Senior Network Engineer

Walkers; Greater London; On-site; GBP 70,000 - 110,000; Full time

Job summary

Walkers, a leading international law firm, is seeking a Senior Network Engineer based in London to manage and maintain our global network infrastructure. The role sits within the 24/7 IT Infrastructure team and focuses on Azure Networking, WAN/LAN, and security across the enterprise.

The ideal candidate will have extensive experience with Cisco, Palo Alto, Meraki, and cloud networking, and hold relevant certifications.

Qualifications

• University degree in Computer Science or equivalent experience.
• Relevant certifications such as PCNSE, CCNP or CCIE.
• Proven experience in a senior network role.

Responsibilities

• Manage and maintain Azure Firewalls, VPN Gateway and Azure Networking components.
• Install and configure routers, switches, firewalls and related equipment.
• Inspect and maintain network cabling and related equipment.
• Monitor network performance across LAN, WAN and wireless deployments; identify bottlenecks.
• Plan and implement improvements to network infrastructure while adhering to standards.
• Establish connectivity and uptime SLAs.
• Ensure stable operation and efficient performance of company networks.
• Collaborate with the infrastructure team for global system stability and availability.
• Participate in projects and research on network products and standards.
• Enforce standards in equipment rooms, data-centres, cabling and records.
• Assist with annual IT budget requirements.
• Carry out other duties commensurate with the role.

Skills

Azure Networking

Network Troubleshooting

Security

Cloud Networking

Cisco/Palo Alto knowledge

Education

University degree in Computer Science

Palo Alto PCNSE

Cisco CCNP/CCIE

Tools

Logic Monitor

Datadog

SolarWinds

Grafana

Network Config Manager

Job description

We are a leading international law firm for global corporations, financial institutions, capital market participants and investment fund managers. With a global presence spanning the Americas, Europe, the Middle East and Asia, we advise on the laws of Bermuda, the British Virgin Islands, the Cayman Islands, Guernsey, Ireland and Jersey.

We treat everyone as the intelligent professional they are. Our approach is to trust and empower our people to deliver consistently, and enable them to succeed. Diversity is our secret weapon – it’s the sheer breadth of Walkers people that makes us who we are – gathered from across the globe and fluent in languages, jurisdictions and cultures that help us to mirror our clients and keep our own thinking in tune with the world in which we operate.

Overview Of Role

This requirement is for a Senior network engineer based within the London office location working as part of the global 24/7 IT Infrastructure team.

The “Senior Network Engineer" role is responsible for the management and ongoing maintenance of network systems technologies across the Walkers enterprise. The role requires activity in the planning, developing, installing, configuring, maintaining, supporting and optimising all local and global wide area network services, associated software and communication links. This person will also troubleshoot network performance issues, as well as analyse and monitor network traffic.

Core technologies for which the incumbent is responsible include networking hardware and software, WAN\LAN technologies and communication systems. The incumbent will work as part of the team within the global IT function to ensure the network enterprise is managed and remains available 24/6/365.

This is a hands‑on role, and in-depth technical knowledge is required with respect to a number of core networking devices including Cisco, HPE, Aruba & Nexus switches and Access Points, Cisco Meraki Wi‑Fi, Palo Alto Firewalls and Azure Networking technologies.

Please note there is a strong emphasis on Azure Networking Skills and it’s a must have for this role.

Duties, Responsibilities & Person Specification

• Manage and maintain Azure Firewalls, VPN Gateway. Manage Azure Networking components including VNETs, peering, UDRs, service endpoints, landing zones, Azure vWAN and configuring Express Route etc.
• Install and configure network hardware and equipment, including routers, switches, firewalls and any other relevant ancillaries typical to the role.
• Inspect, maintain, and where necessary replace network cabling and other network-related equipment.
• Perform scheduled monitoring and analysis of all aspects of network performance across the organization’s LAN, WAN, and wireless deployments. Identify and remedy network performance bottlenecks and recommend enhancements to meet new or changing network demands.
• Plan and implement any improvement, modification, or replacement of network infrastructure components whilst ensuring adherence to industry standards.
• Establish connectivity and uptime service level agreements.
• Ensure the stable operation and efficient performance of company networks.
• Ensure network and IP connectivity of all workstations, application servers, and back‑end office infrastructure.
• Work closely with the infrastructure team to deliver global system stability and availability.
• Participate in projects, conduct research on network products, services, protocols, and standards in support of network procurement and development efforts.
• Enforce the default levels and standards expected within technology equipment rooms, data‑centres, equipment racks, cabling standards, patching and records keeping.
• Assist with any relevant annual IT budget requirements.
• Carries out any other duties commensurate with the purpose of the job.

Education, Skills & Experience

• University degree in Computer Science or other relevant discipline or equivalent experience.
• Relevant professional certifications to validate the skills required to manage the above technologies, for example: Palo Alto PCNSE, HP Aruba ACSA or ASA, Cisco CCNP or CCIE certification.
• Proven experience in a Senior Network Role.
• Extensive experience of network systems, global configuration standards, relevant protocols and standards across all leading vendor products and services within the enterprise space.
• Experience of software defined and cloud‑based networking.
• Experience working in an enterprise level global networking role.
• Experience troubleshooting complex hardware, software and networks.
• Experience of existing global hardware products including Cisco, Palo Alto, Nexus, Aruba, Meraki, SD-WAN etc.
• Experience of network management and analysis tools, including Logic Monitor, Datadog, Solarwinds, Grafana, Network Config Manager and other equivalent market products.
• Knowledge of IDS/IPS/AV and other network security measures.
• Knowledge of applicable data privacy practices and laws.
• Knowledge of industry standards and roadmaps applicable to the off‑shore industry.

Other Requirements

• Ability to work in an on‑call support function within the team to provide 24/7/365 outside of core working hours through a structured team rota system.
• Ability to travel if required both regionally and globally for working needs.

Walkers global is an equal opportunity employer. Equality and diversity are key to our global identity and an integral part of our goal to continue being an employer of choice. We are committed to a work environment that supports all individuals irrespective of gender, ethnicity, nationality, race, religion, marital status, age, disability, pregnancy, sexual orientation, gender identity or any other applicable legally protected characteristics. We make every effort to ensure that employment opportunities are open and accessible to all purely on the basis of personal ability.