Architecting, building, and maintaining a distributed Splunk 9 environment designed for 4 TB per day of ingest. Created multi-site indexer clusters including SmartStore and traditional storage. Made stretched search head clusters spanning both on-premises and cloud locations. Performing day-to-day system management to provide teams with operational intelligence and security monitoring (with Splunk Enterprise Security) over data from various administrative departments and schools.Integrating Duo multi-factor authentication for Splunk to protect event data.Writing Splunk add-ons including inputs, shell scripts, PowerShell scripts, Python programs, field extractions, data models, lookups, and event tagging to support an efficient user experience. Maintaining event CIM compliance for applicable applications.Orchestrating upgrade projects on the Splunk environment with no interruptions to user experience or data ingestion.Administrating Red Hat 8 and Windows servers, including writing Python programs and shell scripts, performing upgrades and migrations, configuring cron jobs, mounting storage, and installing applications.Providing certificate update automation using ACME and shell scripts, eliminating the need for regular manual maintenance.Building Azure virtual machines, including storage, virtual network, and firewall management, to support on-premises and cloud-based systems.Writing extensive Ansible scripts for server OS patching, Splunk configuration deployment, and general administrative automation.Installed Splunk Enterprise Security for the security team.Performed configuration, maintenance, and troubleshooting of an international, Microsoft Exchange organization with tens of thousands of mailboxes.Implemented Microsoft Data Protection Manager for Exchange, SharePoint, and SQL disaster recovery.Developed a test environment for change testing and product upgrade testing.

Built and hardened Windows 2008 R2 servers for ASP environment, providing a secure, redundant and powerful platform for CORPTAX applications and databases, and insuring reliable performance for hosted customers.Provided a rock-solid collaboration environment by designing and building a highly-available Microsoft Exchange 2007 cluster and redundant transport servers (internal and edge); upgraded to Microsoft Exchange 2010 in a geographically distributed, highly-available DAG environment; integrated Unified Messaging for desktop VoIP and voice mail.Built an Microsoft Office Communication Server (OCS) 2010 environment that integrated instant messaging, Live Meeting and VoIP on the corporate network and Internet, allowing employees and customers to collaborate anywhere and anytime.Provided 24/7 monitoring and alerting for essential systems with Microsoft System Center Operations Manager 2007 R2; integrated various domains and perimeter network systems using gateways.Built, configured and administrated arrays of Microsoft Threat Management Gateway (TMG) and ISA Server firewalls, providing secure access to Web resources for internal clients, including SSL inspection; published various services, such as IIS, Exchange and OCS; provided authenticated proxy access for security and responsibility.Built, configured and administrated servers to support office and infrastructure applications and systems, including Internet web servers (IIS), Microsoft Certificate Services, Microsoft Project 2010, DHCP, DNS, RIM BlackBerry Enterprise Server 5, Symantec Backup Exec 2010, Barracuda Networks appliances.Managed EMC CLARiiON SANs with Unisphere, providing reliable storage for high-performance and high-availability environments.Managed VMWare ESX 4 clusters with vSphere, providing powerful and cost-effective servers for development and production environments.Installed, maintained and repaired hardware, including HP 300-series servers and c7000 blade systems.

Gave second-tier help for 2000+ hospital network users, workstations, servers and peripheral equipment, including 24/7 pager support.Supervised vendor-installed solutions, closely assisting and insuring timely implementation.Implemented Novell ZENworks 4 to simplify application and policy distribution to Windows 2000 and XP clients.

Provided advice and assistance for a hospital-wide, multi-server upgrade and switch to NDPS printing.Wrote scripts to move over a thousand users and their data to new servers, significantly reducing administration time and error.Provided post-migration support for users and workstations, moderating the impact of the transition on the user community.

Designed and implemented a disaster recovery plan, including backup and UPS systems, insuring data integrity and server reliability for IT staff.Fixed server stability and performance problems, establishing a positive reputation for the new systems management staff.Implemented auditing for production servers to improve security and establish accountability.

Transformed an international network containing more than sixty Novell NetWare servers using bindery services, to Novell Directory Services (NDS/eDirectory), reducing administration costs and establishing global standards.Instituted server monitoring using Novell ManageWise and Compaq Insight Manager, significantly reducing unscheduled outages and saving millions of dollars per year in lost productivity.Convinced management to change the corporate server backup strategy and implemented a centralized data recovery system using CA ARCserve, reducing licensing costs, wasted device capacity, and operations time.Traveled, often on short notice, to perform emergency maintenance on remote office servers, minimizing downtime and the risk of loss when recovery exceeded the expertise of local technicians.Replaced an inefficient, manual system of IP address management with DHCP services, reducing the cost of IP device administration and configuration, especially for mobile users.Established a network test laboratory resembling the production environment in order to reliably rehearse maintenance, test changes and evaluate products, significantly reducing costly production resource downtime.Planned, proposed and built a CD-ROM server with 96 drives to consolidate CD sharing, simplify updates, additions and access management, increase capacity, and provide for future expansion.Implemented ZENworks application distribution for departments that used software products requiring frequent updates, significantly reducing the time consumed by floor team support for those clients.

Developed CGI applications for the organization's website as well as created and maintained pages for it.

Developed a retail labeling system that integrated hand-held scanners for our stores using Foxpro with an IBM AS/400 as a backend database server. The application had to run using a 4.8Kbs link to the AS/400. Interfacing the application with the database was done through PC Support/400 DOS drivers, which I exploited from Foxpro using the Foxpro Developer's Kit with a combination of C and assembly language.Built the first Ethernet LAN and T1 WAN for personal computers to provide file and printer sharing for our two corporate offices.