Enterprise Systems Administration
Infrastructure.
Hands-on installation, configuration, operations and troubleshooting of enterprise server platforms and supporting application infrastructure.
The capabilities below summarize confirmed hands-on work. Employer-specific histories remain separate and will be expanded as project attribution is verified.
01 / Server Software Installation & ConfigurationEnterprise Software · Service Setup · Configuration02 / Linux, IBM AIX & Windows Server AdministrationRHEL · IBM AIX · Windows Server · SSH · RDP03 / Linux System Administration & Troubleshootingsystemctl · service · journalctl · ps · top · htop · kill · df · du · mount04 / Networking, Firewalls & Load BalancingInterfaces · Routing · Firewall · Connectivity05 / Identity & Access ManagementActive Directory · LDAP · Authentication06 / Server Performance & TroubleshootingCPU · Memory · Resource Utilization · Diagnostics07 / Task Scheduling & Operational AutomationWindows Task Scheduler · Scheduled Operations08 / Backup Configuration & Recovery SupportBackup Configuration · Restore Procedures
01 / Infrastructure
Server Software Installation & Configuration
Enterprise SoftwareService SetupConfiguration
- Installed, configured, and maintained enterprise software and application components on Linux, IBM AIX and Windows Server systems.
- Adjusted application and system settings to match operational and deployment requirements.
- Validated installation, startup, service availability and configuration; investigated installation and runtime problems.
02 / Infrastructure
Linux, IBM AIX & Windows Server Administration
RHELIBM AIXWindows ServerSSHRDP
- Worked with Red Hat Enterprise Linux, IBM AIX and Windows Server in enterprise environments.
- Connected to Linux/UNIX servers over SSH using PuTTY and access workflows involving CyberArk.
- Accessed Windows Server using Remote Desktop Protocol (RDP) and performed authorized administrative configuration with local administrator privileges.
- Troubleshot operating-system, application service and configuration issues.
03 / Infrastructure
Linux System Administration & Troubleshooting
systemctlservicejournalctlpstophtopkilldfdumount
- Managed system services and verified status, start/stop and restart operations using systemctl and service.
- Inspected operating-system and service logs using journalctl.
- Investigated running processes, CPU use and memory consumption using ps, top and htop.
- Managed unresponsive processes using kill; checked disk capacity and directory usage with df and du.
- Inspected filesystem mounts and related issues using mount and performed troubleshooting to restore application availability.
04 / Infrastructure
Networking, Firewalls & Load Balancing
InterfacesRoutingFirewallConnectivity
- Checked server network interfaces, application endpoint accessibility and website or service availability.
- Investigated network routes and firewall-related connectivity restrictions impacting application access.
- Supported load balancer setup when needed for application availability and connectivity.
- Troubleshot network access between applications, database services and backend infrastructure.
05 / Infrastructure
Identity & Access Management
Active DirectoryLDAPAuthentication
- Worked with Microsoft Active Directory and Lightweight Directory Access Protocol (LDAP) to support application authentication and authorization.
- Investigated user/group access issues, directory connectivity failures and application access configuration.
- Configured relevant application security and identity integration settings as part of operational support.
06 / Infrastructure
Server Performance & Troubleshooting
CPUMemoryResource UtilizationDiagnostics
- Monitored CPU usage, memory consumption and system load to investigate performance degradation.
- Inspected application and server behavior to identify resource bottlenecks or service failures.
- Performed operational troubleshooting and validated application functionality after corrective steps.
07 / Infrastructure
Task Scheduling & Operational Automation
Windows Task SchedulerScheduled Operations
- Created and configured Windows scheduled tasks to automate operational and application-related activities.
- Investigated scheduling failures and verified successful execution of recurring tasks.
08 / Infrastructure
Backup Configuration & Recovery Support
Backup ConfigurationRestore Procedures
- Configured and supported application and server backup procedures as part of enterprise infrastructure operations.
- Documented or followed recovery requirements and investigated issues affecting backup or restoration workflows.
- Connected backup and recovery processes with application restoration and Disaster Recovery runbooks.