Senior Network Engineer

ARO Technology

. Act as a senior technical escalation point for complex network incidents, service requests and infrastructure issues.

Posted 11/6/2026full-timeLiverpool • United KingdomSenior💰 £50,000 - £60,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in managing and supporting complex network infrastructures, particularly with Fortinet solutions, while ensuring high availability and security. Proficient in troubleshooting, documentation, and mentoring within a service-focused environment.

Highest-signal resume keywords

Fortinet Network SolutionsNetwork TroubleshootingSD-WAN TechnologiesNetwork Security ControlsITIL-Based Environments

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

LAN TechnologiesWAN TechnologiesVPN TechnologiesWLAN TechnologiesData Centre NetworkingRoot Cause AnalysisNetwork AutomationNetwork MonitoringFirewall Policy ManagementTechnical Documentation

Soft Skills

Analytical SkillsProblem-Solving SkillsMentoringCustomer Relationship ManagementCollaboration

Tools & Technologies

FortiGateFortiManagerFortiAnalyzerPRTGSolarWindsLogicMonitorPythonAnsibleAPIsInfrastructure-as-Code

Certifications & Qualifications

ISO 27001Cyber Essentials PlusNHS DSPT

Industry Keywords

NHSHealthcarePublic-SectorRegulated EnvironmentsNetwork Transformation

Tech Stack

Tools & technologies

AnsibleCloudPython

About the role

Key responsibilities & impact

Act as a senior technical escalation point for complex network incidents, service requests and infrastructure issues.
Support and develop enterprise networking solutions spanning data centre, WAN, SD-WAN, security and customer connectivity services.
Manage, support and configure network infrastructure, focusing on FortiGate, FortiManager and FortiAnalyzer.
Lead investigation and resolution of complex networking issues.
Support major incident response with customers, vendors and internal teams.
Deliver network deployments, upgrades, migrations and customer onboarding projects.
Implement technical standards, improve network resilience and evolve service architecture.
Produce and maintain technical documentation, designs, implementation plans, test plans and rollback procedures.
Contribute to project planning, technical design reviews, testing and delivery.
Perform root cause analysis and implement preventative and corrective actions.
Support firmware upgrades, vulnerability remediation, capacity planning and technical risk reduction.
Enhance network performance, security, automation, monitoring and operational efficiency.
Ensure services are documented, monitored and transitioned into operational support.
Build relationships with customers, colleagues, technology partners and vendors across NHS, healthcare and public-sector environments.
Mentor Tier 1 engineers and share technical knowledge.
Maintain technical expertise through training, certifications and hands-on experience.
Participate in the on-call rota and planned out-of-hours activities.

Requirements

What you’ll need

Proven experience in a Network Engineer, Senior Network Engineer or equivalent role.
Strong troubleshooting and operational support experience across LAN, WAN, VPN, WLAN and data centre networking technologies.
Hands-on experience administering and supporting Fortinet network and security solutions, including FortiGate, FortiManager and FortiAnalyzer.
Experience managing firewall policies, VPNs, network security controls and troubleshooting complex connectivity issues.
Knowledge and experience of SD-WAN technologies and multi-site network environments.
Experience supporting highly available, resilient and secure network infrastructure.
Ability to investigate, troubleshoot and resolve complex incidents and service-impacting issues.
Experience working within structured change management and ITIL-based environments.
Strong documentation skills, including network diagrams, design documentation, implementation plans and operational procedures.
Experience working with customers, vendors and internal stakeholders in a service-focused environment.
Strong analytical, problem-solving and root cause analysis skills.
A full UK driving license and access to a vehicle is needed for this role.
Desirable: experience supporting NHS, clinical, public-sector or other regulated environments.
Desirable: knowledge of VXLAN, EVPN, spine-and-leaf or fabric-based network architectures.
Desirable: experience with cloud networking technologies and hybrid connectivity solutions.
Desirable: experience with network automation using Python, Ansible, APIs or infrastructure-as-code approaches.
Desirable: knowledge of ISO 27001, Cyber Essentials Plus and NHS DSPT requirements.
Desirable: experience with network monitoring and observability platforms such as PRTG, SolarWinds, LogicMonitor or equivalent.
Desirable: experience contributing to network transformation, migration or infrastructure refresh projects.
Desirable: experience mentoring junior engineers or acting as a technical escalation point.

Benefits

Comp & perks

Company Pension Scheme and matching contributions
Company Perks portal
Private Medical insurance
Life assurance
25 days holiday plus bank holidays plus holiday trading
Your Birthday off
Health Club and Wellbeing Scheme
ARO Shares after 12 months employment
Employee Assistance Programme
Technical Training Academy and E-learning
Hybrid working