Linux And Network Administrator

Job Summary:

We are looking for a knowledgeable and proactive Linux System and Networking

Administrator with strong experience in virtualization (especially Proxmox and VMware

vCenter) and a deep understanding of enterprise networking. You will be responsible for

maintaining our Linux systems, managing virtualized environments, and ensuring robust and

secure network operations across the organization.

Key Responsibilities:

Linux System Administration

• Install, configure, and maintain Linux servers (Ubuntu, CentOS, RHEL) in physical

and virtual environments.

• Manage web, database, file, and directory services, including Apache/Nginx,

MySQL/PostgreSQL, Samba, and LDAP.

• Develop and maintain system automation scripts using Bash, Ansible, or similar

tools.

• Ensure system uptime, performance, and reliability through proactive monitoring

and maintenance.

Virtualization & Infrastructure Management

• Administer and maintain Proxmox VE and VMware vCenter/ESXi virtual

environments.

• Provision, clone, snapshot, and manage virtual machines and containers.
• Monitor and optimize virtual resource utilization (CPU, memory, storage).
• Assist in planning and implementing scalable, redundant virtualization

infrastructure.

Network Administration

• Design, configure, and manage LAN/WAN environments, including VLANs,

routing, trunking, and link aggregation.

• Administer and maintain firewalls (e.g., pfSense, iptables, FortiGate), VPNs, and

secure remote access solutions (OpenVPN, WireGuard).

• Monitor network performance and troubleshoot issues using tools like tcpdump,

Wireshark, and NetFlow.

• Maintain DNS, DHCP, NAT, and port forwarding rules in both physical and

virtualized networks.

Security and Compliance

• Harden Linux systems and network infrastructure based on best practices.
• Conduct periodic audits, patching, and updates for operating systems,

hypervisors, and firewalls.

• Implement and maintain intrusion detection/prevention systems (IDS/IPS) and

network access control.

Support & Documentation

• Provide tier 2/3 support for Linux, network, and virtualization-related issues.
• Document infrastructure, network diagrams, system configurations, and SOPs.
• Work closely with IT security, DevOps, and cloud teams to ensure a consistent

and secure infrastructure.

Requirements:

Experience

• 3+ years of experience in Linux system administration and networking.
• 3+ years experience managing Proxmox or VMware vCenter environments.

Technical Skills

• Proficient in Linux (RHEL, CentOS, Ubuntu).
• Hands-on experience with Proxmox VE, vSphere, and VMware vCenter.
• Deep understanding of networking fundamentals: TCP/IP, DNS, DHCP, VLANs,

routing protocols, and NAT.

• Experience configuring and managing firewalls and VPNs.
• Strong scripting and automation skills (Bash, Ansible, or Python).
• Familiar with monitoring/logging tools: Zabbix, Grafana, ELK, or similar.

Preferred Qualifications

• Certifications: RHCE, VCP, CCNA, CompTIA Network+, or equivalent.
• Experience with SDN, high availability setups, and network segmentation.
• Familiarity with hybrid cloud infrastructure or on-premises to cloud migrations.

Soft Skills

• Strong analytical and troubleshooting skills.
• Ability to work independently and under pressure.
• Good communication and documentation abilities.
• Willingness to participate in an on-call rotation.