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Responsible for the planning, design, and deployment of enterprise IT infrastructure (including operating systems, servers, storage, virtualization, etc.).Optimize system architecture according to business needs, improve system performance, stability, and scalability.Responsible for daily operation and maintenance, performance tuning and troubleshooting of Linux/Windows system.Monitor system resource usage, analyze system bottlenecks, optimize configuration, and improve resource utilization.Design and develop operation and maintenance automation tools to improve system management efficiency and reduce manual operation risks.Participate in CI/CD process optimization, achieve automated deployment and system updates.Develop and implement system emergency plans, respond quickly and solve sudden system failures.Analyze the root cause of the fault in depth, form a complete report and optimization plan, and continuously improve system stability.Responsible for system security reinforcement, vulnerability repair, and permission management to ensure system compliance and data security.Regularly perform security audits, backup and recovery drills to enhance system protection capabilities.Write and maintain technical documents such as system architecture diagrams, operation and maintenance manuals, and fault handling processes.Provide system usage and troubleshooting training for the development team and other relevant personnel.