IT Network Engineer - Cisco Identity Services Engine

Job Title : Senior Network Engineer

Location : Bangalore, India

Experience : 10+ years in enterprise network engineering, including 3+ years of deep hands-on expertise with Cisco Identity Services Engine (ISE).

Job Type : Full-time, Permanent

Role Overview :

We are seeking a highly experienced Senior IT Network Engineer to architect, secure, optimize, and troubleshoot complex enterprise network infrastructures. The ideal candidate will possess expert-level Cisco ISE skills and a proven track record in LAN/WAN, network security, wireless, cloud networking, and performance optimization. You will lead advanced troubleshooting efforts, plan network capacity for organizational growth, integrate cutting-edge technologies, and mentor junior engineers.

Key Responsibilities :

Architecture, Design & Implementation :

- Design, implement, and maintain high-availability enterprise network solutions across data, voice, and video domains.

- Architect secure and scalable LAN/WAN topologies, including advanced routing, switching, and segmentation strategies.

- Plan, design, and deploy network security solutions integrating Cisco ISE with wired, wireless, and VPN networks.

- Lead capacity planning and infrastructure expansion to support virtualization environments (SAN configuration, Hyper-V, VMware ESXi).

- Design and implement Microsoft Azure networking solutions, including VNet peering, Azure Firewall, NSGs, and hybrid connectivity.

Network Security & Policy Enforcement :

- Configure and manage Cisco ISE for endpoint authentication, policy enforcement, posture assessment, and device profiling.

- Implement firewall policies, IDS/IPS, and advanced segmentation using Palo Alto, Cisco ASA/FTD, and Meraki platforms.

- Administer PKI infrastructure, certificates, and authentication protocols (RADIUS, TACACS+, 802.1x, SSL/TLS).

- Conduct security audits to meet compliance requirements (HIPAA, PCI-DSS, SOC 2, GDPR).

Operations & Troubleshooting :

- Perform in-depth packet analysis using Wireshark, NetFlow, and SNMP-based monitoring tools (SolarWinds, Nagios).

- Collaborate with carriers/vendors to resolve hardware bugs, firmware issues, and scalability challenges.

- Automate network provisioning and maintenance tasks using Python or PowerShell scripting.

Collaboration & Leadership :

- Mentor junior engineers, providing technical guidance and knowledge transfer.

- Develop network documentation, topology diagrams, and SOPs for operational excellence.

- Partner with cross-functional teams to integrate network infrastructure with Microsoft 365, Azure, and third-party platforms.

- Support strategic projects, delivering technical input for proposals, budgets, and roadmaps.

Core Technical Skills :

- Networking Protocols : BGP, OSPF, VRRP, IPsec, NAT, IKEv2, 802.1Q, 802.1x, MD5, DES/3DES, SHA1, TLS, SSL.

- Security & Access Control : Cisco ISE (Policy Sets, Profiling, Posture), RADIUS, TACACS+, PKI, MFA, NAC.

- Hardware Expertise : Cisco Catalyst 9K, Nexus series, 6500s, Palo Alto NGFW, Meraki switches & firewalls.

- Wireless Networking : Wi-Fi 6, securing WLANs, Cisco/Meraki wireless controllers.

- Cloud Networking : AWS VPCs, Azure VNets, hybrid cloud routing, ExpressRoute, VPN gateways.

- Monitoring & Automation : Wireshark, SolarWinds, Nagios, Ansible, Python, PowerShell.

Qualifications :

- Education : Bachelors degree in Computer Science, Information Technology, or related field.

Certifications (Preferred) :

- Microsoft : AZ-104, AZ-700 (Azure Networking).

- Palo Alto : PCNSE, PCNSA, or PCSSA.

- Proven experience implementing Cisco ISE in large, complex enterprise environments.

Soft Skills :

- Strong analytical and problem-solving abilities.

- Excellent communication (oral, written) and stakeholder management skills.

- Ability to work effectively across multiple teams in high-pressure environments.