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Linux Administrator

Location : Chicago, IL
Job Type : Direct
Hours : Full Time
Required Years of Experience : 10+
Travel : No
Relocation : No

Job Description :
The Linux Administrator is responsible for the planning, design, implementation, securing, administration, organization, documentation, maintenance, and support of our new and existing highly available application and web infrastructures.




Primary Responsibilities




  • Plan, design, install, maintain and troubleshoot highly available Linux systems including development, staging, production and DR environments




  • Conduct Linux systems administration, including performance monitoring/tuning, capacity planning, data replication/synchronization, DR environment availability, Nessus and OpenSCAP security audits with a focus on security and maximum availability




  • Install, configure and manage security for Operating Systems including the deployment of firewalls, IDS/IPS




  • Manage and apply hardening standards for adopted baselines to ensure maximum protection for all environments




  • Deploy, configure, manage and support web-hosting environments, i.e. Apache, MS IIS and load balancers for production, staging, development and test environments while supporting development teams




  • Deploy JBoss and Tomcat environments




  • Administer and monitor SAN storage systems




  • Conduct research and development to drive innovation and propose new technology to improve production systems and their reliability, security, and availability




  • Create and maintain systems and procedures documentation




  • Maintain, update and configure performance monitoring system




  • Maintain, update and configure availability monitoring systems




  • Utilize project planning practices to focus and manage time, tasks and deliverables. Use Microsoft Project Plan to build and maintain projects and subsequently meet deadlines and produce quality deliverables on-time and within established budgets




  • Scripting experience in Bash/Shell




Required Qualifications :

Job Qualifications




  • 10+ years of relevant experience required




  • Degree preferred




  • Expert in Linux Administration i.e. RedHat




  • Experience working with RedHat Identity Management




  • Experience working in mid to large 24/7 environments with high availability and scalability requirements




  • Experience working with SSL and TLS configurations




  • Experience working with servers deployed on hypervisors




  • VMware familiarity and experience preferred




  • Strong skills in designing, deploying, maintaining and monitoring highly available and scalable environments with strong security and performance requirements for Linux; familiarity with Nagios a plus




  • Familiarity with Ansible configuration management or similar systems desired




  • Strong troubleshooting skills of Linux platforms




  • Strong working knowledge and troubleshooting skills for Apache, MS IIS and load balancing technologies




  • Solid knowledge of network protocols and troubleshooting skillsof TCP/IP, DNS, DHCP and SMTP




  • Experience using WireShark or other network sniffing technology




  • Strong knowledge of storage subsystems, RAID configurations, and their interaction with OS level




  • Knowledge of Java Application platforms such as JBoss and Tomcat




  • Working knowledge and administration of SAN Systems – Fujitsu, Nimble and Pure Storage a strong plus




  • Experience with Oracle 11g/12c in Linux environments a strong plus




  • Conduct research and development while exercising creative thinking and ideation to advance business systems performance and availability




  • Strong, proven experience in scripting using Bash/Shell and Python/Perl a plus.




  • Strong work ethic and the willingness and ability to work hours necessary to meet project deadlines required




  • Production experience with MS Windows Server 2008 and above desired




  • Provide support to other team members, development teams, coach junior staff




  • Provide 24/7 on-call production support




  • Good writing and communication skills a must




  • Ability to travel 5%




  • Must be able to work on-site in the Chicago Office




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