System Admin (Linux or Windows)

Job Description

SYSTEM ADMIN : Core Responsibilities System Configuration & Maintenance Manage provisioning and lifecycle of virtual machines and bare-metal servers, including EC2 instances or equivalents across cloud environments. Ensure proper OS-level configuration, naming conventions, and baseline hardening for new systems. Conduct routine and emergency operating system patching, coordinating with change windows, documenting updates, and validating system stability post-patch. Maintain and control user account provisioning, deactivation, and permission assignments, ensuring adherence to the principle of least privilege and tracking use of elevated (sudo/root) access. Apply and audit OS-level configurations such as kernel tuning, firewall rules, DNS resolution settings, and package dependencies. Monitoring & System Health Management Continuously monitor disk usage, CPU, memory, running processes, and service uptime using system monitoring agents or native tools (e.g., top, df, uptime, journalctl). Investigate and resolve performance anomalies or service degradation issues, escalating to platform or application teams as necessary. Schedule and verify full and incremental OS-level backups, ensuring backup logs, timestamps, and recovery procedures are documented and tested. Reliability & Recovery Support Plan and execute failover and recovery tests for system-level infrastructure layers (e.g., clustered services, replicated file systems), in collaboration with L3 teams. Maintain runbooks for system restoration, service reboots, and rollback procedures to ensure quick recovery during unplanned events. Support maintenance windows and production cutovers, providing OS-level readiness checks, validation steps, and post-event logs. DeliverablesPatch & Change Documentation Patch logs and change control records, including update versions, change tickets, approval references, and post-patch verification results. System Health & Performance Reports System health summaries highlighting disk usage trends, high-load instances, service restarts, and anomaly flags from monitoring dashboards. Access & Audit Logs User access and session logs, with focus on privileged account usage and login anomalies. Sudo command audit reports, capturing all administrative actions executed under elevated privileges with timestamps and user mappings. INTERESTED CANDIDATE PLEASE SHARE YOUR UPDATED RESUME ON netra.chaubal@bootlabstech.com