互联网大厂10年后端研发工程师，具备扎实的技术功底与丰富的项目实战经验，擅长后端架构设计、性能优化及问题排查。
Backend R&D Engineer with 10 years of experience in a top internet company, possessing solid technical skills and rich practical project experience, proficient in backend architecture design, performance optimization and problem troubleshooting.