We are seeking a highly skilled Senior Network Engineer to design, secure, and support our enterprise network infrastructure. The ideal candidate brings strong expertise in Cisco technologies (NX-OS, IOS-XE, ASR), deep knowledge of routing and switching, hands-on experience with firewalls and wireless systems, and a solid understanding of network security and monitoring best practices.

Key Responsibilities:

• Design, deploy, and maintain core network infrastructure across switching, routing, firewalls, wireless, and WAN environments.
• Troubleshoot complex technical issues, perform root-cause analysis, and ensure high availability, resilience, and optimal performance.
• Implement and enforce network security controls including segmentation, firewall policies, VPNs, MFA/2FA, and L2/L3 security mechanisms.
• Manage and optimize wireless environments (Ruckus, Mikrotik, Ubiquiti).
• Maintain routing policies and high-availability technologies such as VPC, LACP, load balancing, VRF, etc.
• Operate, tune, and improve monitoring and observability systems (SNMP, telemetry, Prometheus, Grafana, Splunk, PRTG, Zabbix, SolarWinds).
• Produce clear technical documentation, network standards, and diagrams, and actively participate in knowledge sharing with the team.

Required Qualifications & Skills

• 3+ years of hands-on experience in network engineering or a similar technical role.
• Strong experience with Cisco NX-OS, IOS-XE, ASR, and Firepower appliances.
• Deep knowledge of L2/L3/L4 networking: VLANs, STP, ACLs, QoS, NAT, VRFs, VPC, EtherChannel/LACP.
• Hands-on experience with firewalls: Fortigate, Mikrotik, pfSense, OPNsense.
• Expert-level understanding of VPN and tunneling technologies: IPsec, WireGuard, OpenVPN, SSL-VPN, L2TP, PPTP, ZeroTier.
• Strong experience with routing protocols: OSPF, EIGRP, BGP.
• Experience with WAN, SD-WAN, load balancing, and other HA solutions.
• Fundamental knowledge of Linux administration.
• Wireless expertise with Ruckus, Mikrotik, Ubiquiti, etc.
• Understanding of MFA/2FA, access controls, and network security principles.
• Knowledge of VoIP performance requirements (jitter, latency, QoS).

Preferred Skills

• Network automation tools: Ansible, Terraform, Python.
• Understanding of HTTP/HTTPS, REST APIs, and general web communication concepts.
• Familiarity with PKI, certificates, and encryption.
• Experience integrating logs with SIEM tools.
• Understanding of microservices and container networking (Docker, Kubernetes).
• Exposure to ITIL or similar service-management frameworks.