David Tomkinson Email & Phone Number

Southfield, Michigan, US

Southfield, Michigan, US

Supporting the overall IT infrastructure with primary focus on virtualization and storage

Hanover, MD, US

Dedicated to supporting the thyssenkrupp Materials NA overall server infrastructure with primary focus on virtualization and storage

Fort Mill, SC, US

• Provided strategic and operational leadership in the delivery of managed technical services
• Lead the successful transition of managed services support from a 3rd party vendor to internal
• Hired and directly managed onsite senior level technical engineers
• Ensured effective services support from near and offshore teams
• Developed, maintained, and refined high quality delivery practices
• Interacted daily with client’s senior leadership

Frankfurt Am Main, DE

• Guaranteed effective and efficient production service delivery is provided by T-Systems and its contracted partners
• Served as on-site Team Manager of the production Network Operations, Security Operations, and Data Center Operations teams.
• Acted as the operational interface for contracted service delivery for the SDM
• Accountable for incident, problem, change, asset and configuration management for commissioned services
• Provided subject matter expertise to assist team members with troubleshooting and planning
• Guided and coached staff

Houston, TX, US

• Lead VMWare Administrator. Maintained complex enterprise-level, multi-datacenter and multi-cluster vCenter environments with ESXi 4.1, 5.5, and 6 hosts which also included SRM and vShield.
• Managed and monitored ESXi host server hardware primarily consisting of Cisco UCS blades.
• Storage Administrator. Responsible for configuration and management of several NetApp storage systems. Monitored for and analyzed faults, performance issues and over utilization.
• Provided 3rd level Exchange/O365 email support
• Datacenter Operations Team Lead. Managed the design and diagnosis of any and all infrastructure team disciplines.

Frankfurt Am Main, DE

• Rebadged from thyssenkrupp due to IT services outsourcing
• Microsoft Exchange SME. Independently managed 3 discrete business unit Microsoft Exchange Organizations totaling >6,000 mailboxes. Accountabilities included meeting stringent SLAs with email availability and timely.
• VMWare Administrator. Administered complex enterprise-level, multi-datacenter and multi-cluster vCenter environments. Configured, monitored, operated, and troubleshot all aspects to support ESXi 4.1, 5.0 and 5.1 hosts.
• Replaced legacy remote site servers with ESXi hosts
• Managed and monitored ESXi host server hardware including HP blades and Cisco UCS

Essen, DE

See T-Systems employment description for May 2015 to October 2015

Las Vegas, NV, US

• AD Administrator. Responsible for all aspects of the Active Directory infrastructure including Sites, Trusts, GPOs, as well as DNS, DHCP, WINS, and DFS maintenance, monitoring and responding
• Exchange Administrator. Maintained all messaging systems from the org level to daily operations..
• VMware vSphere administration and configuration in a large enterprise environment
• VMware ESX performance monitoring to resolve host and virtual machine issues
• Server (P2V) conversions and reconfigurations using VMware Converter
• Monitoring Administrator. Manage System Center Operations Manager environment

Peachtree Corners, Georgia, US

I was originally hired by Kemper Insurance that became Broadspire which was acquired by Crawford and Company. See my experiences at Crawford and Company for my position's details.

Peachtree Corners, Georgia, US

• Active Directory Enterprise / Domain Administrator
• Technical lead or primary member of many projects including domain consolidations and migrations, systems separation from divestiture, and systems integration from acquisition.
• Organized, planned and executed the integration an acquired company’s 80+ server infrastructure
• VMWare ESX and ESXi Server administrator
• Principal systems monitoring administrator
• Citrix administrator. Responsible for a 90+ published application, 50 server farm.

Bachelor Of Science, Computer Science/Cis

Education record