SUMMARY

• Dedicated to improving customer satisfaction and user productivity by proactively troubleshooting and developing IT environments providing reliability and stability. Experienced System Administrator with expertise in Linux, Solaris and other UNIX Variants.
• Familiar with building, maintaining and migrating systems on proprietary hardware such as Sun Sparc Systems as well as Unix versions on PC and other hardware. Dedicated team member excelling as lead or contributing member.
• Experienced in troubleshooting problems and implementing solutions. Enjoy finding better ways of getting the job done. Equally comfortable in both large and small Enterprise environments. Obtained leadership positions with several companies by leading and growing their networks.

TECHNICAL SKILLS

Operating Systems: VMware, Windows, Linux (Redhat, Centos, Ubuntu, Suse), Solaris, AIX, FreeBSD, BSDI, Cisco IOS, Juniper Junos, ESX

Hardware: HP Proliant, Dell Poweredge, Sun Sparc, Ultra, T4, T5 Servers, VMware, Cisco Routers, Cisco Catalyst Switches, Juniper Routers, D - link, Netgear, Ascend/Lucent Pipeline Series

Software: Ansible, Ansible Tower, Chef, ServiceNOW, vSphere, Wireshark, puTTY, MobaXterm, Tectia, Powerbroker, OSI Netexpert, HP Openview, Micromuse Netcool, Nagios, MRTG, Apache, NFS, DHCP, NTP, BIND, Weblogic, Websphere

PROFESSIONAL EXPERIENCE

Confidential, South Lake, TX

Orchestration Administrator

Responsibilities:

• Create and Maintain Ansible Playbooks using GitLab for source control
• Troubleshoot and correct Ansible Playbooks to correct issues discovered during deployments allowing deployments to be completed on schedule
• Create Ansible Tower Organizations, Projects, Job and Workflow Templates, Inventories for new systems and applications
• Deployed Firewall and Load Balancer system in several states in under two weeks using automation saving the Application Team over two months of manual work.
• Develop an Ansible Tower Project to automate backup and restore procedures for multiple devices, including f5 Firewalls, f5 Load Balancers and Cisco Gateway devices

Confidential, Ft Worth, TX

Linux System Administrator

Responsibilities:

• Scheduled and implemented Operating System and application patches as well as changes to correct vulnerabilities reported by scans and vendors, securing the environments against reported vulnerabilities
• Correct environmental and server issues to allow the installation of Agent software for patching and software updates to allow the automation of OS patches.
• Address capacity issues with Virtual Servers adding disk, memory and CPU resources and reconfigure the OS when needed, maintaining and improving the stability of the environments.
• Configured and repaired server console connections to allow server management in the event of network outages.

Confidential, Las Colinas, TX

UNIX Infrastructure Administrator

Responsibilities:

• Migrated Powerbroker Systems for LATAM/Argentina from RHEL 5 to RHEL 6 with no downtime or customer reported incidents.
• Converted Solaris UFS file systems to ZFS file systems to allow for migration to new SAN hardware.
• Migrated Solaris and RHEL servers from EOVS SAN hardware to new SAN infrastructure saving the company $80,000 monthly in vendor support charges.
• Migrated Solaris systems to new RHEL servers enabling savings on licensing costs.
• Built and configured RHEL 6 servers to replace EOVS RHEL 5 systems on both physical servers as well as VMware virtual machines, providing a new hardware and software to improve environment reliability.
• Migrated Solaris systems to new RHEL servers enabling savings on licensing costs.
• Migrated the ConfigDB Database from Solaris server to new RHEL server my second week on the infrastructure team
• Worked with teams in Europe, Latin America, Japan, Singapore and Poland as well as Data Center teams within the US to perform Continuation of Business testing in Data Centers throughout the world.
• Supported other SA teams in Singapore, India, Japan and Europe to provide coverage during their off-duty hours.
• Trained new System Admins offering guidance on Citi systems and new environments allowing them to contribute to the team sooner
• Participated cross-training sessions with members of other SA teams and the Automation team to increase our ability to respond to issues.
• Built and configured new servers for projects based on Citi Build standards and the needs of the Application.
• Built new servers and configured Veritas Volume Manager.
• Created or modified shell scripts (ksh, bash) on servers to automate and simplify Administrative tasks, allowing SAs to focus on other issues

Market Data Services UNIX Administrator

Confidential

Responsibilities:

• Performed Hardware Tech Refresh for Market Data Services, building and configuring the entire environment and delivering at least two days ahead of schedule.
• Installed and configured the first Solarflare 10GB Ethernet Network cards used in Citi Networks.
• Configured and maintained Red Hat Linux servers along with Sun Solaris servers and worked with application teams to optimize server and application performance.

Confidential, Las Colinas, TX

UNIX Administrator

Responsibilities:

• Configured and maintained iPlanet and Apache Webserver instances
• Configured and maintained applications using Oracle Weblogic and IBM Websphere software
• Worked within SOX requirements to ensure compliance of existing and new features and software
• Migrated applications to new platforms in response to failing systems or new hardware availability