The position is responsible for maintaining and upgrading CDN technical security, as well as developing backend services. The job involves solving business logic and data product-related issues, improving and maintaining backend services. The ideal candidate should have at least 3 years of experience in backend service development, particularly with CDN projects. They should be familiar with TCP and HTTP communication protocols, and have a strong understanding of Golang concurrency and Linux systems. Additionally, the ability to debug is essential. As the backend engineer is already part of the project, priority will be given to candidates with relevant project experience. There are no strict age or education requirements. To apply, please submit your resume to [email address].