Senior Network Administrator

McLarens Group; Greater London; On-site; GBP 70,000 - GBP 90,000; Full time

Job summary

An independent global insurance services provider is seeking a highly experienced Senior Network Administrator to focus on cloud-based infrastructure, especially Microsoft Azure. Candidates should have a minimum of 10 years in enterprise network administration and at least 3 years of hands-on experience with Palo Alto firewalls. Responsibilities include architecting Azure networks, leading migration efforts, and implementing Zero Trust security. This role is key in ensuring secure and scalable network connectivity across a global footprint.

Qualifications

• 10+ years of enterprise network administration experience.
• At least 3 years of experience with Palo Alto firewalls.
• Strong documentation skills for network architecture.

Responsibilities

• Architect, deploy, and manage Azure-based network infrastructure.
• Lead network migration from on-prem to Azure cloud.
• Implement modern Zero Trust architectures and secure access controls.

Skills

Palo Alto firewalls

Microsoft Azure

Cloud-based infrastructure

Network security

Zero Trust architectures

Tools

Palo Alto Networks

Azure Monitor

Panorama

GlobalProtect

Meraki

Job description

Established in 1932, McLarens is a premier independent global insurance services provider with a widespread global presence. Specialising in complex, commercial, and niche markets, the company offers comprehensive loss adjusting, claims, and risk management services, along with forensic technical services, auditing, and pre-risk surveying. McLarens' extensive global network allows for consistent service delivery to clients globally, while also providing localized expertise and responsive support. Our seasoned adjusters boast an average of over 20 years of experience, catering to various industries with expertise in Property, Casualty, Crisis Management, Natural Resources, Construction & Engineering, Agriculture, Aviation, Forensic Accounting, Investigation, Marine, FAJ & Specie, Global TPA Services, and Environmental consulting services.

The professionals at McLarens live by a set of shared values that guide their actions and behaviors:

EXCELLENCE – We aim for nothing less than the highest standards in everything we do.

TEAMWORK – We work best when we work together with clients, colleagues, and suppliers alike.

RESPECT – We are trusted to keep our promises, act with integrity, and treat people the right way.

KNOWLEDGE – We know our market better than anyone, but still, we never stop developing.

THOUGHT LEADERSHIP – We use inspired thinking and pioneering solutions to stay ahead in an ever-changing market.

ACCOUNTABILITY – We move with urgency to deliver on our commitments and drive for results, even amid ambiguity.

Position Overview

We are seeking a highly experienced Senior Network Administrator with a strong focus on cloud-based infrastructure, particularly Microsoft Azure. The ideal candidate will bring 10+ years of enterprise network administration experience, with at least 3 years of hands-on expertise in Palo Alto firewalls and application-layer security.

This role is pivotal in supporting our cloud-first strategy and leading network transition/migration projects, ensuring secure, scalable, and high-performing connectivity across a global footprint. Experience with Palo Alto's extended security suite, including GlobalProtect, Prisma Access, Panorama, Cortex Data Lake, and DLP, is essential.

Key Responsibilities

• Architect, deploy, and manage Azure-based network infrastructure, including VNets, Azure Firewall, Application Gateway, NSGs, Load Balancers, Private Endpoints, VPN, and ExpressRoute.
• Support and lead network migration and transformation initiatives, especially from on-prem to Azure cloud.
• Configure, manage, and optimize Palo Alto Networks firewalls, including centralized management using Panorama and security extension through Prisma Access.
• Deploy and administer GlobalProtect for secure remote access across endpoints and locations.
• Leverage Cortex Data Lake for threat visibility and log analytics; implement and monitor Data Loss Prevention (DLP) policies.
• Collaborate with cloud, application, and infrastructure teams to align networking with business services.
• Implement modern Zero Trust architectures, segmentation, and secure access controls.
• Monitor network health, security events, and performance using Azure Monitor, Network Watcher, or third-party tools.
• Manage connectivity and SLAs with ISPs and cloud providers globally.
• Contribute to business continuity planning with cloud-first DR and failover strategies.
• Cloud Networking: Advanced knowledge of cloud networking components and architecture. (Azure preferred)
• Cloud Migration/Transition Projects: Demonstrated success in leading or supporting network transition efforts to Azure or hybrid environments.
• Palo Alto Ecosystem: Deep experience with Palo Alto firewalls, Panorama, Prisma Access, GlobalProtect, Cortex Data Lake, and DLP.
• Application Layer Security: Proven experience configuring Layer 7 security and App-ID, Content-ID, and User-ID policies.
• WAF & Zero Trust Implementations: Hands-on with WAF deployments (CloudFlare or 3rd party) and Zero Trust frameworks.
• GlobalProtect: Configuration and support of GlobalProtect VPN for secure, scalable remote workforce access.
• Monitoring & Alerting: Network monitoring and alerting via Azure-native or external tools.
• Branch & Remote Site Networking: Management of distributed office networks, and site-to-site VPNs.
• Meraki Infrastructure: Familiarity with Meraki switches, APs, and firewalls.
• Network Inventory & Documentation: Strong documentation skills for network architecture and asset tracking.

Required Certifications

• Palo Alto Networks Certified Network Security Engineer (PCNSE)
• Azure Network Engineer Associate or equivalent certification
• Bonus: Azure Solutions Architect Expert or similar advanced cloud certifications

Our Company is an equal employment opportunity employer. The Company’s policy is not to discriminate against any applicant or employee based on race, color, sex, sexual orientation, gender identity, genetic information, religion, national origin, age, disability, veteran status, or any other basis protected by applicable federal, state, or local laws. The Company also prohibits harassment of applicants or employees based on any of these protected categories.