Que Technology Group, Inc., is seeking an experienced System Administrator to provide hands-on administration, maintenance, and troubleshooting support for mission-critical IT systems operating within secure and classified environments.
This role is responsible for maintaining reliable and secure Linux and Windows infrastructure, supporting core enclave services, and resolving technical issues from the operating system through the application layer. The ideal candidate will bring strong Linux administration experience, a solid understanding of networking, virtualization, storage, and security, and the ability to support complex operational environments. This position requires a proactive administrator who can independently diagnose issues, maintain system compliance, and ensure infrastructure availability and performance.
Responsibilities include, but are not limited to:
• System Administration & Troubleshooting: Administer, maintain, and troubleshoot Linux and Windows systems, diagnosing and resolving technical issues ranging from the operating system through the application layer.
• Linux Server Administration: Install, configure, patch, upgrade, secure, and maintain Linux servers, including RHEL, Rocky Linux, CentOS, or comparable enterprise Linux distributions.
• Core Infrastructure Services: Configure and maintain core enclave infrastructure services, including DHCP, DNS, domain services, identity management, authentication, and related network services.
• Virtualization & Infrastructure Support: Deploy and support virtualized and/or containerized environments while managing supporting infrastructure, including compute, storage, networking, and system resources.
• Network & Storage Administration: Support storage platforms, network connectivity, system interfaces, and associated infrastructure; troubleshoot performance, availability, and connectivity issues across complex environments.
• Security & Compliance: Maintain systems in accordance with applicable System Security Plans (SSPs) and secure administration requirements, including Secure the Enterprise (STE)/Secure the Network (STN) activities. Configure, monitor, and maintain security tools required to support DoD networks and cybersecurity requirements.
• Classified Environment Support: Provide day-to-day administration and technical support within classified operational environments, maintaining secure and reliable mixed Linux/Windows environments while ensuring systems remain operational, compliant, and mission ready.
Required Qualifications
• Ten (10) years of experience as a System Administrator supporting programs and contracts of similar scope, type, and complexity.
• Bachelor's degree in a technical discipline from an accredited college or university.
• Five (5) additional years of System Administration experience may be substituted for the bachelor's degree.
Desired Skills
• Experience administering or supporting AWS cloud environments.
• Experience with virtualization platforms such as KVM, Proxmox, VMware, or similar technologies.
• Experience with enterprise identity and authentication technologies such as FreeIPA, Centrify, LDAP, and Active Directory.
• Knowledge of PKI, TLS, certificates, encryption, and other cryptographic technologies.
• Experience with container technologies such as Docker, Podman, Kubernetes, or comparable platforms.
• Familiarity with automation and configuration management tools such as Ansible, Bash, Python, or PowerShell.
• Strong understanding of TCP/IP networking, DNS, routing, firewalls, system hardening, and secure network architecture.
• Ability to independently troubleshoot complex infrastructure issues, identify root causes, and implement sustainable technical solutions.
Security Clearance:
• Active TS/SCI with Polygraph required.
BENEFITS:
• Competitive salary
• Company Medical/Dental/Vision plans – Company paid
• Short-term Disability, Long-term disability and Life Insurance – Company paid
• Business/ First Class travel upgrade for 7 hour or longer flights & company card will be provided for expenses
• Vacation / Personal days granted at 25 days per year
• Paid Federal Holidays – 11 days
• $5,000 Annual Professional Development Fund plus 40 paid hours if in class
• 401K with 6% company match; all contributions are immediately vested by Employee
• Employee will be paid a bonus of $10,000 per employee hired based on their referral
• Up to 3 paid Code Red days due to customer closure
Que Technology Group, Inc., is an equal opportunity employer, and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity or expression, pregnancy, age, national origin, disability status, genetic information, protected veteran status, or any other characteristic protected by law.