Senior Network Engineer – L3

GSPANN Technologies, Inc.; Hyderabad; On-site; INR 1,500,000 - 2,100,000; Full time

Job summary

GSPANN Technologies, Inc. is seeking a Senior Network Engineer to provide L3 technical leadership across enterprise network infrastructure, driving automation, security, and high-availability initiatives.

You will lead complex production environments, design and optimize routing, switching, firewall, and load-balancing solutions, and mentor L2 engineers while coordinating with Infrastructure, Cloud, Security, and Architecture teams.

Qualifications

• Bachelor's degree in CS/IT/EE or equivalent.
• CCNP Enterprise certification; CCIE Enterprise advantageous.
• 8–12 years’ experience in enterprise network engineering, L3 focus.

Responsibilities

• Lead technical direction for enterprise network infrastructure and support complex production environments.
• Drive troubleshooting for complex network incidents (P1/P2/P3) involving routing, switching, firewalls, SD-WAN, VPN, and load balancers.
• Design, review, and optimize enterprise routing, switching, firewall, and load-balancing solutions.
• Perform RCA to improve reliability and propose long-term improvements.
• Develop and maintain network automation using Python, PowerShell, Ansible, REST APIs, and Git.

Skills

Network automation

L3 engineering leadership

Firewall engineering

Routing & switching

Mentoring & leadership

Education

Bachelor's degree in CS/IT/Electronics

CCNP Enterprise

Tools

SolarWinds

LogicMonitor

Wireshark

Grafana

Cisco DNA Center

Splunk

Python

Job description

Routing and Switching Enterprise Firewalls Software-Defined Wide Area Network (SD-WAN) Wireless Networking Cloud Networking Network Automation Infrastructure Lifecycle Management Network Monitoring Technical Leadership Cisco Enterprise Infrastructure

Description

GSPANN is hiring a Senior Network Engineer to provide L3 technical leadership across enterprise network infrastructure, driving automation, security, and high-availability initiatives.

Roles and Responsibilities

• Lead technical direction for enterprise network infrastructure and support complex production environments.
• Drive troubleshooting and resolution of complex network incidents (P1/P2/P3) involving routing, switching, firewalls, SD-WAN, wireless, VPN, and load balancers.
• Design, review, and optimize enterprise routing, switching, firewall, and load-balancing solutions.
• Optimize infrastructure reliability by performing Root Cause Analysis (RCA) for recurring incidents and recommending long-term improvements.
• Design and implement network security solutions, including firewall policies, ACL optimization, VPN architecture, network segmentation, Zero Trust initiatives, and Network Access Control (NAC) integration.
• Lead infrastructure lifecycle management activities, including firmware upgrades, OS upgrades, hardware refresh, capacity planning, and performance tuning.
• Develop and maintain network automation solutions using Python, PowerShell, Ansible, REST APIs, and Git to automate configuration deployment, health checks, compliance validation, and configuration backups.
• Implement and optimize enterprise monitoring solutions using SolarWinds, Logic Monitor, Cisco DNA Center, Splunk, Grafana, NetFlow, and Wireshark.
• Lead network modernization, architecture reviews, proactive monitoring initiatives, dashboard development, alert optimization, and capacity forecasting.
• Support L2 Network Engineers through mentoring, technical change reviews, Major Incident Management (MIM) participation, RCA reviews, and vendor escalation coordination.
• Collaborate with Infrastructure, Cloud, Security, and Architecture teams to deliver enterprise networking projects.
• Ensure high availability, scalability, security, reliability, and operational excellence across enterprise network infrastructure.

Skills and Experience

• Hold a Bachelor's degree in Computer Science, Information Technology, Electronics, or an equivalent discipline, and a Cisco Certified Network Professional (CCNP) Enterprise certification; a Cisco Certified Internetwork Expert (CCIE) Enterprise, Palo Alto Networks Certified Network Security Engineer (PCNSE), Fortinet NSE, F5 Certified Administrator, or ITIL Foundation certification is an advantage.
• Bring 8–12 years of experience managing enterprise network infrastructure in an L3 engineering role.
• Demonstrate strong hands-on experience with Cisco Catalyst, Cisco Nexus, Aruba, and Juniper platforms, along with strong knowledge of BGP, OSPF, EIGRP, HSRP, VRRP, STP, EtherChannel, and VXLAN.
• Apply hands-on experience with enterprise firewalls, including Palo Alto, Cisco Firepower, Fortinet, and Check Point.
• Work with load balancers, including F5 BIG-IP and Citrix ADC (NetScaler), and wireless platforms, including Cisco Wireless LAN Controller and Aruba Wireless.
• Manage SD-WAN technologies, including Cisco SD-WAN, VMware VeloCloud, and Fortinet SD-WAN.
• Develop strong knowledge of cloud networking, including Microsoft Azure, VPN Gateway, ExpressRoute, and AWS Direct Connect.
• Utilize monitoring and automation tools, including SolarWinds, Logic Monitor, Wireshark, NetFlow, SNMP, Cisco DNA Center, Splunk, and Grafana, alongside Python, PowerShell, Ansible, Git, and REST APIs for network automation.
• Demonstrate excellent troubleshooting, analytical, communication, documentation, stakeholder management, mentoring, and leadership skills.