- Supported datacenter environments with over 60,000 servers running Debian, RHEL, and Windows Server while also supporting a large variety of applications and services.
- Worked extensively in multisite datacenters with Linux and Windows Server operating systems, Apache, IIS, Active Directory, Oracle and Microsoft SQL database platforms, VMware ESX, Hyper-V, NetApp and EMC (Centera, Clarion, and Symmetrix) storage technologies, Cisco Unity/UCaas, Forefront for Endpoint Protection Server, Backup Execution Software, Cat-5/6 cabling, wireless controllers and access points, and CCTV camera installations.
- Extensive experience with network, application, and database security hardening practices in addition to a wide variety of hardware and software protection technologies.
- Extensive experience with vulnerability analysis and reporting.
- Installed, configured, and maintained Red Hat Enterprise Linux based servers (versions 2.1 - 7.0, including Oracle Enterprise Linux, CentOS, and Fedora).
- Extensive experience with Spacewalk and Red Hat Network Satellite systems management tool.
- Installed, configured, and maintained Debian Linux based servers (versions 0.91 - 7.0, including Ubuntu Advantage Server versions 4.10 - 14.04 LTS).
Extensive experience with Landscape systems management tool.
- Installed, configured, and maintained Apache web server farms with Adobe ColdFusion application server, java, perl, and php support.
- Installed, configured, and maintained IIS web server farms with ASP and PHP support.
- Installed, configured, and maintained samba file servers.
- Installed, configured, and maintained DNS servers utilizing Active Directory and bind.
- Real-time datacenter problem analysis utilizing HP OpenView, Nagios XI, and Microsoft System Center Suite 2007 (R2) / 2012 (R2) enterprise monitoring and management tools.
- Performed upgrades/migrations to hardware, operating systems, and applications with little to no downtime.
- Troubleshooted problems in Red Hat Enterprise Linux and Windows Server environments that affected customer deadlines and productivity.
- Provided backup and restore solutions and custom solutions based on customer request.
- Successfully resolved over 21,000 customer issues ranging from system failure and application problems affecting a large variety of customers.
- Completed over 12,000 hardware and software upgrades as requested and approved by the customer and organization’s change approval committee.
- Planned and executed OS patching activities.
- Planned, implemented, and maintained a complex Microsoft Exchange environment for over six million active users.
- Planned, implemented, and maintained a complex Microsoft SQL Server environment for large scale customer applications.
- Worked with applications developers and other engineers to create innovative solutions for unique customer problems.
- Troubleshooted software defects in dev, test, and production environments before, during, and after deployment.
- Worked with vendors to devise solutions and assist with installation, configuration, and troubleshooting of their software as needed.
- Maintained customer accounts and access to the enterprise.
- Worked with developers to safely load custom software onto Windows and Linux servers and enable debugging for further troubleshooting.
- Created comprehensive user documentation as well as training for both customers and support staff.
- Established port channel bonding on high available Windows and Linux servers for networking and failover of installed network interfaces.
- Responsible for various hardware and software acquisitions and implementations across the enterprise.
- Experience in the support of fundamental technologies such as DNS, SFTP and FTP, SMTP, SNMP, LDAP, SSL, SSH, TCP, UDP, IP, RAID, TFTP, BOOTP, DHCP, Kerberos, and SMB and CIFS.
- Responsible for the development and maintenance of web interfaces, load balancers, and backends between various systems.
- Responsible for compatibility across multiple platforms including integrating custom Linux systems and various Microsoft products.
- Developed a variety of applications and have played a role in all phases of development.
- Performed both remote and on site Oracle DBA, Oracle Application administrator, and system administration tasks.
- Tomcat server administration
- Weblogic server administration.
- IBM Websphere server administration.
- Oracle RAC administration.
- Oracle Identity Management administration.
- Worked extensively with multiple databases on Oracle, Microsoft SQL, and MySQL database platforms in both standalone and clustered environments.
- Earned a solid reputation for resolving complex issues and providing exceptional customer service.
- Working knowledge of TCP / IP, IP Management, BGP, OSPF, and RIP protocols.
- Extensive experience with Cisco, 3Com, and HP switching and routing technologies.
- Extensive experience with Cisco CSS and Zen load balancing technologies.
- Working knowledge of C, C++, HTML, Perl, php, and bash scripting.
- UNIX / Linux administrator since 1994!
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