Mark D. Email & Phone Number

• IT Systems Administrator teaming with cross-functional teams to plan, deploy and maintain the overall infrastructure and daily operations to ensure the stable operation of the company business for providing year-round tax services.• Manage and support vSphere ESXi 6.5 and 6.7 environments across multiple company Data Center locations.• Install, configure, and maintain the Windows 2012, 2016, and 2019 Server environments across the Crosslink enterprise.• Administer the maintenance, development and evaluation of all server SAN storage including Tegile, HP Nimble, Synology, and NetApp environments.• Oversee the daily operation and maintenance of all on-site and off-site backup systems using VEEAM Backup and Replication.• Maintain and direct all activities to resolve both hardware and software installation, configuration and issues compliant with the business's internal and external service agreements.• Evaluate server and storage performance and present statistics and reports to business stake holders• Develop, monitor and enforce IT policies and procedures

Pleasanton, Ca

• Spearheaded end-to-end implementation and system administration functions, as well as analyzed prevalent and future business needs to facilitate informed decision making by collaborating with internal/external clients.• Governed full-scope completion of projects, including migration of primary data center and server upgrades; liaised with global teams and external vendors for project planning, testing, implementation, and network designs.• Guided and led implementation teams through network configuration, Linux/Microsoft O/S server patches, and installations.• Drove level III troubleshooting functions and conducted problem analysis resolution of hardware/software issues, reviewed statistics, system logs, coordination of technology research, installation, program and configuration modifications.• Validated the Return to Operation (RTO) objectives aligned with the established policies and procedures for data recovery on a semi-annual basis.• Directed IT and CRM engineers on subjects spanning incident and problem management, service-level management, critical business process planning, and execution to ensure CRM applications were available in accordance with agreed time-frames and standards.• Enhanced the security level of Data Centers, and developed/conveyed strategic plans to maintain warranted high IT Support service standards as a primary objective.• Instituted coordination of technology installation by conferring with IT Change Control Board and business continuity technical team.• Performed maintenance/backups of file server operations, oversaw capacity planning, performance assessment, as well as managed networking DNS, DHCP, TCP/IP, Antivirus, system monitoring, and traffic analysis in the corporate production environment that contributed to 99.999% uptime yearly.• Standardized the crisis management approach for Disaster Recovery Planning/Response/Restoration by leveraging continuous-improvement methodology across nationwide Data Centers.