IT Infrastructure & Network Administrator

Dalvkot Utility Enterprises Private Limited; Bengaluru; On-site; INR 800,000 - 1,200,000; Full time

Job summary

Dalvkot Utility Enterprises Private Limited is seeking an experienced IT Infrastructure & Network Administrator in Bengaluru. The successful candidate will manage enterprise network operations, firewall configurations, and wireless infrastructure. Responsibilities include the lead on network implementation and monitoring while ensuring high availability. A strong technical background in enterprise LAN/WAN, Extreme Networks, and HPE Aruba systems is required. Competitive salary and benefits package offered.

Qualifications

• Expertise in managing enterprise LAN/WAN infrastructure and firewall security.
• Hands-on experience with Extreme Networks and HPE Aruba switching.
• Knowledge of IPSec VPN and SD-WAN configurations.

Responsibilities

• Manage and configure network hardware and infrastructure.
• Lead the implementation and upgrade of network projects.
• Monitor network performance and manage incidents.

Skills

Enterprise network operations

Firewall security

VLAN configuration

Routing protocols (OSPF, BGP)

Wireless infrastructure management

Incident management

Education

Computer Science or related field

Tools

Fortinet

Extreme Networks

HPE Aruba

TCP/IP

Job description

Overview

Experienced IT Infrastructure & Network Administrator with strong expertise in enterprise network operations, firewall security, and multi-vendor environments. Hands-on experience with Extreme Networks, HPE Aruba switching, Fortinet firewall, and Quantum & Aruba wireless infrastructure ensuring high availability.

Network & Infrastructure Management

• Manage enterprise LAN/WAN infrastructure
• Configure Core, Distribution, and Access switches
• Implement VLANs, Inter-VLAN routing, STP, RSTP, MSTP, LACP, Port Security
• Ensure high availability and redundancy
• Implement HSRP / VRRP
• Troubleshoot L2/L3 issues
• DHCP snooping and loop protection
• Switch firmware upgrade and backup

Switching (Extreme / HPE Aruba)

• Configure Extreme Networks switches (EXOS / VOSS)
• Configure HPE Aruba switches
• VLAN and trunk configuration
• STP, RSTP, MSTP tuning
• LACP / Port channel configuration
• Inter-VLAN routing
• Firmware upgrades and maintenance

Firewall & Network Security (Fortinet)

• Configure FortiGate firewall
• NAT (Static, Dynamic, PAT) configuration
• IPSec Site-to-Site VPN and SSL Remote Access VPN
• Security policy implementation
• Dual ISP failover and SD-WAN
• Log analysis and troubleshooting
• Security rule optimization

Wireless Infrastructure (Quantum & Aruba)

• Configure Quantum Wireless AP
• Configure Aruba AP and Controller
• SSID and VLAN mapping
• Guest WiFi configuration
• Wireless security WPA2/WPA3
• RF optimization and roaming
• Wireless troubleshooting
• AP provisioning and troubleshooting

Project Handling & Implementation

• Lead network implementation and upgrade projects
• Firewall migration and policy redesign
• L2 to L3 migration and VLAN redesign
• New branch connectivity deployment
• Core switch replacement and migration
• Wireless deployment and controller integration
• Dual ISP implementation and failover testing
• Network segmentation and security hardening
• Coordinate with vendors, ISPs, and stakeholders
• Prepare HLD / LLD and network documentation
• Post implementation monitoring and support

Monitoring & Operations

• Extreme Management Center
• HP NNM monitoring
• SNMP and Syslog monitoring
• L2/L3 escalation support
• Incident management
• Observium monitoring

Technical Skills

• TCP/IP, OSI Model
• VLAN, STP, RSTP, MSTP, LACP, EtherChannel
• OSPF, BGP, EIGRP
• Fortinet Firewall
• Extreme Networks and HPE Aruba Switching
• Quantum and Wireless Aruba Wireless Controller

Certifications (Preferred)

• Extreme Certification
• Fortinet NSE4
• Aruba Certification
• CCNA / CCNP

Physical Layer Knowledge

• Structured cabling (Cat6, Cat6A, Cat7, Single-mode & Multi-mode fiber) installation and troubleshooting
• SFP/SFP+/QSFP transceiver handling, compatibility and link validation
• Fiber patching (LC/SC), Tx/Rx power level verification and optical loss checks
• Patch panel termination, rack dressing, and MDF/IDF connectivity management
• 1G/10G/25G uplink provisioning over copper and fiber media
• Physical link troubleshooting using cable tester / Fluke and interface error analysis