David Klostermann Email & Phone Number

Dallas, Tx, Us

San Diego, California, Us

Denver, Colorado, Us

Denver, Colorado, Us

Denver, Colorado, Us

Denver, Colorado, Us

-Upgraded Active Directory domain to Server 2012 R2 functional level -Upgraded all servers to Server 2012 R2-Upgraded SQL Server to 2014-Implemented PCI Security Controls (HIDs, VPN/MFA, Vulnerability Scanning, SSL Settings)-Setup Splunk for Server Logs and Security reporting.-Created Powershell scripts to automate daily tasks as well as development release process.

Arlington, Virginia, Us

Arlington, Va, Us

• Designed, built, configured, and maintained 3 development environments with a mix of VMWare, physical servers, and workstations.• Installed and configured Nagios Core monitoring for two development environments and a test environment.• Installed and configured Windows Server 2008 R2, Windows 7, and Red Hat Enterprise Linux 6.x.• Researches FOSS as alternatives to COTS and determines if they are suitable and cost effective. • Works with software developers, system engineers, and program management to create a system ready to be delivered to the U.S. Government. • Created and maintains an Active Directory domain, including users and groups, DFS shares, and Group Policies. • Works with Raytheon and Government Security personnel to ensure all software vulnerabilities are identified and mitigated and only approved software makes it into the system. • Installed and configured JIRA Issue and Bug Tracker software and database. • Runs day to day maintenance on Oracle 11G databases, including creating and removing user accounts and starting and stopping the database and listeners. • Schedules and maintain system backups using Windows System Backups and Arconis Backup and Recovery.• Attend Daily scrums to work with developers and meet their system needs.• Setup program Wiki for team collaboration and presenting information to customers, including a MySQL DB, IIS Server, and PHP.

Bethesda, Md, Us

•Operated multiple Information Systems in support of multiple US Military Commands.•Provided quality control, maintained message accountability, and took corrective actions on message traffic.•Operated secure circuits that use various cryptographic equipment, modems, multiplexers, and patch panels which provides essential data to Information Systems.•Initiated circuit restoration actions that included opening trouble tickets, troubleshooting circuit outages with the distant end, and coordinated restoration actions with internal and external maintenance support.

Washington, Dc, Us

System and Network Administrator