Senior L4 Network Architect — Finance, Multi-Vendor

Claranet Limited; Gloucester; On-site; GBP 85,000 - 120,000; Full time

Job summary

Claranet Limited is seeking an L4 Network Specialist to provide technical leadership, architectural governance, and expertise for a global financial services network portfolio. The role focuses on standard setting, advanced troubleshooting, and evolving strategy in highly regulated environments.

Strong Netskope experience and experience migrating/transforming at engineering level are essential. You will mentor engineers, guide SDWAN/WAN/LAN/VPN/SASE deployments, and contribute to security and

Qualifications

• 7+ years' hands-on experience in network engineering, architecture, and support within financial services or regulated environments.
• Proven experience defining standards, leading complex troubleshooting, and driving network evolution.
• Advanced technical knowledge across SDWAN, WAN, LAN/WLAN, VPN/SASE, load-balancing, and security platforms.
• Strong understanding of compliance, risk management, and regulatory frameworks.
• Effective communicator, able to engage stakeholders and lead governance activities.

Responsibilities

• Lead complex troubleshooting and root cause analysis across multi-vendor network domains, acting as the highest escalation point.
• Define and maintain configuration standards, security baselines, and golden templates to ensure regulatory compliance.
• Oversee lifecycle management including firmware governance, vulnerability remediation, and audit readiness.
• Lead, mentor and develop L1-L3 engineers, using structured coaching and feedback to drive performance.
• Provide design assurance for new deployments and service modernisation across SDWAN, WAN, LAN/WLAN, VPN/SASE, and load-balancing.
• Support automation initiatives including IaC pipelines, compliance validation, and drift detection.
• Drive monitoring and telemetry enrichment strategies to improve MTTR.

Skills

Multi-vendor networking

Cisco

Fortinet

F5

SASE platforms

Routing & design

BGP/OSPF/ACLs/NAT

Network security

Automation: Python

Terraform

Ansible

CI/CD for network infra

Stakeholder governance

Regulatory compliance

English communication

Tools

Infoblox

SolarWinds

ServiceNow

Terraform

Ansible

CI/CD pipelines

Job description

Claranet Limited is seeking an L4 Network Specialist to provide technical leadership, architectural governance, and expertise for a global financial services network portfolio. The role focuses on standard setting, advanced troubleshooting, and evolving strategy in highly regulated environments.

Strong Netskope experience and experience migrating/transforming at engineering level are essential. You will mentor engineers, guide SDWAN/WAN/LAN/VPN/SASE deployments, and contribute to security and