Job Description

A large government client of ours is seeking an experienced System Administrator to join their dynamic team. Primary Responsibilities: * Monitor and maintain an enterprise services environment consisting of Windows servers, Red Hat Enterprise Linux servers, and network appliances. * Assist mission partners with mobile device VPN connectivity debugging, user account and device management, and troubleshooting system/service access issues. * Perform configuration updates and maintenance activities to patch, secure, and maintain systems. * Respond to, and help analyze, issues that degrade system or network performance to minimize downtime. * Address moderately complex technical issues using internal SOPs and collaboration with team members. * Help create and update documentation for common issues and processes to contribute to the team's knowledge base. * Provide input on ways to optimize processes and improve the efficiency of the environment. * Support occasional after hours maintenance and be available for 2-hour onsite call back support for critical issues. Basic Qualifications: * Bachelor's degree and 2 years of related experience or Master's degree with less than 2 years of related experience. Additional experience, education and training may be considered in lieu of degree. * Active DoD SECRET clearance. * DoD-8570 IAT Level 2 certification (Security CE) within 6 months of hire date. * Experience troubleshooting issues with software applications, networking, Windows OS or Linux OS. * Experience performing system administration tasks - installing, maintaining, monitoring, recovering, rebuilding, upgrading, patching. * Experience researching technical solutions beyond internal SOPs. * Willingness to work with multiple technologies and be open to learning new technologies. * Motivated self-starter with strong work ethic and ability to work with minimal supervision in the fulfillment of daily operations and sustainment activities. * Ability to demonstrate good judgement, professionalism, and communicate clearly (verbal and written). * Strong problem solving, critical thinking, and analytical skills. Desired Qualifications (not required, but a huge plus): * Experience configuring and maintaining network devices - switches, routers, firewalls, VPNs. * Experience with scripting or automation tools. * Experience with VMWare - ESX/ESXi, vCenter, vSphere. * Experience with AD, SCCM, SQL, MySQL, SELinux, DNS. * Knowledge of networking concepts such as OSI Model, LAN/WAN, IPv4/IPv6, subnetting and VLANs. * Experience maintaining systems and services in an air-gapped environment. * Knowledge of security policies such as DISA STIGS and general vulnerabilities management. * Certifications with major system vendors such as Microsoft, Red Hat, VMware, Cisco, Juniper, or Aruba #CJJOBS Marathon TS is committed to the development of a creative, diverse and inclusive work environment. In order to provide equal employment and advancement opportunities to all individuals, employment decisions at Marathon TS will be based on merit, qualifications, and abilities. Marathon TS does not discriminate against any person because of race, color, creed, religion, sex, national origin, disability, age or any other characteristic protected by law (referred to as "protected status ").

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