TECHNICAL SKILLS:

• Chef recipe development
• Test Kitchen with ServerSpec
• Puppet manifest development
• Scripting in Bourne/Korn shell, sed, awk, Perl, Python, PHP, Ruby
• Basic C development on UNIX platforms with make and gcc
• PowerShell scripting
• Linux (CentOS, Red Hat Enterprise Linux, Debia n, Ubuntu, others), AIX, HP - UX, Solaris
• Server monitoring with MRTG, nmon, Zabbix
• Cross-platform integration using Kerberos, Confidential, Samba
• Migration of Linux servers from physical hardware in to VMWare
• Amazon Web Services, including CLI and boto scripting
• Docker on Linux
• Vagrant box creation with Packer
• Linux test environments with Vagrant
• Wireshark and tcpdump for application and network troubleshooting
• TCP/IP and Ethernet configuration on multiple platforms
• Load-balanced services
• Host-based firewalls with IPTables
• Custom OpenWRT network appliances
• OpenVPN client and server
• Tomcat and WebSphere on UNIX platforms
• Apache web server, including reverse proxies and SSL
• Confidential services with IBM Tivoli Directory Server and OpenLDAP, including LDIF and Perl Net:: Confidential module
• Database applications using IBM DB2, Oracle, Postgres, MySQL, SQLite, BerkeleyDB
• Version control and repository configuration with git and Subversion ( svn)
• Web server traffic analysis with AWStats
• Compilation, packaging, and installation of open source software
• General SSL use, including operation of private certificate authorities
• DNS services using Confidential Bind, PowerDNS
• SMTP mail services using Sendmail, Postfix
• Apache Hadoop cluster management
• Confidential server administration
• Metrics collection with Graphite

WORK EXPERIENCE:

DevOps Engineer

Confidential

Responsibilities:

• Developed Chef cookbooks to apply standardized DISA STIG configurations and install infrastructure services.
• Wrote automated tests for Chef cookbooks with Test Kitchen and ServerSpec.
• Designed and documented Chef infrastructure running in AWS environments using external Postgres in RDS.
• Advised on best use of AWS technologies.

Cloud Engineer

Confidential, St. Louis, MO

Responsibilities:

• Cloud engineer supporting AWS-based web application environments.
• Updated Python and Puppet automation framework for new requirements or bug fixes.
• Scoped technical tasks for tool enhancements.

Senior Consultant

Confidential, St. Louis, MO

Responsibilities:

• Technical lead for application infrastructure/operations team.
• Drove improvement of application disaster recovery procedures.
• Coordinated transition of reporting support from development team to operational support team.
• Advised on PCI certification remediation plan for reporting application.
• Worked with multiple teams to resolve outstanding audit points by migrat ing to HSM enc ryption keys.

Consultant

Confidential, St. Louis, MO

Responsibilities:

• Technical lead for new application implementation.
• Redesigned Confidential reporting infrastructure to address performance issues before production rollout.
• Documented installation, configuration, and problem analysis procedures. Built training plans for support t ransitions.
• Worked through successful PCI certificatio ns. Wrote utility and installation scripts in PowerShell.
• Wrote custom SQL queries to retrieve information from vendor schema.
• Installed infrastructure for ASP.NET application on Windows Server 2008 and transitioned primary support to web administration team.

Senior System Administrator

Confidential, St. Louis, MO

Responsibilities:

• Maintained centralized configuration for servers and applications using puppet.
• Supported Linux servers running on physical hardware, Xen virtualization, and Amazon EC2.
• Maintained OpenLDAP internal authentication service. Scripted bulk editing and load of employee photos to Confidential directory using Python and Confidential .
• Managed Apache Hadoop compute clusters.
• Configured git repositories using gitosis and ssh keys.
• Configured and supported MySQL databases.
• Installed MongoDB servers.

System Administrator

Confidential, St. Louis, MO

Responsibilities:

• Managed CentOS, Red Hat Enterprise Linux, and AIX, hosting web, database, and analysis applications.
• Configured Kerberos on Linux and AIX for centralized authentication against Active Directory.
• Introduced version control for infrastructure tools. Implemented server monitoring and reporting using Zabbix and nmon.
• Wrote tools to migrat e existing Red Hat Enterprise Linux physical servers to VMWare.
• Wrote automated deployment scripts for WebSphere and WebSphere Portal. Advised teams on use of SSL certificates and Confidential authentication.
• Implemented secure file transfer system using Apache and SSL client authentication.
• Consolidated Subversion repositories to a single host to reduce administrative overhead.
• Completed online SAN migration on AIX using LVM, PowerPath, and dynamic LPAR operations.
• Wrote interim network backup script for AIX environment pending migration to shared backup infrastructure.
• Replaced redundant servers with VMWare DRS configurations to reduce licensing and administrative requirements.

System Administrator

Confidential, St. Louis, MO

Responsibilities:

• Managed storage using HP LVM and OnlineJFS. Evaluated patch requirements and software prerequisites for new software installations.
• Built IBM Tivoli Directory Server environment to be used for external user authentication in web applications.
• Identified architecture issues in Directory Server implementation and worked with other teams to resolve.
• Wrote SAN storage a nalysis script to avoid costly vendor service and reduce provisioning errors.

System Administrator

Confidential, St. Louis, MO

Responsibilities:

• Managed servers running Red Hat Enterprise Linux, hosting Java-based web application infrastructure.
• Generated reports on server utilization and web traffic.
• Wrote scripts for system automation and granted nonprivileged users access through sudo and Webmin.
• Took part in disaster recovery exercise involving bare-metal recovery.
• Implemented host-based firewalls using IPTables for server isolation on shared networks.
• Maintained Apache web servers for both application and administrat ive functions.
• Coordinated deployment of externally-accessible Subversion version control system.

Software Engineer

Confidential, St. Louis, MO

Responsibilities:

• Configured Apache, iPlanet, WebLogic, and WebSphere on Solaris.
• Maintained Confidential Bind and worked on domain transfers and registrations.
• Worked with system automation using ssh public key authentication.
• Prepared disaster recovery systems and assisted in writing DR procedures for Operations team.
• Worked with in-house SSL certificate authority.
• Drafted initial standards for secure WebSphere environments.