Network Engineer

Marks Sattin; Greater London; In loco; GBP 90.000 - 120.000; Tempo pieno

Descrizione del lavoro

Marks Sattin, a global financial services organisation, seeks a Network Engineer to lead design, deployment, and evolution of its world-wide network spanning data centres, trading environments and enterprise locations.

You will own end-to-end network project delivery, guide third-party connectivity turn-ups, and act as the senior technical escalation point for major incidents, driving automation and AI-enabled improvements.

Competenze

• CCNP Routing & Switching or equivalent
• Foundational wireless certification required
• Degree in Computer Science/Engineering or equivalent
• Strong routing/switching design across Junos, Arista EOS, Cisco IOS (BGP/OSPF/EIGRP)
• Hands-on EVPN/VXLAN design on Arista
• Knowledge of Palo Alto firewalls and F5 load balancers preferred
• Automation/scripts using Python and Ansible in production networks
• Calm under pressure with incident leadership, RCA, remediation
• Experience mentoring and producing clear technical docs

Mansioni

• Design and implement data centre and enterprise network solutions (new builds, refreshes, migrations)
• Deliver end-to-end projects: HLD/LLD, build, testing, cutover, handover
• Turn up and support third-party services including CDN, extranet, VPN
• Lead routing and switching design across Juniper, Arista, Cisco platforms
• Design, build and support EVPN/VXLAN fabrics using Arista EOS
• Act as senior escalation for major incidents: triage, RCA, fixes
• Build and maintain automation/tools using Python, Ansible, Git
• Improve observability and operations with Grafana, Splunk, ServiceNow, AI tools
• Maintain infrastructure hygiene: upgrades, EOL, audits
• Mentor junior engineers and ensure cross-region handovers

Conoscenze

CCNP Routing & Switching

EVPN/VXLAN

Python

Ansible

Documentation

BGP/OSPF/EIGRP

Incident leadership

Formazione

Degree in Computer Science/Engineering

Strumenti

Arista EOS

Junos

Cisco IOS

Descrizione del lavoro

A global, high-performance financial services organisation is seeking a Network Engineer to lead the design, deployment, and ongoing evolution of its worldwide network estate spanning data centres, trading environments, and enterprise locations.

This role will take end-to-end ownership of network project delivery, oversee third-party connectivity turn-ups, and act as the senior technical escalation point for complex incidents—while driving automation and AI-enabled operational improvements.

What you’ll be doing

• Design and implement data centre and enterprise network solutions (new builds, refreshes, migrations).
• Deliver projects end-to-end: HLD/LLD documentation, build, testing, cutover, and operational handover.
• Turn up and support third-party services, including CDN, extranet, and VPN connectivity.
• Lead routing and switching design across Juniper, Arista, and Cisco platforms (BGP, OSPF, EIGRP, redistribution, filtering/policy).
• Design, build and support EVPN/VXLAN fabrics using Arista EOS.
• Act as senior escalation for major/complex incidents: triage, RCA, and permanent fixes.
• Build and maintain automation/tooling using Python, Ansible, and Git to reduce manual effort.
• Improve observability and operations using Grafana, Splunk, ServiceNow, and apply AI tools for proactive troubleshooting.
• Maintain infrastructure hygiene: code upgrades, EOL replacements, audits, and standards adherence.
• Mentor junior engineers and ensure strong documentation and cross-region handovers.

What we’re looking for

• CCNP Routing & Switching (or equivalent capability).
• Foundational wireless certification (required).
• Degree in Computer Science/Engineering (or equivalent practical experience).
• Strong routing/switching design background across Junos, Arista EOS, Cisco IOS (BGP/OSPF/EIGRP).
• Hands-on EVPN/VXLAN design and implementation experience on Arista.
• Working knowledge of Palo Alto firewalls and F5 load balancers.
• Proven automation/scripting experience using Python and Ansible in production network environments.
• Calm under pressure with a track record in incident leadership, RCA, and remediation.
• Experience mentoring others and producing clear, high-quality technical documentation.