OBJECTIVE:

A result - driven Linux System Administrator with five years of experience and broad knowledge in the installation, configuration and management of Linux servers and services in line with operational requirements. Maintaining best practices documentation for operations, security and efficiency.

SUMMARY:

• 6 years of experience as a Linux Systems Administrator
• 6 years of experience in Computer software and hardware configuration
• 6 years of experience in enterprise information technology operations
• 5 years of experience in Data Center Virtualization Technologies
• 5 years in Application Security Management
• 6 years in User Administration and Role Based Access Control
• 6 years in Linux and Windows Networking and Patch management
• 5 years of experience in bash scripting
• Bachelor’s Degree
• Professional Training in CompTIA A+
• Splunk Enterprise Trainning
• VCA-DCV Certification

Software and Operating System Environments: VMware ESXI, VSphere, Vcenter Converter, Oracle Virtualbox, Oracle Enterprise Linux, KVM, SSH, FTP, SAMBA, Tomcat and APACHE web server, Nagios, Solarwind, Wireshark, LVM, VERITAS Volume Manager, Red hat Enterprise Linux 5, 6 and 7, Bash Scripting, Backup and Recovery, Enterprise Servers, Server and User Provisioning, Resource Management.

Networking: TCP/IP, SWITCHES AND ROUTERS, DNS, HTTP|HTTPS, DHCP, IPTABLES, PING, NETSTAT, BOUNCING SERVERS, INTERFACE CONFIGURATIONS, TELNET, SSH, MOBA XTERM, VPN, DRAC, TCPDUMP, WIRESHARK, NMAP

Enterprise Hardware: Dell PowerEdge Servers T620, T20, R210, 2950, 1850, HP Proliant Servers, CICSO Routers, Switches, Firewall Appliance. Performed Datacenter Capacity planning, developed Continuity of Operations Plans (COOP).

PROFESSIONAL EXPERIENCE:

Linux System Administrator

Confidential

• Installation, configuration and patching of RHEL 6 & 7 servers both virtual and physical machines.
• Monitoring and maintenance of Unix/Linux systems to include; RHEL 6 & 7, SUSE, Solaris.
• Installation and maintenance of software for scientists to carry out their researches such as; DOORS-NG, gforge, Atlassian Bamboo, fisheye and Jira on RHEL 6 &7 servers.
• Performing backups using tape drives and external Hard Disk Drives (HDD).
• User Management using Active Directory i.e. BMC FootPrints, and ldap.
• Using configuration management tools such as cfengine for configuration automations.
• Bash shell scripting for process automations.
• Monitoring system performance through system monitoring tools such as splunk and Nagios.
• Virtualization using VMware’s VSphere Web Client.
• AWS.

Linux System Administrator

Confidential, Herndon, VA

• Produced baseline documentation on installation / reconfiguration of SNMP on various platforms to include; RHEL 4, 5 and 6, centos 5,6, windows 2000, 2008, 2012 R2 STD, VMware ESX, ESX 2.5.1, 3, 3.5, ESXi 5, BSD, Debian, Solaris 9 and 10, IRIX, AIX, and SunOS.
• Reconfigured SNMP to send traps to designated target servers on 27000 servers via VPN access.
• Enabled ACL access on RHEL, Centos, and windows hosts.
• Performance management using Solarwind Network Performance Manager.
• Produced PowerShell script to enable SNMP on windows servers.
• Perform installation and configuration of multiple Linux Servers.
• Perform troubleshooting to isolate and diagnose common Linux system problems; document system events to ensure continuous functioning. Recommends corrective actions and ensure implementation of actions on change request approval.
• Diagnose performance problems related to network issues, and memory/CPU utilization.
• Install, test, upgrade and configure system files and services to enhance application security and operational performance.
• Used Remote Desktop and Virtual Private Network Appliances for Server Configuration.
• Used puppet for configuration management on RHEL servers.

Linux System Administrator

Confidential, Lanham, MD

• Installed, configured and managed Red Hat Enterprise Linux 5, 6 and Centos 5, 6 on Dell Power Edge R210.
• Installed and managed packages and patches on Red Hat using RPM and YUM.
• Installed and configured DNS, NFS, DHCP and Samba services running on Red Hat Linux.
• Auditing server access and security using password ageing, user accounts and strong password as well as linux security extensions.
• Created and administered permission and privileges on user and group accounts.
• Assisted project teams with technical issues both in the planning phase of site and development efforts.
• Monitored network using Nagios.
• Managed Red Hat drives using Linux Volume Manager.
• Wrote baseline documentation on all server build and configuration.
• Used bash and Perl scripting for several program applications. Troubleshot and resolved network connectivity issues to include; TCP/IP, DHCP and DNS.
• Administered server consolidation program using VMware ESX server and VMware Virtual Center.
• Configuring user based and host based security using tcp wrapper and iptables.
• Documentation of processes and procedures.
• Strong interpersonal skills.
• Create and configure set-GID directories for collaboration; Create and manage Access Control Lists (ACLs).
• File transfer with NFS, Autofs, FTP, SAMBA, SSH etc.

System Administrator

Confidential, Silver Spring, MD

• Built YUM repositories on servers.
• Installed and configured Red Hat on Dell E2960.
• Created and managed user group accounts as well as permissions.
• Implemented password aging.
• Monitored system performance using top, ps, netstat, vmstat and cpuinfo to check CPU utilization, network traffic and memory usage.
• Installed and configured samba and NFS.
• Monitored system logins.
• Implemented RAID 0, 1 and 5 for creation of logical volumes using VERITAS Volume Manager.
• Installed and managed packages using YUM and RPM. Compression and Decompression of files and performed Backup and Recovery on RHEL servers.
• Maintains data files and Monitor system configuration to ensure data integrity on Red Hat Systems
• Installed, configured and managed software on RHEL servers.
• Provided customer service to resolve computer issues.
• Maintain records of daily business transactions, problems and remedial actions
• Use Web based ticketing System to transmit client request to senior technical team.
• Antivirus installation and configuration
• Ensure that client’s computers have access to SERVERS and other Network resources