Senior Linux Server Administrator

Position Description : The Linux System Administrator is responsible for applying Red Hat Enterprise Linux (RHEL), Ubuntu, CentOS, Suse and Debian concepts and industry best practices to resolve complex issues, provide daily operational management of private and public cloud Linux server instances, maintaining thorough documentation of procedures and system configurations, selecting methods and techniques to obtain solutions, evaluating technologies, performing cost / benefit analysis, and completing additional work assigned by the manager and lead. The position requires system administration experience along with the skill to administer various distributions and open-source applications of the Linux operating system; works closely with other System Administrators, Application Engineers, Developers, Cyber Security professionals, Systems Engineers, and Operations specialists to provide top-quality secure computing and storage services to a variety of county customers. The Linux System Administrator is responsible to develop and manage the county's computing and infrastructure systems on private and public cloud environments (AWS, Azure, GCP). Provide creative problem solving, critical thinking, and advanced troubleshooting across a broad domain of secure computing systems and support activities. Manage data center computing operations while maintaining strict operational security requirements and directives - implement latest computer security policies and procedures. The Linux System Administrator is responsible to manage availability of network, storage, computing, and software of multiple computing and storage systems. Develop technical specifications and maintain documentation for processes and technical guides. Patch planning, vulnerability assessment, patch policy preparation, patch testing and workflow design for quarterly security patch updates across RHEL, Ubuntu, CentOS, Suse and Debian Linux systems. Research and resolve operating system problems efficiently and accurately, while adhering to organizational standards and practices. Perform proactive performance monitoring, analysis, alerting, reporting, and tuning as well as proactive capacity planning / analysis and provisioning solutions. Coordinate, facilitate, manage, and execute approved changes during maintenance windows in a 24 × 7 on-call environments.

Skills Required : The Linux System Administrator will possess knowledge in decision making; organizational awareness; and problem-solving skills.

Skills Preferred : 1. Three (3) years of working experience within the last five (5) years configurating, administrating, and maintaining : a. Oracle Security Suite (i.e., OAM, OIM, OUD). Working knowledge of Microsoft / Azure Active Directory (AD) and implementation of data sync / recon jobs between OIM / OUD and AD. b. Oracle Fusion Middleware (FMW) 12c products (e.g., WebLogic, OHS, WCP, WCC, SOA, OSB, BPM). c. Hands-on administration experience of Oracle Enterprise Manager (OEM) and familiar with different management tools (e.g., OMC, OCI O&M) in the Oracle Cloud Infrastructure (OCI) environment. d. Experience with Java and Shell scripting. e. Experience with Red Hat Enterprise Linux and Oracle Linux. f. Experience installing, configuring, and managing virtual machine (VM) servers 2. Three (3) years of working experience within the last five (5) years, supporting and maintaining an Oracle infrastructure that serves over 1,500 users requiring access to mission critical business applications. 3. Two (2) years of working experience within the last three (3) years, configurating networking servers (e.g., DNS, Load Balancer, Forwarder, Web Application Firewall) to support enterprise systems. Working experience in configurating SSL Certificates. 4. Three (3) years of experience, within the last five (5) years, configuring and maintaining Oracle Products on Oracle Linux platform and / or Oracle Bare Machine platform. 5. Familiar with Oracle Cloud Infrastructure (OCI) and on-premises Mainframe / Windows / Linux environments.

Experience Required : This classification requires a minimum of seven (7) years of experience in Red Hat Enterprise Linux, CentOS, Ubuntu, Suse, Debian Linux. Four (4) years of experience in developing Ansible playbooks, Shell, and Python scripts. Ability to author and implement automation for complex operational and administrative tasks. Experience with security tools and threat mitigation technologies such as McAfee, CISCO AMP, Nessus Tenable, Tanium, and Dell Secureworks Red Cloak. Experience with VMware, Vcenter, and ESXi.

Experience Preferred :

Education Required : This classification requires the possession of a bachelor's degree in an IT-related or Engineering field. Additional qualifying experience may be substituted for the required education on a year for-year basis.

Education Preferred :

Additional Information : Live Scan Required. Consultant may need to work after work hours, holidays, or weekends. Advanced notice will be given.