Senior Network Administrator

Liaquat National Hospital & Medical College

Karachi , Pakistan

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Posted 18 hours ago Report Job

We are seeking a skilled Network Engineer to join our team and take ownership of the design, implementation, and maintenance of our enterprise network infrastructure. The ideal candidate will ensure high availability, optimal performance, and robust security across all network layers. This role requires hands-on experience with complex network environments, strong troubleshooting abilities, and the capacity to manage multi-vendor equipment and network monitoring tools. You will play a key role in supporting critical business operations by maintaining resilient and secure network services.

Key Responsibilities:
Install, configure, upgrade, and monitor enterprise network devices to maintain high availability and optimal performance. Design, implement, and manage Layer-2 and Layer-3 networks, including VLANs, ACLs, STP/RSTP, QoS, and routing protocols such as OSPF, BGP, and EIGRP. Oversee traffic flow across access, distribution, and core layers to ensure low latency and fault tolerance. Troubleshoot complex network issues, including routing loops, broadcast storms, and performance bottlenecks. Configure and manage firewalls including Cisco ASA, FortiGate, and Sophos, along with NAT, access controls, and security policies for internal, DMZ, and internet-facing networks. Design, implement, and maintain DMZ architecture to securely host public-facing services. Administer MPLS circuits and support network service deployments to optimize performance and redundancy across multiple sites. Deploy, configure, and manage enterprise wireless solutions from vendors such as Aruba, Cisco, Cambium, and Huawei, including firmware lifecycle management. Implement and manage Network Management Systems (NMS) like SolarWinds and PRTG to monitor network health, perform root cause analysis, and lead incident resolution efforts. Plan and manage primary and disaster recovery sites, including backup and failover strategies, as well as specialized networks such as CCTV and critical infrastructure. Lead end-to-end network projects while maintaining accurate documentation and up-to-date network topology diagrams.

Required Qualifications:
Bachelor’s or Master’s degree in Information Technology, Computer Science, or a related discipline from a recognized institution. A minimum of 5 years of hands-on experience in enterprise network administration, supporting LAN, WAN, MPLS, and internet-facing networks within large-scale or mission-critical environments. Proven expertise in network performance optimization, routing and switching, firewall security, and designing high-availability, resilient network architectures. Experience managing core and distribution layer switches and working within multi-vendor network environments, particularly Cisco and Huawei. Proficiency with network monitoring and management tools such as SolarWinds and PRTG for proactive fault detection and performance analysis. Strong skills in incident management, root cause analysis, and emergency response for critical network outages. CCNA and CCNP certifications are mandatory. Excellent verbal and written communication skills, strong analytical and troubleshooting capabilities, and meticulous documentation practices.

Preferred Qualifications and Benefits:
Additional certifications in security or wireless technologies are advantageous. The role offers the opportunity to work with cutting-edge network technologies and contribute to critical infrastructure projects. Candidates will benefit from a collaborative work environment focused on professional growth and technical excellence.