Jobs · Information Technology · Indiana

Senior Core Network Engineer

nextjobz · Marion County, IN · 2 mo ago
On-siteInformation TechnologyFull-time

About the Role

We are looking for an experienced and highly skilled Senior Core Network Engineer to manage, maintain, troubleshoot, and optimize our ISP Core Network infrastructure. The ideal candidate should have strong hands-on expertise in Routing & Switching, BGP, OSPF, MPLS, IP networking, and high-availability network design.

Key Responsibilities

  • Design, configure, maintain, and troubleshoot ISP Core and Aggregation networks.
  • Manage BGP, OSPF, MPLS, VRF, VLAN, LACP, STP, and VRRP.
  • Configure and troubleshoot Huawei, Cisco, and MikroTik routers, switches and OLT.
  • Perform BGP peering, route-policy, prefix filtering, route advertisement, and traffic engineering.
  • Monitor network performance, bandwidth utilization, latency, packet loss, and routing stability.
  • Troubleshoot critical network outages and provide timely resolution.
  • Implement network redundancy and high-availability solutions.
  • Manage IP addressing, subnetting, and IPv4/IPv6 networks.
  • Work with NOC teams during major incidents and network maintenance.
  • Implement network security measures including ACL, IPS, DDoS protection, and traffic filtering.
  • Maintain network documentation, configuration backups, and technical reports.
  • Participate in network expansion, migration, capacity planning, and optimization projects.

Required Technical Skills

  • Strong knowledge of TCP/IP, Routing & Switching.
  • Excellent knowledge of BGP and OSPF.
  • Hands-on experience with MPLS, L3VPN, VRF, and IP transit.
  • Experience with Huawei VRP / Cisco IOS / MikroTik RouterOS.
  • Understanding of IPv4, IPv6, CIDR, subnetting, and route summarization.
  • Experience with SNMP-based monitoring tools such as Zabbix/Cacti.
  • Knowledge of network security, ACL, IPS, and DDoS mitigation.
  • Good troubleshooting and analytical skills.

Requirements

  • Experience: 5 years
  • Education: Bachelor of Science in Computer Science and Engineering (CSE)
  • Skills: network engineering, cisco networking, mpls networking, computer network operations, familiarity with sd-wan and mpls technologies, ccnp certified, ccnp certification, network design, ccnp, ccie rands

Last Date of Application: 15 September 2026

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