Support ~19,000 Linux servers for a Fortune 100 customer. • Improved manageability of environment by maintaining server inventory in CFEngine database• Automated troubleshooting and remediation of common issues• Streamlined adding servers to Centrify’s AD bridge by writing a script to automate the process• Reduced wasted resources by analyzing VMware inventory dumps to find unused VMs to decommission• Assisted in resolving server inventory discrepancies across multiple inventory systems in quarterly audits• Wrote PostgreSQL queries, views and reports for CFEngine server inventory•Implemented new CFEngine code releases to the production environment

Manage 8 staff in multiple locations supporting ~1300 servers (RHEL, CentOS, HP-US, Solaris). Responsible for the development and retention of the enterprise Linux server administration team. Responsible for Linux/Unix architecture. • Improved manageability of servers by implementing Chef infrastructure• Reduced OPEX/CAPEX while improving performance and resiliency of Oracle databases by migrating from HP-UX to RHEL VMs• Improved security posture of environment by implementing a monthly patching program for all Linux servers• Shortened timeline for new hire productivity by creating a training program to teach our processes, technologies and environment• Reduced OPEX/CAPEX by implementing procedures to reclaim unused PowerBroker licenses

Supported ~1300 servers (RHEL, CentOS, HP-US, Solaris). Collaborated with database administrators, application owners, data networking & business partners. Participated in project planning and implementation. Developed & maintained documentation. Developed and implemented process improvements. Automated processes. Developed & maintained scripts. Installed & updated systems. Provided troubleshooting.• Automated implementation of PowerBroker Identity Services using vRealize Configuration Manager and scripts• Created method to refresh databases on VMs similar to the current methodology for refreshing DBs on physical servers• Simplified scalability changes and reduced planned downtime of VMs by changing configuration parameters• Migrated servers from EchoStar acquisition to DISH by collaborating with DTC and EchoStar staff

Managed up to 8 staff in multiple locations supporting ~2100 servers (Windows, RHEL, vSphere, AIX, Solaris). Responsible for the development and retention of the enterprise server team. Responsible for Linux/Unix architecture. Managed VMware clusters for RHEL environments. Provided capacity planning & prepared budgets. Directed outsourcer and validated monthly billing for servers, appliances and VDI. Managed enterprise Oracle database licensing.• Saved over $3M in CAPEX & created a pool of over $7M in Oracle Database licenses by migrating from Unix to RHEL/VMware• Achieved Red Hat Certified System Administrator (RHCSA) on RHEL 6• Saved ~$110k in annual OPEX by splitting RHEL and Windows VMs into separate clusters• Saved ~$235k on WebLogic/WebSphere licensing by creating a dedicated VMware cluster• Saved ~$25k in annual OPEX by migrating web/app servers from Solaris to RHEL• Achieved disaster recovery RTO for VMware environment by implementing Zerto for DR replication• Met server build SLA over 99% of the time using internal and outsourcer staff• Reduced hardware/software costs and simplified disaster recovery by virtualizing 99% of RHEL servers• Improved I/O performance by leading SA team in migrating servers from EMC VMAX and VNX storage to NetApp flash array• Improved resiliency of RHEL patching by implementing Satellite Server• Reduced annual Oracle RAC licensing costs by ~$250k annually by moving to standard non-RAC environment• Provided ~80 servers on time for Oracle E-Business Suite R12 upgrade project by leading SA/PM team• Increased stability of AIX environment by leading project to eliminate VIO servers

Responsible for ~500 Linux/Unix servers. Responsible for Linux/Unix architecture. Managed VMware clusters for RHEL environments. Directed outsourcer and validated monthly billing for Linux/Unix servers. Managed Oracle database licensing for the enterprise.• Designed and led 5-year enterprise program to migrate from Unix to RHEL on VMware• Successfully transitioned Linux/Unix and WebSphere services from IBM to Wipro by coordinating the efforts of the teams• Designed disaster recovery solution for Solaris servers using Flash Archives/Jumpstart with restores from backups• Shortened required outage windows for patching Solaris servers by implementing Live Upgrade• Accomplished hardware monitoring of Sun/Oracle servers by implementing Oracle’s Automated Service Request tool• Saved ~$195k in annual OPEX by redesigning disaster recovery for business-critical customer-facing application• Achieved ~$650k in CAPEX cost avoidance on Oracle IAS licenses for a divestiture• Tracked utilization of Oracle Database license pool by creating a methodology and implementing it in Excel• Increased knowledge of ESXi by taking VMware vSphere: Install, Configure, Manage class• Improved performance of business-critical customer-facing application by designing AIX server & storage configurations

Responsible for the infrastructure design and approval of various IT initiatives. Responsible for ~500 Linux/Unix servers in 4 US datacenters. Responsible for architecture of Linux/Unix servers, storage and databases across the enterprise. Validated outsourcer monthly billing quantities for Linux/Unix servers, storage and databases.• Attained ITIL knowledge by achieving ITIL V3 Foundation certification• Improved knowledge of Linux by achieving Red Hat Certified Technician (RHCT-RHEL4) on RHEL 4• Improved outsourcing services by creating new infrastructure statements of work• Improved resiliency of Unix/Linux infrastructure by modernizing server hardware and operating systems• Recovered from a multi-datacenter flood by working with vendors, management and the outsourcer• Updated knowledge of Windows Server by completing Windows 2003 training• Improved knowledge of database technology by completing Oracle Database training

Responsible for enterprise Unix server selection, purchase, implementation and support. Provided primary or secondary support for ~100 Solaris servers. • Improved consistency of server configurations in Houston/Salt Lake City by implementing CFEngine configuration management• Improved business-critical customer-facing application availability by migrating Solaris servers from DAS to SAN• Improved business-critical customer-facing application availability by designing and implementing company's first internal disaster recovery environment• Achieved RTO/RPO in company’s first internal disaster recovery test

Supported 100+ Solaris servers/100+ workstations for trading floor.• Automated configuration tasks for ~400 Unix/Linux servers using CFEngine and other open source tools• Improved security by building Solaris packages for OpenSSH and OpenSSL and configuring them on all Solaris servers• Improved application availability by migrating trading floor Solaris servers from DAS to SAN• Reduced OPEX on hardware maintenance by moving to self-support on Sun servers• Implemented first compute engine environment on trading floor by implementing Load Sharing Facility on Solaris servers• Improved reliability of high availability configurations by replacing FirstWatch with Veritas Cluster Server

Responsible for supporting ~100 Solaris servers and ~100 Solaris workstations for Williams Energy trading floor. Performed hardware and OS upgrades.• Saved ~$100k in annual OPEX for Williams by eliminating unnecessary software maintenance• Achieved Y2K compatibility by testing and remediating software and firmware on Solaris servers/workstations• Improved ability to restore from backups by creating backup reporting system