Senior IT System Administrator - Contingent with Security Clearance

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Senior IT System Administrator - Contingent ARES Enterprise Senior IT System Administrator - Contingent Redstone Arsenal, AL - Aberdeen Proving Ground, MD Job Type Full-time Description At Ares Enterprise, we deliver cutting-edge IT, cybersecurity, and mission assurance solutions to support our nation’s defense operations. We are looking for a dedicated System Administrator to join our elite technical team supporting critical Department of Defense (DoD) command and intelligence communication systems.

We are seeking an experienced Senior IT System Admin Certified Professional to form the core technical support team for day-to-day administration, maintenance, and security of a secure, mission-critical enterprise operating environment. In this role, you will ensure seamless system availability, robust cybersecurity posture, and high-quality technical support for operational users. Requirements Key Responsibilities

• System & Network Administration: Perform daily system administration tasks on Windows and/or Linux servers, including user account management, patching, and applying Security Technical Implementation Guides (STIGs). Manage and troubleshoot network infrastructure devices such as switches, routers, and firewalls.
• User & VTC Support: Provide direct Tier 1 and Tier 2 support to end-users for technical issues, including Video Teleconference (VTC) setup and troubleshooting, account resets, and software support. Escalate complex issues to senior specialists or external vendors as needed.
• Security Operations: Monitor security logs, respond to alerts, and assist with incident response, vulnerability remediation, and COMSEC compliance activities. Ensure systems are backed up and that disaster recovery plans are thoroughly tested.
• Technical Execution: Provide skilled technical support across all operational performance areas as assigned, adapting seamlessly to emerging technologies and requirements. 

Required Qualifications & Technical Skills

• Experience: Minimum of 5+ years of relevant IT experience in a complex enterprise environment, adhering to ITES-3S labor category standards.
• Certifications: Must possess at a minimum a current IAT Level II industry-standard certification (e.g., CompTIA Security+, CCNA, RHCSA, MCSA) meeting DoD 8570/8140 requirements.
• Technical Skills:
• Proven hands-on skills in network and system administration (Windows/Linux).
• Comprehensive hardware, software, and network troubleshooting abilities.
• Familiarity with COMSEC procedures, device management, and secure environment protocols.
• Strong customer support background within a secure, classified environment.
• Security Clearance: Must possess and maintain an active Top Secret security clearance with SCI eligibility By clicking “Accept All Cookies”, you agree to the storing of cookies on your device to enhance site navigation, analyze site usage, and assist in our marketing efforts. Cookies Settings Accept All Cookies Privacy Preference Center When you visit any website, it may store or retrieve information on your browser, mostly in the form of cookies. This information might be about you, your preferences or your device and is mostly used to make the site work as you expect it to. The information does not usually directly identify you, but it can give you a more personalized web experience. Because we respect your right to privacy, you can choose not to allow some types of cookies. Click on the different category headings to find out more and change our default settings. However, blocking some types of cookies may impact your experience of the site and the services we are able to offer. More information

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