Title: Senior Network Administrator

Experience: 6+ years

Location: Hyderabad

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

- 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.
- Configure IPsec VPN tunnels.
- Manage WAN and ISP connectivity.
- Troubleshoot routing and connectivity issues.

3. Firewall Administration (Mandatory)
- Hands-on experience with any enterprise firewall such as:
- Palo Alto
- Fortinet FortiGate
- Cisco Firepower/ASA




- 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
- Cisco Nexus 9000 Series
- Cisco ISR/ASR Routers
- OSPF, BGP, EIGRP, RIP
- HSRP, VRRP
- VLANs, STP, RSTP, MSTP
- ACLs, Route Maps, Prefix Lists
- NAT, PAT, IPsec VPN
- 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.
- Solid troubleshooting and leadership skills.

📌 Senior Network Administrator (Hyderabad)
🏢 Coforge
📍 Hyderabad