Senior Network Administrator

LNH; Karachi Division; On-site; PKR 1,800,000 - 3,000,000; Full time

Job summary

LNH in Karachi seeks an experienced Senior Network Engineer to design, implement, and manage enterprise networks across LAN/WAN, MPLS, and data centers.

You will work with multi-vendor gear (Cisco, Huawei), run SolarWinds/PRTG monitoring, and ensure high availability, security, and documentation.

Qualifications

• Bachelor’s or Master’s degree in IT/CS from a recognized institution.
• Minimum 5 years of hands-on enterprise network administration experience.
• Strong expertise in routing, switching, firewall security, and high-availability architectures.
• Experience with core and distribution switches in multi-vendor environments (Cisco and Huawei).
• Hands-on with SolarWinds and PRTG for monitoring and fault detection.
• CCNA and CCNP certifications required; security or wireless certs are a plus.
• Excellent communication and thorough documentation abilities.

Responsibilities

• Install, configure, upgrade, and monitor enterprise network devices.
• Design and manage Layer-2 and Layer-3 networks, including VLANs, ACLs, STP/RSTP, QoS, and routing.
• Manage traffic flow across access, distribution, and core layers for low latency and fault tolerance.
• Troubleshoot complex network issues such as routing loops and bottlenecks.
• Configure and manage firewalls (Cisco ASA, FortiGate, Sophos) and security rules.
• Design and maintain DMZ architecture for public-facing services.
• Administer MPLS circuits and support deployments to optimize performance across sites.
• Deploy and manage wireless solutions (Aruba, Cisco, Cambium, Huawei).
• Implement NMS monitoring (SolarWinds, PRTG) and lead incident resolution.
• Plan DR sites and backup/failover strategies; maintain topology diagrams and docs.

Skills

Routing & Switching

Firewall security

Network monitoring

CCNA certified

CCNP certified

Multi-vendor

Documentation

Education

Bachelor’s or Master’s in IT/CS

Tools

SolarWinds

PRTG

Cisco IOS

Huawei equipment

Job description

• Install, configure, upgrade, and monitor enterprise network devices to ensure high availability and performance.
• Design, implement, and manage Layer-2 and Layer-3 networks, including VLANs, ACLs, STP/RSTP, QoS, and routing protocols (OSPF, BGP, EIGRP).
• Manage traffic flow across access, distribution, and core layers for low latency and fault tolerance.
• Troubleshoot complex network issues such as routing loops, broadcast storms, and performance bottlenecks.
• Configure and manage firewalls (Cisco ASA, FortiGate, Sophos), NAT, access controls, and security rules for internal, DMZ, and internet-facing networks.
• Design, implement, and maintain DMZ architecture to host secure public-facing services.
• Administer MPLS circuits and support any deployments related to network services to optimize performance and redundancy across sites.
• Deploy, configure, and manage enterprise wireless solutions (Aruba, Cisco, Cambium, Huawei, etc.) and firmware lifecycle management.
• Implement and manage NMS platforms, including SolarWinds and PRTG, to monitor network health, conduct root cause analysis, and lead incident resolution
• Plan and manage primary and disaster recovery sites, including backup/failover strategies and specialized networks (CCTV, critical infrastructure).
• Manage end-to-end network projects and maintaining accurate documentation and network topology diagrams.

Qualifications and Experience:

• Bachelor’s or Master’s degree in Information Technology, Computer Science, or a related field from a recognized institution.
• Minimum 5 years of hands‑on experience in enterprise network administration, supporting LAN, WAN, MPLS, and internet‑facing networks in large‑scale or mission‑critical environments.
• Strong expertise in network performance optimization, routing and switching, firewall security, and the design of high‑availability, resilient network architectures.
• Demonstrated experience managing core and distribution layer switches, as well as multi‑vendor network environments, including Cisco and Huawei.
• Hands‑on experience with network monitoring and management tools such as SolarWinds and PRTG for proactive fault detection and performance analysis.
• Demonstrated skills in incident management, root cause analysis, and emergency response for critical network outages.
• CCNA and CCNP certifications required; additional security or wireless certifications are a plus.
• Excellent verbal and written communication, strong analytical and troubleshooting skills, and thorough documentation capabilities.