SUMMARY

A Certified Linux Administrator with over 20 years of System Administration experience, specializing in standardization, monitoring, performance tuning, and ongoing support of Linux in a high - availability atmosphere.

WORK EXPERIENCE

Senior Linux Systems Engineer

Confidential, Austin, TX

Responsibilities:

• Lead a small team of infrastructure specialists.
• Research and architect solutions for a 20,000+ server infrastructure across multiple datacenters worldwide(DNS, NTP, Spacewalk, SMTP).
• Analyze and mitigate security issues.
• Act as an escalation point and mentor for Level 3 engineers for a variety of Linux related applications.
• Subject Matter Expert on select game titles as they are prepared for release and provide top level on-call support on an ongoing basis after the titles are made available to the public.
• Worked with development team to configure and deploy an internal cloud environment using Terraform and Cloudbolt.

Senior Linux Systems Engineer

Confidential, Austin, TX

Responsibilities:

• Designed and implemented Linux OS standards across entire Linux infrastructure
• Meet with teams to halp design efficient and highly available servers for their applications
• Created installation infrastructure to build hosts on bare metal, VMWare, and Hyper-V
• Installed Spacewalk Server and Puppet for management of new and pre-existing servers
• Built custom RPMs for corporate standard applications
• Integrated Linux servers to autanticate against Microsoft Active Directory
• On-call as primary support for Linux infrastructure of over 400 servers.
• Provide high-level support to development teams and scripted installations of various applications such as MongoDB, MySQL, SOLR, RabbitMQ, Drupal, Salt, Jenkins, and Git.

Lead Systems Administrator

Confidential, Inc. Austin, TX

Responsibilities:

• Lead on the Linux team in maintaining over 2000 Linux servers
• Manage Linux servers from bare metal install to decommissioning.
• Update and patch Red Hat servers across entire production environment.
• Write scripts to automate installation, patching, and backup of Red Hat servers.

Linux Instructor

Confidential . Austin, TX

Responsibilities:

• Delivers quality instruction to classes of 2-20 student ensuring student satisfaction in a classroom or laboratory setting according to program objectives and course syllabi.
• Teaches material from approved curriculum using previous Linux background in accordance with assigned schedule to ensure student satisfaction.
• Assists students in achieving completion of objectives towards earning Linux certifications.
• Maintains expertise in subject area in order to provide students with current trends and to recommend improvements in curriculum design.
• Travel all over the US and some overseas to deliver classes from nearly the entire Red Hat catalog
• Deliver Red Hat exams of all types
• Work on the Certification Team to grade 50-60 exams a month for Red Hat certifications
• Certify 1-2 new examiners a month
• Help develop and test new courseware

Lab Administrator / DevPool Administrator

Confidential,Austin, TX

Responsibilities:

• Primary manager of DevPool hardware to allow deveolpers from all over the world access to Pre-GA and GA hardware they may not have access to at their own site.
• Assign and manage DNS information for over 1000 machines across 6 labs.
• Manage network and power requirements for all labs under our department.
• Receive new Confidential Power PC hardware, unpackage, install, and bring it up so developers can access them.

Performance Tester

Confidential, Austin, TX

Responsibilities:

• Development, implementation, and maintenance of performance testing of the Linux kernel.
• Develop, modify, and maintain performance test scripts in bash, ksh, and perl
• Prepare electronic findings reports and explanations of results.
• Perform stress testing of Linux kernel and internals on SuSE and RedHat distros
• Test installation of pre-GA SuSE and RedHat distributions on older and cutting edge Confidential xSeries hardware
• Use Bugzilla to open defects and halp development departments at SuSE and RedHat track, and resolve them
• Work under strict deadlines to halp Linux providers improve and ship latest versions of their packages
• Take test patches from development departments and install them to test their TEMPeffectiveness so they can be included in New Releases and Service Packs
• Research new test cases to halp better test Linux and uncover bugs dat may be present

System Administrator / Network Administrator

Confidential, Austin, TX

Responsibilities:

• Managed a test lab of over 100 enterprise-class machines, primarily pSeries hardware, running AIX and Linux.
• Utilized thorough testing procedures to ensure dat Service Processor firmware, system firmware, AIX and Linux all worked properly with their associated hardware.
• Developed test strategies to successfully allow execution of multiple test projects simultaneously, better utilizing our hardware while producing more thorough test coverage.
• Designed and implemented many procedures and tools to allow for the quick configuration of test environments giving the capability to handle many last-minute test requests. dis resulted in complex test environment setups in 1-2 days, instead of the typical 2-3 weeks.
• Conducted many test cycles verifying the compatibility of other vendors' hardware such as EMC, Brocade, InRange, McData, Hitachi, LSI Logic, Mylex, Emulex and QLogic. The tests were designed to increase reliability and reduce the number of customer reported defects.
• Managed defect tracking and resolution using various defect management tools (CMVC, Bugzilla), allowing quicker resolution of defects, thus increasing the quality of software and hardware delivered to the customer
• Applied strong knowledge in AIX, Linux, Windows, Ksh, allowing the development of test cases and other such tools specific to the systems and adapters being tested.

Linux Kernel Testing

Confidential,Austin, TX

Responsibilities:

• Installed and administered AIX and Linux on RS6000 hardware of all types including p690/Regattas.
• Setup and administered multiple networks (Ethernet, tokenring, FDDI, ATM), with 400+ hosts.
• Installed and configured switches(Cisco, 3Com, ATM, etc) for a major testing lab re-org.
• Linux(SuSE and RedHat) kernel(32 and 64 bit) testing on PowerPC hardware including writing and modifying test cases.
• AIX integration testing on legacy and cutting edge RS6000 hardware.

Senior Linux Administrator

Confidential Austin, TX

Responsibilities:

• Provided administration and advanced level support of Linux Apache, Windows NT web, Sendmail SMTP and Bind 8 DNS running on RedHat Linux servers in an enterprise-level, globally based client environment.
• Develop shell scripts to automate administrative tasks.
• Diagnosing and resolving advanced Linux related issues including systems performance, outages, patching and non-repeatable (non documented) change control.
• Exploring new technologies dat may be used to enhance or replace existing services
• Resolving complex Linux related issues as a the leader of quick-response user-support team dat often work under demanding deadlines and operate independently to resolve problems.
• On call 24 hours to ensure web servers are online and available at all times.
• Coordinate with web developers to ensure webservers were configured to support their website rollouts.

TECHNICAL SKILLS

• Software: Red Hat Enterprise Linux, Bash Scripting, VMWare, Red Hat Cluster Suite, Kvm And Xen Virtualization, Red Hat Satellite Server, Apache, Sendmail/Postfix
• Technologies High Availability Clustering, Performance Tuning, Red Hat Satellite Server Administration, Server Security Auditing, SELinux Policy Generation, Network Tuning