Responsible for supporting clients' computer systems, including upgrades, backups, networking, security and general maintenance.

Developed and maintained Almalinux 9 templates to deploy dozens of virtual servers to VMware vSphere and and AWS public and private clouds for development, testing, staging, and production environments. Utilized Zabbix to create numerous monitoring metrics including server uptime and application availability, as well as managed alerting based on monitoring. Made extensive use of Low Level Discovery (LLD) to automate discovering, categorizing, and monitoring of dynamic Load Balanced and/or Containerized applications. Developed and implemented a partially-automated patching system with Katello and Salt, halving Rapid7 risk vulnerability scan scores while also reducing patching time by over 80%. Assisted teammates and other employees on a regular basis with troubleshooting issues in numerous systems with various configurations Worked closely with application developers to migrate Java and PHP applications from obsolete Operating Systems to supported versions. Created puppet manifests and modules Deployed new versions of load-balanced, customer-facing Java-based applications to production environments with rolling outages to avoid downtime. Responded rapidly to changing security requirements to patch multiple public Internet servers against potentially malicious network traffic and to reissue certificates. Created custom monitoring to track status. Participated in after-hours on-call rotation.

Proactively maintained and monitored 30 corporate Linux servers in a production VMware vSphere virtual environment, including a demo site of the company's proprietary application, thepublic web site, client FTP server, and several internal application servers such as JIRA and a Wiki intranet site, using server management software including Nagios and Cacti to track server health using metrics such as CPU and disk utilization, application response times, and MySQL database server health.In addition to moving the public web server and JIRA application server to a colocated data facility, decreasing downtime of both services to nearly zero, a strong focus on security using SELinux, Splunk, and OSSEC allowed numerous attacks to be detected in realtime and mitigated before damage was incurred.

Deployed and monitored a prototype social networking application which integrated Facebook, Twitter, Brightkite, Identi.ca and RSS feeds into a single interface. Application stack consisted of a dozen virtual Linux servers including multiple Apache Tomcat application servers fronted by dual Apache httpd webservers in a round-robin load-balancing cluster. Other Java components performed redundant aggregation, notification, and message transportation over an ActiveMQ JMS cluster. Adobe AIR client.

Managed both the hardware, including repairs and upgrades, and the software, including creating images; imaging new machines; installing, upgrading, and removing applications, of 150 Windows XP laptop and desktop PCs.Supported over 130 Windows XP employees in 11 global locations via email, remote access, and telephone with Outlook, Word, Excel, network connectivity, VPN access, printing, password resets, and file maintenance, referring issues to the Network Administrators or the Vice President of Information Technology as required. Most issues were resolved within 10 minutes, often on the first call.On-call rotation for Pacific locations and as required for Asian offices; overtime as needed to complete projects in a timely manner. Provided hardware, software, and Enterprise Activation support for 30 Blackberry users using multiple Blackberry models.Maintained 20 networked Dell and HP laser printers, both color and black and white; 30 personal HP black and white laser printers; and multiple eCopy network scanners. Researched and ordered software, hardware, service, and contracted maintenance as required, and tracked license usage. Coordinated, scheduled, and connected Tandberg video conferencing equipment and Microsoft Live Meetings, for internal, external, and third party users.Completed additional projects, such as an automated maintenance plan and benchmark results for new workstations, as appropriate.

Provided desk-side and telephone support to over 400 employees nationally using both Windows XP and Macintosh computers. Responsibilities included setting up new computers and redeploying older systems, installing and maintaining laser printers, barcode printers, and scanners, and assisting with daily users issues such as problems with printing, emailing, or accessing network shares, both desk-side and over the phone. Additional duties included researching technology products prior to purchase, installing software and hardware for employees, wiring phone and network connections, and setting up telephone extensions and voicemail for new employees.

Provided email and telephone support to clients for ASP-based web server applications. Responsibilities included maintaining backups, installing and upgrading applications on clients' servers, researching hosting providers for compatibility, and responding to technical pre-sales questions by phone and by email.Additional duties included processing customer orders, researching competitive products, designing website layouts, correlating actual database schemas to schema documentation, upgrading hardware, and testing applications. Windows 2000/XP environment.

Provided information services such as backups of critical documents, and Internet, printer and file sharing. Designed, implemented and maintained a wired and wireless 802.11g Ethernet local area network. Also generated reports in Microsoft Excel, Word, and PowerPoint. Windows 98/XP, Linux environment.

Maintained Windows NT/2000 computer labs and printers, relocated digital equipment, and provided computer support on an individual basis.