Don Grevenow Email & Phone Number

Knoxville, Tn, Us

Sacramento, California, Us

Columbus, Ohio, Us

I was the second IT employee hired for this extremely fast-growing company, which experienced more than 800% revenue growth in my first 12 months of employment. I built out the IT infrastructure from a greenfield and implemented a range of IT infrastructure and new technologies from ground up, including virtualization (VMware), SAN, switched/routed networking, network security, VPN, WAN (MPLS/Metro Ethernet), Cisco/SIP IP telephony, and call-center systems. I recruited, trained, and developed an infrastructure team of nine and a help desk team of nine while simultaneously serving as a team contributor and manager. Key accomplishments include the following: I implemented a fully virtualized server/SAN environment, routed/switched network, and remote access for all employees within two months of hire.I led the planning, installation, and configuration of all IT systems, networking, and telephony, as well as the reconstruction of the cable plant, for the company's move/expansion to an 800,000 square-foot office and distribution-center complex within eight months of hire.I brought two additional company facilities online, fully supported and integrated by IT, for a total of four facilities comprising 1.2 million square feet of office and distribution space within 24 months of hire.I completed two major call-center project implementations within six months.I designed and managed the implementation of the company's corporate data center. I implemented a highly redundant network topology to achieve the company-mandated 99.9% uptime service-level agreement.I oversaw the company’s initial PCI DSS certification and managed compliance in the absence of a dedicated security FTE.

Aliso Viejo, Ca, Us

I was promoted into this newly created managerial position with the responsibility of replacing and upgrading an outdated infrastructure at this global software company with more than 1,000 users in 15 remote locations in the US, Mexico and Brazil. I hired, trained, mentored, and managed a six-person technical team in support of the remote users/offices. Key achievements include the following:I standardized the network and system hardware in all of the company's sites while optimizing remote support.I launched Cisco IP telephony at all company sites.I project-managed the integration of four acquired companies into the company's IT infrastructure.I led and completed two (one domestic and one international) major office/data-center moves. I project-managed multiple office and data-center expansions.I spearheaded a successful backup/DR project, which eliminated tape and enabled the remote personnel to manage.I implemented and supervised a central monitoring project for all company sites, which included data-center environmental monitoring, application and system monitoring and alerting, network monitoring, and usage tracking.I realized $100,000 in cost savings year 1 across all company sites for Internet service while boosting data rates in all sites.

In this position, I designed, installed, and maintained the company’s server and network resources. I installed, configured, and managed Windows servers and supported MS BackOffice applications, including IIS, Exchange, and SQL Server. I configured and managed Cisco PIX firewalls, 26xx routers, and Dell switches, and I configured and maintained VPNs to the branch office, corporate, and international locations. I implemented and supported RRAS, PPTP, and Cisco IPsec VPNs. I was charged with software and hardware evaluation/testing and providing secondary support related to the Intertel phone system. Key accomplishments include the following:I modernized the network and server infrastructure through building out robust, standardized environment during a time of fast company growth and multiple new-product launches.I extensively improved operational efficiency and uptime through the introduction of standard IT practices, monitoring, and backup strategies.I led IT operations in the United States and the United Kingdom.I led the IT systems & network integration following the company's acquisition by Quest Software.

I led the installation, configuration, and management of approximately Microsoft Windows servers for this Internet start-up e-commerce/B2B/ASP company with 125 employees. I provided support on Microsoft BackOffice applications, including IIS, proxy server, Exchange and SQL server. I configured and managed the implementation of Cisco PIX firewalls, 26xx routers, and Catalyst switches, and I configured and maintained VPNs to the company's remote corporate and customer locations. I implemented and supported RRAS, PPTP, and Cisco IPsec VPNs. I also implemented security and virus-detection products and resolved all security- and virus-related issues. I was on-call for support 24/7. Key achievements include the following:I designed and built out the network, server, telephone, and customer hosting infrastructure. I created and initiated standard IT practices, monitoring, and backup strategies, resulting in improved operational efficiency and uptime.I improved the reliability and availability of all IT services and implemented a monitoring and reporting program to achieve the company's goals of 99.8% availability for all corporate applications as well as 99.9% system/application availability in the hosting facility for customers.I achieved minimal downtime in orchestrating the move of all corporate IT resources to a new facility.I introduced remote access and VPN solutions for corporate use as well as for the hosting facility and various customers. I was retained as part of a five-person team, and was the only systems professional on that team, during the sale of the company; I was charged with maintaining all systems, customer sites, and service-level agreements for 12 months during the sale and transfer of assets.

Contractor providing Systems Engineering, Administration & Support for the Defense Logistics Agency, Defense Construction Supply Center, Columbus Ohio.

Rockville, Maryland, Us

Contractor providing Systems Engineering, Administration & Support for the Defense Logistics Agency, Defense Construction Supply Center, Columbus Ohio.

Columbus, Ohio, Us

Lead Systems and Network Engineering, Administration & Support Engineer and Helpdesk / End user support Team Lead.

Managed the Systems Programming, Application, Computer Operations and End User Support Teams & Individuals.

Started as a Computer Operator and subsequently promoted to Application Programmer Analyst then Systems Programmer and ultimately Manager of Technical Support.