Senior Systems Administrator
ManTech Int'l Corp. - Fort Lee, VA

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Become an integral part of a diverse team that leads the world in Mission, Cyber and Technology Solutions. At ManTech International Corporation, you will help protect our national security while working on innovative projects that offer opportunities for advancement.

As a System Administrator (SA) you will be responsible for effective provisioning, installation/ configuration, operation, and maintenance of systems hardware and software and the related infrastructure. You will be asked to participate in technical research and development to enable continuing innovation within the infrastructure and ensure that system hardware, operating systems, software systems, and related procedures adhere to organizational values. You will also assist project teams with technical issues in the initiation and planning phases of our standard Project Management Methodology. These activities include the definition of needs, benefits, and technical strategy; research and development within the project life-cycle; technical analysis and design; and support of operations staff in executing, testing, and rolling out the solutions.

Primary Responsibilities:
  • Manage a 24/7 multi-tier Linux and HP-UX application delivery environment.
  • Linux and HP-UX administration, performance tuning, monitoring, maintaining fault tolerance, and account management.
  • NetApp storage administration and backup.
  • Proactive monitoring of server systems.
  • Disaster Recovery management and testing.
  • Participates in the development of policies, procedures, and resources that standardize the functioning of the infrastructure.
  • Develop information security requirements, guidance, and standards. T
  • Troubleshoot hardware, operating system, and application software problems.
  • Provide escalation support to other system administrators.
  • On-call rotation as needed.
  • Participates in the development of policies, procedures, and resources that standardize the functioning of the IT infrastructure.
  • Perform patching on Red Hat and HP-UX systems.
  • Development of information security requirements, guidance and standards.
  • Able to identify hardware problems and schedule maintenance.
  • Perform kernel upgrades.
Requirements:
  • In-depth knowledge (5-7 years) of Linux (Debian and/or Redhat); HP-UX administration and multi-tier application production operations.
  • Experience with Linux and HP-UX performance monitoring, tuning, troubleshooting, and security hardening.
  • Strong knowledge of Apache, Tomcat, Java, SMTP, DHCP, LDAP, Postfix, BIND, SNMP, load balancers, network printers, and Linux system security.
  • Strong scripting (Shell, PHP, or Perl) skills a must.
  • EMC storage experience a plus.
  • Replication and clustering highly preferred.
  • Working knowledge of VMWare vSphere 4 and 5 environments.
  • Demonstrated strong analytical and troubleshooting skills.
  • Demonstrated ability to work effectively with a team of senior system administrators.
Qualifications Requires Bachelor’s degree (in Computer Science or related field) or equivalent, and five to seven years of related experience. Additional Qualifications • U.S. Citizenship required.
  • In-depth knowledge (5-7 years) of Linux (Debian and/or Redhat); HP-UX administration and multi-tier application production operations.
  • Experience with Linux and HP-UX performance monitoring, tuning, troubleshooting, and security hardening.
  • Strong knowledge of Apache, Tomcat, Java, SMTP, DHCP, LDAP, Postfix, BIND, SNMP, load balancers, network printers, and Linux system security.
  • Strong scripting (Shell, PHP, or Perl) skills a must.
  • EMC storage experience a plus.
  • Replication and clustering highly preferred.
  • Working knowledge of VMWare vSphere 4 and 5 environments.
  • Demonstrated strong analytical and troubleshooting skills.
  • Demonstrated ability to work effectively with a team of senior system administrators Degrees Equivalent Experience/Education
Bachelor's Degree Years of Experience 11-13 years w/High School Diploma
05-07 years w/Bachelors Degree
02-04 years w/Masters Degree Position Type FT Date Required 15-Nov-2012

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