Allen Radcliff Email & Phone Number

Mclean, Va, Us

Responsible for systems engineering and administration of complex data processing systems, networks, and storage comprising of Red Hat/CentOS servers, Infiniband and 10Gig-E switching, as well as Data Direct, Promise VTrak, and Coraid storage. Provide systems architecting and design support as hardware reaches end-of-life and software requirements call for new solutions. Also monitor and tune systems, implement security recommendations as required for compliance and accreditation, set up and maintain network services (i.e. -- DNS, LDAP, NTP, E-mail, XMPP, Active Directory, etc.).

Arlington, Va, Us

Maintain several hundred servers and workstations across a heterogeneous environment, to include Red Hat Linux, Sun Solaris, HP Tru64 and HP-UX, and several Microsoft Windows platforms. Provide technical input into design, integration, and maintenance of VMware virtualized server environments and EMC Invista virtualized storage environment. Provide integration support to incoming system installations. Troubleshoot and resolve trouble calls and outages on high priority systems. Contribute to on-line collaborative knowledge base. Keep Windows platforms up-to-date with anti-virus and patch updates as per Security requirements.Built and implemented a highly available Postfix-based SMTP mail routing system.Deployed a redundant LDAP authentication system for Web-based applications.Contributed to development of Python-based Systems Administration tools.

Bethesda, Md, Us

Trained and supervised 18 systems administrators and desktop support representatives maintaining operational network of over 400 Solaris servers/workstations and 800 Windows servers/workstations. Provided Tier 2 technical support, documented helpdesk procedures, and ensured server availability within contract specifications. Evaluated new systems and upgrades for integration into site baseline. Supported government systems engineering and integration team and serve as onsite subject matter expert (SME) on architecture issues, including cluster and storage design. Provided data backup and disaster recovery. Created and updated user accounts. Reported project status and time utilization requirements to management.Developed baseline management utility to improve control of UNIX workstation software baselines.Designed and deployed highly available web server solution based on campus cluster.Configured SAN and storage devices and designed disaster recovery processes.Redesigned and rebuilt 8-node campus cluster as 4 2-node clusters for ease of maintenance.Key role on advisory board planning UNIX client upgrade to Sun Solaris 10.Configured Sendmail SMTP servers to provide enhanced mail routing.Developed Web-based PERL/CGI utility to track and predict disk space issues.

Arlington, Va, Us

Administered NeXT and Digital UNIX server and workstation network, providing user support, training, and hardware/network troubleshooting, diagnosis, and problem resolution. Configured and maintained Cisco routers, delivered network management, and backed up/restored data. Integral in working group separating/firewalling 2 secure networks.Assessed site impact and completed UNIX-to-Windows system migration.Earned Director's Tier III Coin for Windows file and mail sever upgrade.

Technology services firm with $76.5 million in revenue and 600 personnel.; Maintained Digital UNIX fileservers and 350 NeXT workstations. Installed and configured operating systems, software, hardware, and printers. Reviewed resource allocation to ensure full system functionality and trained systems administrators and helpdesk personnel.Hand-selected by management to set up network extensions at remote sites.Recognized for quality of performance and service.

Supervised network of Sun servers and 70 workstations. Administered system and network operations and delivered end-user technical support.