Linux Systems Administrator
Columbus Technologies and Services - Greenbelt, MD

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The System Administrator (SA) will support the Earth Observing System Data and Information System (EOSDIS) Evolution and Development (EED) contract.

SA will be responsible for effective provisioning, installation/configuration, operation, and maintenance of systems hardware, application software and related infrastructure. This individual participates in technical research and development to enable continuing innovation within the EED environment. This individual ensures that system hardware, operating systems, software systems, application software and related procedures adhere to EED and NASA standards and policies.

SA will participate in all phases of development and deployment. These activities include the definition of needs, benefits, and technical strategy; research & development within the project life-cycle; technical analysis and design; and support of development and operations staff in executing, testing and rolling-out the solutions. Participation also involves the transition of software from development to production by performing deployment activities within the project life-cycle.

Specific duties and responsibilities include:

Install new / rebuild existing servers and configure hardware, peripherals, services, settings, directories, storage, etc. in accordance with standards and project/operational requirements
Develop and maintain installation, configuration and security procedures
Research and recommend innovative and, where possible, automated approaches for system administration tasks. Identify approaches that leverage our resources and provide economies of scale.
Perform daily system monitoring, verifying the integrity and availability of all hardware, server resources, systems and key processes, reviewing system and application logs, and verifying completion of scheduled jobs such as backups.
Perform daily backup operations, ensuring all required file systems and system data are successfully backed up to the appropriate media, recovery tapes or disks are created, and media is recycled and sent off site as necessary.
Repair and recover from hardware or software failures. Coordinate and communicate with impacted constituencies.
Apply OS/application patches and upgrades on a regular basis, and upgrade administrative tools and utilities. Configure / add new services as necessary.
Perform ongoing performance system and application tuning, hardware upgrades, and resource optimization as required. Configure CPU, memory, and disk partitions as required.
Provide 24/7 administration support of operational system for urgent/emergency response

Required Skills

Must have a BS degree in a technical major, such as engineering or computer science
Must have a minimum of 4+ years of experience as a Linux system administrator
Must have knowledge of TCP/IP networking and security technologies and services such as HP ProCurve, Cisco IOS, Juniper JunOS, OpenLDAP, OpenSSL, KerberosV, RADIUS, and SSH
Must have knowledge of Apache, DBMS (Oracle or PostgreSQL), and Java application server technologies
Must have knowledge of storage volume management and filesystems
Must have strong ability to automate tasks using scripting languages (Shell, PERL, etc)
Must have proven understanding of high availability, data/system replication, and disaster recovery methodologies in the system and database spaces

Desired Skills:

Certification in Red Hat Enterprise (RHCE) or Oracle Enterprise Linux (Linux Administrator OCA). RHCE is preferred
Experience supporting software development teams, tools, and processes a plus

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