Senior CloudOps Engineer

Responsibilities Manage, monitor, troubleshoot, and optimize Linux production environments.Deploy and optimize Nginx, including reverse proxy, load balancing, caching, and high-availability configurations.Design and maintain CDN acceleration, caching, origin routing, and traffic optimization strategies.Configure and operate DDoS protection, WAF, and related security solutions, including incident response during active attacks.Manage cloud infrastructure on AWS, Alibaba Cloud, or Tencent Cloud, including compute, load balancers, VPCs, routing, security groups, monitoring, and logging.Troubleshoot production issues such as HTTP 502/504, upstream failures, network problems, and performance bottlenecks.Develop Shell/Python automation and work with engineering teams on deployment, releases, and incident resolution. Requirements 4+ years of hands-on Linux operations / CloudOps / system administration experience.Strong Linux administration and networking fundamentals, including TCP/IP, HTTP/HTTPS, and DNS.Strong hands-on experience with Nginx configuration, troubleshooting, and performance tuning.Practical experience with at least one major cloud platform: AWS, Alibaba Cloud, or Tencent Cloud.Good understanding of CDN architecture, caching, origin protection, and traffic routing.Knowledge of common DDoS attacks, including SYN Flood, UDP Flood, and HTTP/CC attacks.Hands-on experience with DDoS mitigation, WAF, Anti-DDoS, or protected CDN solutions.Strong Shell scripting skills. Nice to Have Experience managing high-traffic or high-concurrency production systems.Real-world experience responding to large-scale DDoS or application-layer attacks.Cloudflare, OpenResty/Lua, Python, Ansible, Docker, Kubernetes, Jenkins/GitLab CI, ELK/Loki experience.Experience supporting international or globally distributed infrastructure. Language Professional Mandarin is required.English communication skills are a plus.