On-orbit Servicing, Assembly, and Manufacturing 1 projectMaintain and administer Redhat, CentOS, Ubuntu, and Windows workstations, servers and virtual servers for the OSAM-1· Integration and Testing team on a 24x7 schedule as a member of a team of Systems Administrators.· Support the integration and test of all OSAM-1 hardware systems. Support the development of the OSAM-1 I\&T IT infrastructure. Work with the OSAM-1 ground element IT infrastructure engineers to establish infrastructure that meets the needs of both sides of the OSAM-1 program.Perform senior-level Windows, Mac, and/or Linux/Unix system administration including troubleshooting, fault isolation, system tuning, software installation, and maintenance. Identify and implement system and process-level improvements including providing recommendations to purchase and then implementing hardware and software solutions. Patch, upgrade, and configure software and operating systems to comply with GSFC IT security policies. Install application software and computer hardware. Diagnose and resolve computer and networking issues for local and remote users. Automate routine administration processes to improve efficiency. Maintain the operational environments once they have been established.

Same as above (contract change)Unix system administrator for OSAM-1 I&T

Solar Dynamics Observatory projectMaintain and administer 80 Redhat and CentOS Unix workstations,· servers, and virtual servers, and 12 Windows servers and workstations, on a 24x7 schedule as a member of a team of Systems Administrators. Evaluate and apply operating system patches; apply and enforce security and Symantec virus-prevention procedures; maintain and adjust TCP/IP routing rules to both provide and prevent communications; maintain and configure Cobbler, Puppet, and Ansible software for building and configuring servers; configure and maintain Nagios software to monitor servers and services and to alert appropriate staff members of failures and potential outages; install, schedule, maintain, and test server backups; system-level programming in perl and shell scripts; and perform general system maintenance

Maintain and administer 70 Solaris workstations and servers on a 24x7 schedule as a member of a team of Systems Administrators. Evaluate and apply operating system patches; apply and enforce security· procedures; maintain and adjust TCP/IP routing rules to both provide and prevent communications; coordinate with remote personnel for system maintenance; update and maintain ClamAV virus-protection software; system-level programming in expect, perl, and shell scripts; and perform general system maintenance.

Oversee and direct the Technical Operations department. Maintain and administer 20 Redhat and Ubuntu Unix workstations and servers,· 10 VMWare ESXi servers running 22 virtual Unix and Windows servers, 2 Solaris servers, and 6 Amazon EC2 virtual servers on a 24x7 schedule.Evaluate and apply operating system patches; maintain and adjust TCP/IP routing rules; install, configure, and update Apache HTTP server and Apache Tomcat software; manage DNS, NFS, FTP, NNTP, NTP to ensure customer access and business continuity; install, configure, and maintain Nagios software to monitor servers and services and to alert appropriate staff members of failures and problems; install, schedule, maintain, and test server backups; system-level programming in C, perl, and shell scripts; and perform general system maintenance.Maintain and administer Cisco and Extreme networking hardware and software. Configure and maintain network routers and firewalls to allow and prevent external access to servers and services. Develop, maintain, and update PHP customer-facing software and perl back-end software for acquiring and presenting data. Provide customer service and support via e-mail and telephone.Maintain and administer employee Windows desktop machines, corporate servers, and VMWare virtual servers. Maintain corporate services, including internal DNS, internal and external Web services, corporate e-mail, employee Internet and VPN access, corporate Great Plains accounting server, backups, and VoIP telephone service.

Install, maintain and administer numerous Slackware and Ubuntu Linux, HP/UX, and Solaris· servers on a 24x7 schedule. Diagnose, schedule, and execute on-site server hardware upgrades and repairs; evaluate and apply operating system patches; create, maintain, and support developer environments; maintain and adjust TCP/IP routing rules; manage DNS, NFS, FTP, NTP, TFTP, BOOTP, and other services; install, schedule, maintain, and test server backups; system-level programming in C, perl, and shell scripts; and perform general system maintenance.Implement, maintain and administer corporate services, including internal DNS, DHCP, internal and external· Web services, employee e-mail, corporate Internet access,· employee and customer dial-up PPP connections, and employee VPN access. Assisted in creating and implementing security precautions for SAS-70 compliance.