Job Description

5 - 7 Years
1 Opening
Trivandrum

Role description

The L3 Network Administrator will be responsible for the

design, implementation, and advanced support

of complex network infrastructures. The role involves managing

routing, switching, firewalls, and load balancers

across enterprise and carrier-grade environments. The candidate should have strong expertise in

Juniper, Cisco

, and

F5 technologies

, with proven experience in securing and optimizing network performance for

PCI/PII-compliant environments

.

Key Responsibilities

Manage, configure, and troubleshoot

routing and switching

infrastructure (Juniper, Cisco). Implement and maintain

BGP routing

and other advanced network protocols. Administer and secure

Juniper SRX firewalls

, including rule creation, policy management, and threat mitigation. Install, configure, and maintain

F5 load balancers

to ensure high availability and performance. Design, document, and implement

LAN/WAN network architectures

and segmentation strategies. Support

network capacity planning, optimization, and redundancy

initiatives. Develop and enforce

firewall and network policies

to meet

PCI/PII compliance

standards. Troubleshoot complex

connectivity, performance, and security

issues across multi-vendor environments. Collaborate with infrastructure and security teams to deliver

scalable and secure network solutions

. Maintain up-to-date

network documentation, topology diagrams, and configuration records

.

Key Requirements

10+ years

of hands-on experience in

network administration and engineering

(routers, switches, firewalls). Strong working knowledge of

Juniper

and

Cisco

network devices. Proven experience with

routing protocols

, especially

BGP

. Expertise in

Juniper SRX firewalls

- configuration, rule management, and troubleshooting. Experience with

F5 load balancers

(LTM, GTM preferred). Deep understanding of

WAN/LAN technologies

and

network segmentation

principles. Experience designing and maintaining

carrier-grade or large enterprise networks

. Familiarity with

PCI/PII compliance

and firewall policy design. Strong

communication and documentation

skills for cross-functional collaboration.

Preferred Skills & Tools

Networking Platforms:

Juniper, Cisco, Arista

Security:

Juniper SRX Firewalls, PCI/PII Policy Implementation

Load Balancing:

F5 (LTM/GTM)

Protocols:

BGP, OSPF, VLAN, VPN

Tools:

Wireshark, SolarWinds, Network Monitoring Systems

Skills

Firewalls,Wireless Networking,Routing And Switching

About UST

UST is a global digital transformation solutions provider. For more than 20 years, UST has worked side by side with the world's best companies to make a real impact through transformation. Powered by technology, inspired by people and led by purpose, UST partners with their clients from design to operation. With deep domain expertise and a future-proof philosophy, UST embeds innovation and agility into their clients' organizations. With over 30,000 employees in 30 countries, UST builds for boundless impact--touching billions of lives in the process.