Network Engineer L3

Salary: £36,000 - 76,000 per year

Requirements:

• We require 4+ years of hands-on experience in network engineering, including advanced support and implementation in regulated or financial environments.
• We need a strong understanding of network principles, design, operational environments, and compliance requirements.
• We require proven experience with complex incident resolution, change management, and performance optimisation.
• We need experience with data centre network technologies and cloud and security services, including Azure, AWS, load balancing, and DNS.
• We require familiarity with ITSM workflows, SDWAN/VPN concepts, and ServiceNow.
• We need experience with SASE management such as Fortinet or Netskope.
• We require fluent written and spoken English, with the ability to produce audit-ready documentation and communicate confidently with senior and executive stakeholders.
• We consider hands-on provisioning and troubleshooting with voice technologies such as Avaya and Cisco Call Manager highly desirable.
• We consider relevant certifications such as CCNP, Fortinet NSE5/7, Meraki ECMS2, and F5 highly desirable.
• We consider experience in managed service or telecom environments, especially supporting financial services clients, highly desirable.
• We consider experience with SolarWinds, Infoblox, Zero-Touch Deployment, and automation tools highly desirable.

Responsibilities:

• We diagnose and resolve complex incidents across SDWAN, WAN, LAN/WLAN, VPN/SASE, and load-balancing platforms while ensuring compliance with financial services regulations.
• We implement network configuration changes using approved templates and security baselines, maintaining audit trails.
• We validate device configurations, firmware posture, and compliance with golden standards and sector-specific requirements.
• We support onboarding of new sites and services using Zero-Touch Provisioning and Infrastructure-as-Code pipelines.
• We manage routing policies, QoS, wireless performance tuning, and load balancer configuration updates.
• We collaborate with vendor management teams on escalated transport or device issues, ensuring regulatory requirements are met.
• We contribute to CMDB enrichment through topology validation and asset reconciliation.
• We support automated impact assessments and change risk analysis, with a focus on operational resilience.
• We participate in continuous service improvement initiatives, including monitoring optimisation and capacity analysis.
• We provide technical guidance and mentoring to Level 2 engineers.
• We ensure all network operations adhere to financial services regulations and frameworks such as FCA, PRA, DORA, ISO 27001, and SOC.
• We maintain documentation and audit trails for all changes, incidents, and compliance activities.
• We support risk assessments, compliance reviews, and operational audits as required.
• We integrate regulatory requirements and security controls into network designs and operations.
• We maintain accurate incident, request, and change records in ServiceNow.
• We produce and present operational reports, dashboards, and summaries for internal and customer stakeholders, highlighting compliance, risk management, and performance.
• We support governance initiatives including process improvement, risk analysis, and post-implementation reviews.

Technologies:

• AWS
• Azure
• Cloud
• CMDB
• Cisco
• Firmware
• Support
• ITSM
• LAN
• Load Balancing
• Network
• SDWAN
• Security
• ServiceNow
• VPN
• WLAN
• Ansible
• CI/CD
• NAT
• Python
• Terraform

More:

We are a financial services-focused network operations team working in a regulated environment where compliance, operational resilience, and audit readiness are critical. We operate on standard business hours with participation in an on-call rota as required, and occasional weekend engineering coverage for planned business continuity, resilience testing, or disaster recovery activities. We are looking for a technical leader who is passionate about advanced troubleshooting, optimisation, mentoring, and delivering secure, compliant network services.

last updated 31 week of 2026