L3 Network Engineer

MarbleX; Mumbai; On-site; INR 600,000 - 1,200,000; Full time

Job summary

MarbleX seeks a network engineer to install, configure, and troubleshoot LAN/WAN, firewall, and VPN across data centre and banking environments.

Responsibilities include monitoring availability and performance, supporting new projects with technical specs for RFPs, and coordinating with customers, providers, and TAC teams to resolve connectivity issues.

Qualifications

• 4–5 years hands-on experience with Cisco/Juniper and related network devices.
• Data Center networking experience is essential.
• Experience in designing and implementing large scale enterprise networks.

Responsibilities

• Install, configure, maintain and troubleshoot network & security equipment, including LAN/WAN, firewall and VPN.
• Monitor network availability, performance and security; own connectivity issues through resolution and documentation.
• Support network design and new projects, including technical specifications for RFPs.
• Coordinate with customers, service providers, vendors and TAC teams for connectivity, troubleshooting and RCA.
• Maintain network connectivity across data centre and banking environments.

Skills

TCP/IP

OSI model

Ethernet

NAT

IP addressing

BGP

OSPF

HSRP

VRRP

STP

VLAN

SVI

LACP

DC Networking

Cisco devices

Juniper devices

Cisco ASA

Juniper SRX

Check Point

Fortinet

IPS/IDS/UTM

SD-WAN

GRE

P-VPN

P-NAT

P-Routing

Firewall clustering

IPv6

TCP/UDP

IOS upgrades

RADIUS

TACACS+

NMS

Syslog

SNMP

Network monitoring

Problem solving

Communication

Job description

Install, configure, maintain and troubleshoot network & security equipment, including LAN/WAN, firewall and VPN.

Monitor network availability, performance and security; own connectivity issues through resolution and documentation.

Support network design and new projects, including technical specifications for RFPs.

Coordinate with customers, service providers, vendors and TAC teams for connectivity, troubleshooting and RCA.

Maintain network connectivity across data centre and banking environments.

Key Skills:-

TCP/IP, OSI, Ethernet, NAT and IP addressing.

BGP (must), OSPF, HSRP, VRRP; STP, VLAN, SVI and LACP.

Data Center networking and 4–5 years hands-on experience with Cisco/Juniper and related network devices.

Firewalls: Cisco ASA, Juniper, Check Point or Fortinet; IPS/IDS/UTM.

SD-WAN ( Fortigate /Aruba), GRE, P-VPN, P-NAT, P-Routing and firewall clustering.

TCP/UDP/IPv6, IOS upgrades, RADIUS, TACACS/TACACS+, NMS, Syslog and SNMP.

Network monitoring/troubleshooting tools; strong communication and problem-solving skills.