Linux Administrator

Job Description Functional Responsibility:

• ·         Work as part of a team developing innovative solutions, providing subject matter expertise (SME) in the principles of redundancy, data integrity, security and recoverability.
• ·         Work as part of a team writing proposal documents describing innovative web application solutions that deliver excellent value for the customer.
• ·         Systems Configuration Management.   Implement and support robust system configuration management in a agile, cloud based system, supporting production and development systems.  Strong experience with tools such as Puppet, Subversion, Hudson/Jenkins, and Ansible.
• ·         Integrate and implement server solutions and server components such as web servers, application servers, database servers, authentication servers, core infrastructure services (Proxy, DNS, SSH, SMTP, etc), and others.   Work with cloud computing platform, including those similar to Amazon EC2 and VMware.
• ·         Implement and troubleshoot redundant application solutions using the LAMP architecture with requisite expertise in PHP, Apache, and MySQL.
• ·         Engineer solutions to meet customer requirements based on current and future server platforms, implement and support server/application load-testing.  Familiarity with tools including LoadRunner, J-Meter, Siege and Grinder.
• ·         Trouble-shoot hardware, software and network related problems. -Implement and administer archive and backup systems.
• ·         Monitor performance and system utilization and participate in activities related to growth analysis and capacity planning.
• ·         Monitor IT infrastructure, extend and revise Nagios system monitoring, and network security.
• ·         -Draft, update and follow best practices and standards documentation
• ·         Implement of FISMA IT Security Controls.  Work with Linux security tools, including mod_security, iptables, & Nessus scan engine. 
• ·         Provide on-call support advice and technical support to various users/clients regarding operational/applications issues. Follow up with customer upon receipt of problems and provide timely status reports until problem is resolved.
• ·         Stay current with relevant state-of-the-art technology, equipment, and/or systems. Evaluates new hardware and software technologies, and presents analysis and purchase recommendations to the administration team and to management.

Work Experience Minimum/General Experience:

• ·         Three to five years of systems/network administration experience having strong analytical skills. Solid foundation in working with various flavors of Unix/Linux operating systems operating in heterogeneous hardware platforms and in implementation of LAMP architecture and open source software.
• ·         Experience in Windows, MAC OSX, and other operating systems considered a plus.
• ·         Strong knowledge of administering various flavors of Linux especially Red Hat Enterprise/CentOS Linux Servers.
• ·         Experience with configuring, implementing, and troubleshooting redundant, high availability solutions using databases such as MySQL, Postgres, Oracle, and other Data Warehouse solutions.
• ·         Working knowledge of virtual environments (VMware) and data storage environments (SAN, NAS, GlusterFS)
• ·         Extensive software experience with Apache, PHP, Tomcat, Sendmail, LDAP, BIND, clustering (Varnish, Heartbeat), etc.
• ·         Automate tasks using scripting (Perl, Shell)
• ·         Performance tuning and monitoring
• ·         Application and OS Upgrading and patching
• ·         Backups and Recovery
• ·         Ability to work well with customers and in a cross-team environment
• ·         Excellent interpersonal and communication skills.   Must be able to communicate concepts to both technical and non-technical audiences.
• ·         Documentation processes and procedures.  Experience with ISO/CMMI processes preferred.