SRE/ DevOps Engineer (Kubernetes, Docker, CI/CD, Cloud)

Must-Have Technical Skills 1. Proxy & Network Protocols - Deep understanding of VLESS, Trojan, VMess protocols, including configuration, optimization, and real-world troubleshooting (experience with Xray/Sing-box is highly preferred). - Strong knowledge of the TCP/IP stack, including TCP congestion control (BBR), MTU tuning, routing tables, and firewall configuration (iptables/nftables). - Proficient in TLS/SSL certificate management, automated renewal, configuration, and traffic obfuscation mechanisms (Reality / XTLS). - Skilled in network diagnostics and packet analysis using tools such as tcpdump, mtr, netstat, etc. 2. Automation & Infrastructure - Proficient in at least one configuration-management tool (e.g., Ansible) for large-scale node deployment and maintenance. - Strong experience with Linux systems (Ubuntu / CentOS / Debian) and excellent Shell scripting skills. - Familiar with container technologies (Docker / Docker Compose) and virtualization environments. Nice to have: - Experience with Terraform, Cloud-init, or other Infrastructure-as-Code (IaC) tools. 3. Monitoring & Security - Hands-on experience in building and maintaining Prometheus + Grafana monitoring and alerting systems, including writing custom metrics. - Practical experience in DDoS/CC attack mitigation, with knowledge of high-protection services (Cloudflare Magic Transit, Alibaba Cloud Anti-DDoS, etc.). - Familiarity with Linux security hardening, permission management, and auditing procedures. Qualifications & Soft Skills - Educational background in Computer Science, Network Engineering, or related fields preferred. - 2–4 years of experience in SRE / DevOps roles within internet or network-service companies. - Strong sense of responsibility for system high availability; capable of making quick decisions and resolving issues under pressure.- Ability to work independently, handle complex operational tasks, and continuously explore and learn new technologies.- Must be willing and able to participate in 24/7 on-call rotation, responding promptly to emergencies.