Senior Network Engineer with Security and Cisco – City London

• Job Reference: NJ0153
• Date Posted: 1 October 2026
• Recruiter: Nexus Jobs
• Location: City London
• Salary: 60,000 to 70,000
• Sector: I.T. & Communications
• Job Type: Permanent
• Work Hours: Full Time
• Contact: Jas Gujral
• Email:
  
• Telephone:
  

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Job Description

Senior Network Engineer with Security and Cisco – City London

Our Client urgently requires a Senior Network Engineer with heavy background in Network Security on Cisco and Microsoft.

The security and support of the company’s network is paramount.

Predominately a support role (BAU) with design of scalable solutions deliverable through projects.

Encompassing numerous technologies that benefit high-availability solutions.

This role requires a responsible individual who can design and deliver secure networking solutions.

Fast thinker who can diagnose, assist others and remediate BAU support issues.

Main Aspects of the role:

-Work within Infrastructure team in supporting and delivering all aspect of BAU and support services

-Design, build and implement firewall solutions from perimeter to DMZ roles

-Support IPS deployment for European branches

-Develop, maintain and deliver global standards to all networking devices

-Remediate Penetration Test results

-Ensure seamless migration of network estate to newly adopted security framework

General Skills

-Experience working within mission-critical environments

-Experience in operational deployments

-Datacentre cabling and racking of equipment

Technical Skills you need to bring to the table:

-In-depth knowledge of CISCO including firewalls, switches and routing protocols

-In-depth knowledge of supporting a data-centre and branch inter-connectivity

-Strong technical skills are essential

-Experience of CISCO multi-layer switches and routers, including 6500s

-CISCO certification, ideally CCNP

-CISCO CSM

-VLAN segregation

-McAfee HIPS, Trend Micro

-Centralised authentication service (AAA)

-SafeNet Ethernet Encryptor

-RADIUS / RSA

-Security certification (advantageous)

You will also need to an understanding of the following technologies:

VLAN segregation. DMZ. VSS. Failover. OSPF. High availability.

CISCO. Palo Alto. Juniper. McAfee IPS. SafeNet. Tripwire.

You will ideally be coming with experience from a City based investment bank.

Salary for this role is between 60K and 70K plus banking benefits.

Please send your CV to us in Word format.