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Senior Systems and Network Administrator

Senior Systems and Network Administrator

Davis Strategic Innovations, IncNewport News, VA, US
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Job Description

Job Description

Systems and Network Administrator

Basic Job Qualifications :

  • Education :

Bachelor's degree in Computer Science, Information Technology, or a related field (or equivalent practical experience).

  • Certifications like CompTIA Network+ , Microsoft Certified : Windows Server Fundamentals , or RHCSA (Red Hat Certified System Administrator).
  • Core Technical Skills :

    • Systems Administration (RHEL and Windows) :

    RHEL (Red Hat Enterprise Linux) :

    Experience administering RHEL-based systems (e.g., RHEL 8 / 9 , Fedora ).

  • Command-line proficiency in Bash scripting and using tools like YUM / DNF for package management.
  • Configuration and management of RHEL services (e.g., Systemd , Apache , Nginx , PostgreSQL , MySQL , LDAP ).
  • Knowledge of SELinux , firewalld , and security management.
  • Windows Server :

    • Experience administering Windows Server environments (e.g., Windows Server 2022 ).

  • Active Directory (AD) management, Group Policy, DNS, DHCP, and IIS (Internet Information Services).
  • Familiarity with PowerShell scripting for automation.
  • Experience with Windows file systems , backups, and restoration.
  • Networking :

    • Understanding of IP addressing , subnetting , VLANs , VRFs , routing , and switching .

  • Configuration of network devices like routers, switches, firewalls, and VPNs.
  • Experience with TCP / IP , DNS , DHCP , and NTP protocols.
  • Basic knowledge of network monitoring tools (e.g., ping , traceroute , netstat , Wireshark ).
  • Experience configuring network interfaces, firewalls, and routing tables on both RHEL and Windows environments.
  • Virtualization and Infrastructure :

    • Experience with virtualization technologies (e.g., VMware vSphere , Hyper-V , or KVM ).

  • Familiarity with containerization technologies like Docker and Kubernetes for Linux-based environments.
  • Storage :

    • Experience with XFS Network Attached Storage (NAS) configuration and maintenance (e.g. TrueNAS).

  • Experience with administering a NAS in a Virtualized environment.
  • Security Basics :

    • Knowledge of basic network and system security practices (e.g., firewalls , VPNs , user authentication ).

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