Senior Systems and Network Administrator

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 ).
• 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 ).
• Familiarity with securing systems using firewalld (RHEL) or Windows Firewall .
• Understanding of user and group management and access controls (e.g., LDAP , Kerberos , Active Directory ).
• Understanding of securing remote access using SSH for Linux and RDP / WinRM for Windows.
• Experience with PKI management.
• Problem-Solving Skills :
• Strong troubleshooting skills for both Linux and Windows environments, diagnosing network issues, hardware failures, and service outages.
• Ability to analyze and resolve connectivity issues in a multi-platform environment (Linux + Windows).
• Proven ability to identify the appropriate method and conduct testing to ensure complex technical solutions will work as expected in production.
• Automation & Scripting :
• Experience writing basic Bash, PowerShell or Python scripts to automate routine tasks.
• Basic understanding of automation tools like Ansible , Packer and Terraform .
• Soft Skills :
• Excellent communication skills for documenting network and system configurations, troubleshooting guides, and policies.
• Ability to collaborate effectively with different teams (Software Factory, Information Assurance, Development Teams, etc.).
• Ability to mentor junior system / network administrators and provide technical leadership.
• Ability to help manage tasks and priorities for a small team.
• Experience :
• 8-10 years of hands-on experience with system and network administration.

Preferred Job Qualifications :