• Application Deadline:
• Position: Core Network Engineer



• Job Type Full Time



• Qualification BA/BSc/HND



• Experience 3 - 7 years



• Location Lagos




• Job Field ICT / Computer 
  
  

Job Summary

• We are seeking a highly skilled Core Network Engineer to design, implement, maintain, and optimize the IP/MPLS core infrastructure supporting our telecom, ISP, and enterprise network services.


• The ideal candidate will be responsible for ensuring 24/7 high availability, capacity scalability, and robust security of our core networking systems across multiple POPs, data centers, and customer-facing services.

Key Responsibilities

Core Network Operations:

• Design and deploy scalable and redundant IP/MPLS core networks (dual-stack IPv4/IPv6).


• Operate and manage edge/core routers, aggregation switches, and broadband access systems.


• Maintain routing protocols: BGP, OSPF, IS-IS, and ensure optimal peering policies.


• Manage interconnections with upstream providers, IXPs, and enterprise clients.


• Optimize traffic engineering using MPLS-TE, segment routing, and QoS strategies.

Network Availability & Monitoring:

• Ensure high availability (99.999%) of the core and aggregation network layers.


• Continuously monitor network health using SNMP/NMS tools (e.g., SolarWinds, Zabbix, Nagios).


• Troubleshoot network faults, conduct root cause analysis, and implement preventive measures.

Integration & Support:

• Support integration of broadband, mobile backhaul, voice, and cloud services into the core.


• Collaborate with NOC, Transmission, Security, and Access teams for service assurance.


• Provide L3/L4 escalation support and manage changes with minimal disruption.

Security & Compliance:

• Implement firewall policies, ACLs, route filters, DDoS protection, and network hardening.


• Ensure compliance with industry standards (ISO/IEC, NCC guidelines, etc.).


• Conduct network audits and support DR/BCP planning and implementation.

Documentation & Capacity Planning:

• Maintain up-to-date documentation of network architecture and configurations.


• Perform periodic capacity analysis and make recommendations for upgrades.


• Participate in infrastructure scaling, new site rollout, and POP expansion planning.

Requirements

Education & Certifications:

• B.Sc. in Computer Science, Telecommunications, Electrical Engineering, or a related field.


• Professional Certifications: CCNP/CCIE, JNCIP/JNCIE, HCIP/HCIE, or Nokia NRS-II preferred.

Industry Experience:

• 3 - 7 years of experience in Telecom, ISP, or large-scale Enterprise Network environments.


• Proven record of managing multi-vendor core networks and service provider-grade infrastructure.

Technical Expertise:

• Strong understanding of IP/MPLS, VRF, VLANs, L2/L3 VPNs, NAT, DNS, DHCP.


• Hands-on experience with equipment from Cisco, Juniper, Huawei, Nokia, or Mikrotik.


• Experience with transmission technologies: SDH, DWDM, Microwave (preferred).


• Familiarity with network automation tools: Python, Ansible, Netconf/YANG (advantageous).

Soft Skills:

• Strong troubleshooting, documentation, and analytical skills.


• Effective communicator across technical and non-technical teams.


• Ability to work in high-pressure, mission-critical environments with 24/7 responsibilities.


• Proactive mindset with keen attention to detail.