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Administrator System

Bolingbrook, IL
April 26, 2021

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Hamza Masood Khan

Cell: 630-***-****



System Administrator with extensive experience implementing UNIX/Linux on Physical and/or Virtual & Cloud environments.

Excellent analytical and problem-solving skills. Expertise in troubleshooting Servers, OS, and application problems.

Experience in implementing LDAP to authenticate with AD for authentication.

Proficient in System Backup and Recovery.

Experience creating custom channels in Satellite/Spacewalk Server.

Expert in Server builds, Application Installs, Upgrades, Patching, and Performance Tuning.

Experience working with DBAs and providing support for Oracle/MySQL/Postgres Databases.

Experience working with and setting up SMTP servers using sendmail/postfix and setting up relay servers.

Skilled in Disk management, Software Raid, creating file systems using different Volume management applications and EMC Power path management. Experience with configuration and administration of internal/external storage.

Experience working with Development/Production teams and providing support for Java, JBoss, Apache, Weblogic, and Heap Dumps.

Experience working with production and development systems/teams and providing documentation/support.

Experienced working with and providing management support for onshore/offshore teams and training of new employees.

Experience automating tasks with Bash, Perl scripts and using tools such as Ansible, Salt, Puppet, & Chef.


Hardware/OS: HP, Dell, IBM, Solaris, Red Hat, Cent OS, Windows

Virtualization: ESXi, VMware, VirtualBox, Migrations (P2V, P2P, V2V, V2P), Ansible,


Backup : Snapshots, Cron scripts, Netback up

Storage : PowerPath, Multipath, LVM, NAS, NFS, DAS, SAN, NetAPP, EMC

Scripting : Bash, Perl

Database : MySQL, Postgres, Oracle

Other : JBoss, Apache, Weblogic, Atlassian, Zenoss, Zabbix, TCP/IP, DNS, Satellite/Spacewalk, HA, DRS, vMotion, AD, LDAP, SMTP, Patching, Bug Fixes, Performance Tuning, iDrac, Kickstart/PXE, Resource Monitoring, DHCP, Server/VM/Application Deployments/Troubleshooting


Cox Communications, Atlanta GA Jan 13 – Present

System Administrator

Setup various SMTP servers using sendmail/postfix in Dev/QA/Production environments.

-Enable sendmail on servers and work with Firewall/Network teams to allow SMTP port 25 for access to send mail.

-Setup SMTP relay servers to use master SMTP servers.

-Enabled Mail forwarding from various hosts using sendmail configuration file.

-Configured domain based email routing.

Wrote and updated bash scripts to automate daily tasks using cron.

Used Salt/Ansible to patch/update various systems using bash scripts.

Manage postgres databases for various apps. Tune for performance and optimization with configured backups for recovery.

Troubleshoot, maintain and patch applications as recommended by third party vendors.

Perform configuration, tuning, installation, validation, testing and other preparations of applications for rapid deployment.

Respond to server monitoring alerts by investigating problems and developing solutions for related issues… Using ITM, Nagios/Opsview, HP Event Management.

Installed, managed and implemented various java (JDK7) applications on multiple UNIX platforms.

Successfully supported application farms in both WebLogic and JBoss by working with Dev, QA, and Production teams.

Extensive knowledge in Change Management processes using various tools such as Jenkins Deployment Manager as a mechanism to roll out releases to test, UAT, and production environment.

Proven experience with backup and recovery, disaster recovery, and information lifecycle management.

Demonstrated ability with networking concepts (VPN, routing concepts, security) in regard to data architecture.

Installed and configured several hundred Physical and Virtual RHEL/CentOS servers using Red Hat Satellite & Spacewalk servers.

Prepared documentation for all Production application and server deployments.

VMWARE Server capacity analysis and planning for production applications.

Application Server Build and configuration through templates & kickstarts.

Setup authentication with LDAP-AD and fix issues related to AD login from Linux servers.

Assist developers, testers and UNIX teams to troubleshoot UNIX and application related issues.

As a lead, was responsible for training & hand-holding new team-members to the project.

Installed and upgraded packages using Yum and Satellite repositories for upgrades, deployments and patching.

Installed and configured VMware tools on several hundred servers.

Configured and maintained NAS/NFS servers for both media and data sharing between servers.

Developed and executed migration plan to convert 100+ physical servers to VMs.

Assist in deployment of in home-built JAVA/JBoss applications. Deployed EAR/WAR files and scripted automation of JBoss applications.

Built ESXi hosts and supported creation of HA/DRS Clusters.

Responded to emergency calls relating to server/application issues.

Direct TV, El Segundo CA Oct 08 – Nov 12

System Administrator

Built and configured 500+ Application and Database servers.

Assisted with JBoss application cluster configuration.

Worked with DBAs to install and configure 10G/11G Oracle databases.

Supported EMC SAN installation, implementation and troubleshooting.

Managed database storage using EMC PowerPath.

Used LVM for disk management and assisted Oracle DBAs setup ASM Disks.

Upgraded 100+ old servers using RHEL 4 to RHEL 5/6.

Used VMware converter to migrate physical servers to VMs in various environments.

Monitored System performance using various system tools and utilities.

Co-ordination with Development and testing team for planned releases/scheduled activities.

Developed shell scripts to automate daily housekeeping tasks, clean-up and backup activities.

Created documentation related patching, application upgrades and server deployments.

Worked with various vendors for detailed troubleshooting (heap dump analysis, system and application performance issues) and provided detailed analysis to client about issues.

Wrote various bash scripts to automate and streamline tedious daily tasks.

Worked with users to troubleshoot SMTP issues for sending and receiving mail.

Jackson Life, Okemos MI Jun 06 – Oct 08

Jr System Administrator

Solaris and Linux Server Builds for production and Testing environments.

Solaris/RHEL Physical to Virtual (P2V) & Solaris to Linux Migration.

Assisted with user creation and account management.

Setup environment based sudo permissions to allow developers to perform day to day activities including running start/stop scripts in development environments.

Assisted with Server Hardware installation, Disk and Memory upgrades.

Migration of Legacy Hardware and Software as per application requirement.

Assisted with Hardware/Firmware upgrades.

Co-ordination with storage, backup, development, and DBA teams in day to day business activities.

Allocation of additional storage as per Server or environment requirement.

Servers Downtime arrangements and facilitating vendors for any activity.

System performance Monitoring, Troubleshooting, Backup of servers.

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