Senior Network Security Engineer - Banking & Data Centre

Nexus Jobs; Greater London; On-site; GBP 58,000 - 98,000; Full time

Job summary

Nexus Jobs in London is seeking a Senior Network Engineer to design, implement and secure large-scale networks in a banking environment. You will contribute to high-availability, data-centre, and branch interconnectivity across Cisco platforms, with a focus on perimeter and DMZ protection.

The ideal candidate has CCNP (or equivalent), strong experience with OSPF, VLAN segmentation, and RADIUS/RSA, plus familiarity with McAfee HIPS and Trend Micro. This is a permanent, full-time role.

Qualifications

• Senior network engineer with strong background in network security across Cisco and Microsoft environments.
• Experience in banking environment, ideally City-based investment bank.
• Experience in mission-critical environments and operational deployments.
• In-depth knowledge of Cisco technologies, including firewalls, switches, and routing protocols.
• Experience supporting data centre and branch interconnectivity.
• Cisco certification, ideally CCNP.
• Experience with VLAN segregation, DMZ, VSS, failover, OSPF, and high availability.
• Familiarity with McAfee HIPS, Trend Micro, centralized authentication services (AAA), SafeNet Ethernet Encryptor, and RADIUS/RSA.
• Security certification is advantageous.

Responsibilities

• Support and deliver all aspects of BAU and support services within our infrastructure team.
• Design, build, and implement firewall solutions from perimeter to DMZ roles.
• Support IPS deployment for our European branches.
• Develop, maintain, and deliver global standards across our networking devices.
• Remediate penetration test results.
• Ensure seamless migration of our network estate to our newly adopted security framework.
• Diagnose issues quickly, assist others, and remediate BAU support issues.
• Work on scalable solutions delivered through projects.
• Handle datacentre cabling and racking of equipment.

Skills

Cisco networking

Network security

CCNP

OSPF

High availability

RADIUS/RSA

AAA

VLAN segregation

Tools

McAfee HIPS

Trend Micro

SafeNet Ethernet Encryptor

Job description

Nexus Jobs in London is seeking a Senior Network Engineer to design, implement and secure large-scale networks in a banking environment. You will contribute to high-availability, data-centre, and branch interconnectivity across Cisco platforms, with a focus on perimeter and DMZ protection.

The ideal candidate has CCNP (or equivalent), strong experience with OSPF, VLAN segmentation, and RADIUS/RSA, plus familiarity with McAfee HIPS and Trend Micro. This is a permanent, full-time role.