Senior Network Administrator

Coforge; Hyderabad; On-site; INR 900,000 - 1,300,000; Full time

Job summary

Coforge in Hyderabad seeks a Senior Network Administrator with hands-on Routing & Switching and firewall expertise. You will design, implement, and troubleshoot complex enterprise networks ensuring secure, reliable connectivity across multiple campuses and data centers.

Candidates should hold B.E./B.Tech or MCA and have experience with Cisco routers/switches, OSPF/BGP, VLANs, NAT, and firewall platforms (Fortinet, Check Point, Cisco ASA).

Qualifications

• Bachelor-level degree in engineering or equivalent in IT/CS.
• Hands-on experience with routing/switching in enterprise networks.
• Experience with firewall administration across major vendors.

Responsibilities

• Routing & Switching Administration: configure and manage Cisco L2/L3 switches, VLANs, STP, EtherChannel, HA (HSRP/VRRP).
• Router Administration: configure Cisco ISR/ASR, OSPF/BGP, ACLs, NAT, WAN connectivity.
• Firewall Administration: configure policies, VPNs, NAT, security rules across Fortinet/Check Point/Sophos/Cisco Firepower.
• Network Troubleshooting: end-to-end problem resolution, routing issues, VLAN/trunk problems, packet captures.
• Monitoring & Network Services: DNS/DHCP, SNMP, Syslog, NTP, vendor coordination.

Skills

L2 support

Cisco routing

Cisco switching

Configuration

Troubleshooting

Firewall administration

Networking monitoring

Education

B.E./B.Tech (CS/IT/ECE)

MCA

M.Sc. (IT/CS)

Tools

Cisco IOS

Fortinet FortiGate

Check Point

SOPs

Job description

Skills Required: L2 support, Cisco routers & switches, configuration, troubleshooting

Notice Period: Immediate joiner or up to 15 days

Qualification: B.E./B.Tech (CS/IT/ECE) / MCA / M.Sc. (IT/CS) from a recognised university

We at Coforge are seeking a “Senior Network Administrator" with strong expertise in Routing & Switching and hands‑on experience with enterprise firewalls. The candidate will be responsible for designing, implementing, managing, and troubleshooting network infrastructure, ensuring secure and reliable connectivity across enterprise environments.

Key Responsibilities

1. Routing & Switching Administration

• Configure and manage Cisco Layer 2 and Layer 3 switches.
• Create, modify, and troubleshoot VLANs.
• Configure Access and Trunk ports.
• Implement and troubleshoot Inter-VLAN Routing.
• Configure and manage VTP, STP, RSTP, and MSTP.
• Configure EtherChannel (LACP/PAgP).
• Configure Port Security and MAC Address Filtering.
• Configure SVI and Management IPs.
• Implement High Availability using HSRP and VRRP.
• Monitor and troubleshoot interface errors, CRC drops, packet loss, and network instability.
• Perform IOS upgrades and configuration backups.

2. Router Administration

• Configure and manage Cisco ISR/ASR Routers.
• Implement Static and Dynamic Routing.
• Configure and troubleshoot:
• OSPF
• BGP
• EIGRP
• RIP
• Route Redistribution between protocols.
• Configure ACLs, Prefix Lists, and Route Maps.
• Implement NAT and PAT.
• Manage WAN and ISP connectivity.
• Troubleshoot routing and connectivity issues.

3. Firewall Administration (Mandatory)

• Hands‑on experience with any enterprise firewall such as:
• Fortinet FortiGate
• Check Point
• Sophos
• Configure and manage Firewall Policies, NAT, and Security Rules.
• Configure Site‑to‑Site VPN and Remote Access VPN.
• Troubleshoot VPN, NAT, and Security Policy issues.
• Monitor firewall logs and investigate security incidents.
• Perform firewall upgrades, patching, and backup activities.
• Optimize firewall performance and security posture.
• Implement URL Filtering, IPS/IDS, Application Control, and Threat Prevention features.

4. Network Troubleshooting

• Perform end‑to‑end network troubleshooting.
• Analyze routing tables, ARP tables, and traffic flows.
• Troubleshoot VLAN mismatches, trunk issues, and STP loops.
• Identify packet drops, latency, and bandwidth bottlenecks.
• Perform packet captures using Wireshark or equivalent tools.
• Troubleshoot OSPF and BGP neighbor establishment issues.
• Support critical incidents and root cause analysis (RCA).

5. Monitoring & Network Services

• Manage TCP/IP, DNS, DHCP.
• Configure and monitor SNMP, Syslog, and NTP.
• Utilize network monitoring tools for proactive issue detection.
• Create operational documentation and SOPs.
• Coordinate with vendors and internal stakeholders for issue resolution.

Required Skills

• Cisco Catalyst Switches
• OSPF, BGP, EIGRP, RIP
• HSRP, VRRP
• VLANs, STP, RSTP, MSTP
• ACLs, Route Maps, Prefix Lists
• TCP/IP, DNS, DHCP
• SNMP, Syslog, NTP
• Enterprise Firewall Administration (Palo Alto/Fortinet/Cisco Firepower/ASA/Check Point/Sophos)

Preferred Qualifications

• CCNA / CCNP Certification preferred.
• Firewall certifications such as PCNSA/PCNSE, NSE4/NSE5, CCNP Security preferred.
• Experience in enterprise or data center network environments.
• Strong troubleshooting and leadership skills.