pool and Protobuf interfaces, and solved TCP sticky packet problems.

C++Protobuf TCP Multithreading