Senior Network Engineer - ACI / Firewall

World Wide Technology; Greater London; On-site; GBP 80,000 - 110,000; Full time

Job summary

World Wide Technology is seeking an experienced Network Engineer in Greater London to support BAU incident resolution and troubleshooting for a merged banking network environment. This is an operations-focused role, not primarily a project deployment position.

You will handle mixed security/network stack troubleshooting, participate in after-hours changes, and contribute to stabilizing access and systems post-merger, with on-call coverage by the NOC as needed.

Qualifications

• 8+ years experience in Network implementation / Support role.
• Strong troubleshooting skills across a mixed security/network stack.
• High attention to detail and a strong work ethic — attitude matters as much as certifications.
• Comfortable joining a team still consolidating access/systems post-merger.
• Mix of ticket/incident resolution and occasional project work.
• Participation in scheduled out-of-hours changes (Fri night–Sun), workload shared across team.
• NOC handles primary on-call coverage.

Responsibilities

• Operations-focused network security engineer to support BAU incident resolution and troubleshooting for a merged banking network environment.

Skills

CCNP/CCIE

Cisco Catalyst Switches

Job description

World Wide Technology (WWT) is a global technology solutions provider leading the AI and digital revolution — helping organizations design, build and run the infrastructure that powers their business. We bring strategy and execution together, at scale, to make a new world happen.

World Wide Technology (EMEA) is looking for a highly skilled Network Engineer to support a ACI fabrics implementation program.

Role Overview

Operations-focused network security engineer to support BAU incident resolution and troubleshooting for a merged banking network environment, following the merger of two banks' networking teams. This is not primarily a project/deployment role.

Key Requirements

• 8+ years experience in Network implementation / Support role.
• Strong troubleshooting skills across a mixed security/network stack
• High attention to detail and a strong work ethic — attitude matters as much as certifications
• Comfortable joining a team still consolidating access/systems post-merger
• Mix of ticket/incident resolution and occasional project work
• Participation in scheduled out-of-hours changes (Fri night–Sun), workload shared across team
• NOC handles primary on-call coverage

Skills required

• CISCO CCNP / CCIE
• Cisco Catalyst Switches