Walk-in | Network L2 Admin Juniper Certified

Tata Consultancy Services; Mumbai; On-site; INR 1,500,000 - 2,800,000; Full time

Job summary

Tata Consultancy Services is hiring for a Network Juniper professional in Mumbai with 4–9 years of related experience. You will provide L2 network support for Juniper-based infrastructure, handle complex troubleshooting, and ensure high availability, performance, and security of the network.

The role requires strong knowledge of Juniper devices and networking fundamentals. The incumbent will manage Juniper MX/EX/QFX/SRX devices, perform configurations, monitoring, and incident resolution within

Qualifications

• Strong knowledge of TCP/IP, OSI model, DNS, DHCP.
• Routing protocols including OSPF, BGP, and static routes.
• VLAN, STP, trunking concepts for scalable networks.
• Hands-on Junos OS and Juniper devices (MX, EX/QFX, SRX).
• Proficiency with Juniper CLI and troubleshooting commands.
• Experience with VPN, firewall configurations and security best practices.

Responsibilities

• Provide L2 network support for Juniper-based infrastructure (LAN/WAN/Firewall).
• Handle advanced troubleshooting, configuration, and incident resolution.
• Ensure high availability, performance and security of the network environment.
• Manage Juniper devices (MX, EX, QFX, SRX) including configuration and monitoring.
• Perform RCA and implement corrective actions; ensure SLA-based incident resolution.
• Contribute to change management, firmware upgrades, and DR drills.

Skills

TCP/IP,DNS,DHCP,OSI model

Routing protocols(OSPF,BGP)

VLAN, STP, trunking

Junos OS

Juniper devices MX/EX/QFX/SRX

Junos CLI

VPN/Firewall security

Education

JNCIA/JNCIS (Juniper Certifications)

ITIL Foundation

CCNA (Cisco cert) – added advantage

Tools

SolarWinds

Nagios

PRTG

Wireshark

Job description

Dear Candidate,

Greetings from TATA Consultancy Services!!

Thank you for expressing your interest in exploring a career possibility with the TCS Family.

Hiring For:- Network Juniper (Certified)

Location: Mumbai

Experience: 4 to 9yrs

1. Role Overview

• Provide L2 network support for Juniper-based infrastructure (LAN/WAN/Firewall)
• Handle advanced troubleshooting, configuration, and incident resolution
• Ensure high availability, performance, and security of network environment

2. Key Responsibilities

A. Network Operations & Support

• Manage and support Juniper devices (MX, EX, QFX, SRX series)
• Perform configuration, monitoring, and maintenance of routers/switches/firewalls
• Handle L2 incidents, service requests, and problem tickets
• Work with L1 for escalation and coordinate with L3 for complex issues [linkedin.com]

B. Troubleshooting & Incident Management

• Perform advanced troubleshooting of network issues (routing, switching, firewall, VPN)
• Conduct root cause analysis (RCA) and implement corrective actions
• Ensure incident resolution within SLA timelines

C. Configuration & Change Management

• Implement network configuration changes (VLAN, routing, subnetting, ACLs)
• Execute standard changes as per CAB / SOP
• Participate in firmware upgrades, patching, and DR drills

D. Monitoring & Performance Optimization

• Monitor network using tools like SolarWinds, Nagios, PRTG
• Analyze performance metrics and optimize network throughput
• Maintain uptime and network health

E. Security & Compliance

• Configure and manage firewall policies (Juniper SRX)
• Ensure security through VPN, ACLs, and filtering rules
• Monitor and respond to network security events

F. Documentation & Reporting

• Maintain:
  • Network diagrams
  • Configuration backups
  • SOPs / Knowledge base
• Provide incident reports, RCA, and audit compliance documentation

3. Technical Skills Required

Core Networking

• Strong knowledge of:
  • TCP/IP, OSI model, DNS, DHCP
  • Routing protocols (OSPF, BGP, Static)
  • Switching (VLAN, STP, trunking)

Juniper Technologies

• Hands-on experience with:
  • Junos OS
  • Juniper product families:
    • MX (Routing)
    • EX/QFX (Switching)
    • SRX (Firewall)
• Knowledge of Junos CLI and troubleshooting commands

Network Security

• Firewall configuration (SRX/Palo Alto optional)
• VPN (IPSec/SSL)
• Basic IDS/IPS concepts

Tools & Monitoring

• Network monitoring tools (SolarWinds/Nagios/PRTG)
• Packet analysis (Wireshark optional)

4. Certifications (Preferred / Mandatory)

• JNCIA / JNCIS (Juniper Certifications)
• ITIL Foundation (good to have)
• Comparable Cisco certification (CCNA) – added advantage

5. Experience

• 5–8 years experience in network operations
• Minimum 5–8 years hands-on with Juniper environment
• Experience in data center / enterprise / BFSI environment preferred

6. Soft Skills

• Strong analytical & troubleshooting skills
• Good communication and stakeholder management
• Ability to work in 24x7 support model
• Documentation and process adherence mindset

7. KPIs / Performance Metrics

• Incident resolution within SLA (MTTR)
• Network uptime and availability %
• Change success rate
• Reduction in repeat incidents

Compliance & audit readiness