System Administrator, RHEL

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November 23

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DT Professional Services

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B2B • Government • SaaS

DT Professional Services is a company with over 50 years of cumulative experience in delivering technology services and solutions. Specializing in web and custom application development, mobile and cloud computing, project and program management, they provide cutting-edge, custom technology solutions to government agencies and commercial enterprises. Their services aim to maximize value, drive engagement, and improve business processes through process automation, decreasing errors, increasing speed, and boosting quality. DT Professional Services is client-centric, focusing on understanding clients' needs to tailor technology solutions that enhance efficiencies, optimize workflows, and increase revenues.

11 - 50 employees

Founded 2013

🤝 B2B

🏛️ Government

☁️ SaaS

📋 Description

• Provide maintenance, sustainment, installation, configuration, patching, troubleshooting, break-fix, data protection, and vulnerability remediation for RHEL 8 & 9 systems running in Azure Government Cloud across multiple US Gov regions • Scale and maintain RHEL environments, including deploying and upgrading virtual machines, supporting hybrid cloud configurations, and managing servers, clusters, highly available infrastructures, and RHEL endpoints • Support and administer critical services including LDAP, SYSLOG, DNS/BIND, JAVA, NTP, SMTP/Mail Relay, and RHEL patching • Maintain full DISA STIG compliance, complete STIG checklists, run SCAP/eVALUATE scans, identify vulnerabilities, and remediate findings • Maintain and administer Red Hat Satellite Server (or approved services) to manage updates, package distribution, and system configuration • Provision, configure, and maintain Azure Dedicated Hosts and Host Groups for hardware isolation supporting IL2, IL4, and IL5 workloads • Manage backup and disaster recovery solutions using Azure Backup, Recovery Services Vaults, snapshots, or approved services, ensuring compliance, application consistency, business continuity, and cost optimization • Configure and maintain Azure Hybrid Benefits for RHEL servers • Support RMF Steps 1–6 to meet ATO requirements and maintain system accreditation timelines • Ensure ongoing STIG compliance, routine patching execution, and security control monitoring aligned with SCCA requirements • Manage and update Plan of Action & Milestones (POA&Ms), ensuring vulnerabilities are tracked, mitigated, and resolved within required timeframes • Conduct continuous monitoring of systems following the approved System Level Continuous Monitoring (SLCM) strategy • Review ACAS scan results and update POA&Ms in accordance with DoD and DON standards • Maintain hardware/software inventory and system assessment documentation, updating annually or upon environmental changes

🎯 Requirements

• Active DoD Secret clearance or higher • 3–5+ years of experience administering RHEL 8/9 environments • Strong hands-on experience with Azure Government Cloud, Azure VMs, and Azure Dedicated Hosts • Experience with DoD cybersecurity requirements including DISA STIGs, SCAP, ACAS, and RMF activities • Proficiency managing RHEL services such as LDAP, SYSLOG, DNS/BIND, NTP, JAVA, and SMTP • Experience with backup technologies and disaster recovery in cloud environments • Familiarity with hybrid cloud architectures and highly available systems

🏖️ Benefits

• medical, dental, and vision coverage • life insurance • long & short-term disability • 401(k) retirement plans (with employer match) • tuition & certificate reimbursement • paid time off (vacation/sick/holidays)