IT Network Administrator
VG Recruiting Agency
Yerevan | Full time
Job Description
We are looking for an IT Network Administrator who will be responsible for the design, implementation, monitoring, and security of an organization's network infrastructure across on-premises, virtualized, and containerized environments. This role requires hands-on expertise with advanced network security solutions such as F5, Fortinet, Palo Alto along with a strong understanding of multi-tier architectures, and ISO/IEC 27001 security standards. The IT Network Administrator ensures high availability, scalability, and security of IT systems while supporting daily operations and strategic infrastructure projects.
Primary Responsibilities
- Setup, Configure and manage network infrastructure, including VLANs, subnets, routers, and firewalls.
- Troubleshoot network connectivity issues, including DNS, DHCP, IP routing, and VPN configurations.
- Administer and configure network security measures, such as firewalls and access control lists (ACLs).
- Monitor network performance and ensure availability using tools like Nagios, Prometheus, and Grafana.
- Implement network zoning and segmentation based on multi-tier application architecture.
- Conduct regular network assessments, vulnerability scans, and hardening activities.
- Maintain and optimize data center (DC) cabling, rack layouts, and physical network infrastructure.
- Document network infrastructure, configurations, and troubleshooting procedures.
- Maintain detailed documentation of system configurations, network diagrams, and policies.
- Collaborate with other teams (e.g., infrastructure admins) to ensure network performance is optimized.
Optional Responsibilities
- Participate in internal/external audits and risk assessments.
- Assist with load balancing, VPN setup, and advanced security audits.
- Implement network automation and configuration management using Ansible, Jenkins, or similar tools.
Required Skills
- Routing (static and dynamic routing protocols such as OSPF, EIGRP, BGP)
- Switching (VLANs, trunking, STP, RSTP)
- DNS, DHCP, IP Routing, VPNs (IPSec, SSL VPNs, MPLS)
- Subnetting and IP Addressing (IPv4, IPv6)
- Network Topology Design (LAN, WAN, VPN, SD-WAN)
- Routing (static and dynamic routing protocols such as OSPF, EIGRP, BGP)
- Firewall Management (e.g., Palo Alto, Fortinet, Cisco ASA)
- ACLs (Access Control Lists) and NAT (Network Address Translation)
- Intrusion Detection/Prevention Systems (IDS/IPS)
- Network Monitoring (Zabbix, Prometheus, Grafana)
- TCP/IP stack and OSI model understanding
- PowerShell, Python, Bash for automation
- Network Security (IPSec, SSL/TLS, RADIUS, TACACS+)
Optional Skills
- Wireshark, tcpdump, NetFlow for troubleshooting
- Network Automation (Ansible, Terraform, etc.)
- High Availability and Load Balancing (F5, HAProxy, Cisco ACI)
Contact information
Qualified candidates are welcome to apply for the job by following this link.
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