Senior Network Engineer

ARO; Liverpool; Hybrid; GBP 54,000 - 66,000; Full time

Benefits offered by this job

Private medical insurance

Company pension

Hybrid working

25 days holiday + bank holidays

ARO Shares after 12 months

Job summary

ARO is seeking a Senior Network Engineer in Liverpool for a hybrid role combining three days in the office with two remote days. You will support and evolve enterprise network infrastructure, spanning data centres, WAN, SD-WAN, security and customer connectivity across UK NHS and public-sector services.

You will lead complex incidents, contribute to major improvement initiatives, and work with Fortinet technologies (FortiGate, FortiManager, FortiAnalyzer) to ensure high availability, security

Qualifications

• Proven experience as a Network Engineer or Senior Network Engineer.
• Strong troubleshooting and operational support across LAN/WAN/VPN/WLAN and data centre networking.

Responsibilities

• Act as a senior escalation point for complex network incidents and requests across NHS/public-sector environments.
• Lead investigations, document outcomes and coordinate with stakeholders to resolve issues.
• Deliver network deployments, upgrades and migrations per approved designs and change controls.
• Mentor junior engineers and contribute to team knowledge sharing.

Skills

Fortinet FortiGate

Fortinet FortiManager

Fortinet FortiAnalyzer

WAN

Data centre networking

Troubleshooting

ITIL

Security policies

Multi-site networks

Tools

Fortinet Suite

VPN

SD-WAN

Job description

Job Title: Senior Network Engineer

Location: Liverpool (Hybrid)

Salary: Up to £60,000 DOE

Contract type: Permanent

Join ARO's Specialist Data Services (SDS) team and play a key role in supporting and evolving the network infrastructure that underpins critical NHS, healthcare and public-sector services across the UK.

We're looking for an experienced Senior Network Engineer to provide technical expertise across a complex, enterprise-scale environment spanning data centre networks, WAN, SD-WAN, security, and customer connectivity solutions. This is an exciting opportunity to work with industry-leading technologies, including the Fortinet security stack, with significant exposure to FortiGate, FortiManager and FortiAnalyzer within highly resilient and security-focused environments.

As a Senior Network Engineer, you'll act as a key technical escalation point within the SDS networking team, taking ownership of complex incidents, service requests and infrastructure challenges through to resolution. Working closely with Lead and Principal Network Engineers, you'll contribute to major incident management, network improvement initiatives, customer onboarding projects, infrastructure upgrades and service transformation activities, helping to ensure the performance, availability and security of business-critical services.

The role offers a balance of operational support, project delivery and continuous improvement, providing the opportunity to work on everything from troubleshooting complex network issues to implementing new customer solutions and enhancing existing platforms. You'll be part of a collaborative team that values technical excellence, innovation and professional development, with opportunities to further develop your expertise in Fortinet technologies and enterprise networking.

Based primarily within our Liverpool Network Operations Centre, this hybrid role combines three days in the office with two days working remotely, alongside occasional visits to our Runcorn data centre and customer sites as required. A full UK driving license and access to a vehicle is needed for this role.

What you'll do

• Act as a senior technical escalation point for complex network incidents, service requests and infrastructure issues across SDS-managed customer and hosted environments
• Support and develop enterprise networking solutions spanning data centre, WAN, SD-WAN, security and customer connectivity services.
• Manage, support and configure network infrastructure, with a strong focus on the Fortinet ecosystem including FortiGate, FortiManager and FortiAnalyzer.
• Lead the investigation and resolution of complex networking issues, ensuring accurate documentation, effective communication and timely resolution.
• Support major incident response activities, working collaboratively with customers, vendors and internal teams to restore critical services.
• Deliver network deployments, upgrades, migrations and customer onboarding projects in line with approved designs and change controls.
• Work closely with Lead and Principal Network Engineers to implement technical standards, improve network resilience and evolve service architecture.
• Produce and maintain high-quality technical documentation, including high-level and low-level designs, implementation plans, test plans and rollback procedures.
• Contribute to project planning, technical design reviews, testing and successful delivery of network and infrastructure initiatives.
• Perform root cause analysis on service-impacting incidents and support the implementation of preventative and corrective actions.
• Support lifecycle management activities, including firmware upgrades, vulnerability remediation, capacity planning and technical risk reduction.
• Identify opportunities to enhance network performance, security, automation, monitoring and operational efficiency.
• Ensure new and updated services are fully documented, monitored and successfully transitioned into operational support.
• Build strong working relationships with customers, colleagues, technology partners and vendors across NHS, healthcare and public-sector environments.
• Mentor Tier 1 engineers and share technical knowledge to support team development and growth.
• Maintain and develop technical expertise through training, certifications and hands-on experience with emerging technologies.
• Participate in the on-call rota and support planned out-of-hours activities where required.

Essential

• 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.

Desirable

• Experience supporting NHS, clinical, public-sector or other regulated environments, ideally within hosted data centre or managed service environments.
• Knowledge of VXLAN, EVPN, spine-and-leaf or fabric-based network architectures.
• Experience with cloud networking technologies and hybrid connectivity solutions.
• Experience with network automation using Python, Ansible, APIs or infrastructure-as-code approaches.
• Knowledge of ISO 27001, Cyber Essentials Plus and NHS DSPT requirements.
• Experience with network monitoring and observability platforms such as PRTG, SolarWinds, LogicMonitor or equivalent solutions.
• Experience contributing to network transformation, migration or infrastructure refresh projects.
• Experience mentoring junior engineers or acting as a technical escalation point within a support team.

Who are we?

ARO has 25 years' experience in Collaboration, Connectivity, Cloud and Infrastructure and Cyber Security services both in the UK and Internationally and has a nationwide presence with offices across the UK.

As one of the UK's leading independent IT and communication experts our mission is to deliver a seamless technology experience to all end users. To make that vision a reality, we need bright, tenacious and inspiring talent to help drive our performance, growth and achieve this mission.

To make us successful we focus on strong communication, a culture based on fun, trust and collaboration. We have created a modern workplace environment, which is full of engaged, energetic, positive and curious people whose productivity, resilience and wellbeing allow them to thrive.

In 2021 we were awarded the People Insight's Outstanding Workplace Award, which celebrates organisations building positive workplace cultures and acting on employee feedback to spark positive change.

Why Work for ARO?

At ARO we are committed to creating an excellent employee experience. Our employees, culture and additional benefits all make ARO a great place to work. Come join us!

We offer a wide range of benefits and incentives to our employees including:

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, on us

Health Club and Wellbeing Scheme

ARO Shares after 12 months employment

Employee Assistance Programme

Technical Training Academy and E-learning

Hybrid working