L3 Network Security Engineer _ Contract

Employment Type:

12-Month Contract, Renewable

Employment:

NTT

Location:

Singapore

About the Client

Our client is a

leading global investment organisation headquartered in Singapore , managing a diversified portfolio across multiple asset classes and global markets. The organisation operates a large-scale, highly secure enterprise technology environment and places strong emphasis on infrastructure resilience, operational excellence, security, and automation.

We are looking for an experienced

L3 Network Security Engineer

with strong hands-on

Cisco networking expertise

to support and manage complex enterprise network infrastructure.

Key Responsibilities

Provide

L3 network and network security engineering support

for complex enterprise infrastructure.

Manage, configure, troubleshoot and optimise

Cisco network infrastructure , including routers and switches.

Support and troubleshoot network security technologies including

Palo Alto, Check Point and Fortinet firewalls .

Support

F5 load balancers

and application delivery infrastructure.

Manage and troubleshoot

Infoblox DNS, DHCP and IPAM

services.

Configure and troubleshoot

BGP, OSPF, VLANs, STP, ACLs and other Layer 2/Layer 3 technologies .

Handle complex L3 network/security incidents, perform

Root Cause Analysis (RCA)

and drive issues through to resolution.

Perform network and security configuration changes, upgrades, migrations, patching and implementation activities.

Develop and enhance

network automation using Python and Ansible

to improve operational efficiency and reduce manual activities.

Monitor network availability, security, performance and capacity across production environments.

Troubleshoot connectivity, firewall, routing, latency, packet loss and application traffic issues.

Work closely with infrastructure, cybersecurity, application and operations teams on technical issues and implementations.

Participate in major incident management and provide technical expertise for critical production issues.

Maintain network/security documentation, configurations, diagrams, SOPs and operational procedures.

Ensure network infrastructure complies with enterprise

security, resilience, availability and operational standards .

Requirements

Requirements

7+ years of hands-on Network / Network Security Engineering experience , preferably in large-scale enterprise environments.

Strong hands-on experience supporting

Cisco network infrastructure .

Strong experience across multiple network and security technologies including

Palo Alto, Check Point, Fortinet, Infoblox and F5 .

Strong knowledge of

routing, switching, TCP/IP, BGP, OSPF, LAN/WAN and VLAN .

Hands-on experience with

firewalls, network security and security policy management .

Experience with

F5 load balancing

and application delivery technologies.

Experience with

Infoblox DNS, DHCP and IPAM .

Strong

network automation

experience using

Python and Ansible .

Strong L3 troubleshooting, incident resolution and

Root Cause Analysis (RCA)

experience.

Experience supporting highly available, business-critical production environments.

CCIE certification is highly preferred.

Experience within banking, financial services, investment management or other large enterprise environments will be advantageous.

Certifications

CCIE certification is highly preferred , particularly:

CCIE Enterprise Infrastructure (CCIE-EI)

CCIE Security

CCNP Enterprise / CCNP Security

may also be considered

Relevant certifications in

Palo Alto, Check Point, Fortinet or F5

will be advantageous

Why Join?

This is an opportunity to work within a

large-scale, highly sophisticated enterprise network environment

supporting critical infrastructure for a leading global investment organisation.

The position is offered as a

12-month renewable contract with NTT , with the opportunity to work on complex enterprise networking technologies and infrastructure initiatives.

We look forward to your application!

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