Senior Network Engineer

Job Summary:

As a Senior Network Engineer, you will lead the design, implementation, and support of enterprise network infrastructure across our UK data center and office environments. This role is focused on data center networking, load balancing, and core network services, ensuring high availability, performance, and security across all platforms.

Job Description:

Exciting Opportunity: Senior Network Engineer

Are you a seasoned network professional ready to lead the design, implementation, and evolution of enterprise network infrastructure? We are seeking a Senior Network Engineer to drive the planning, deployment, and optimization of our critical IT and security platforms. In this role, you’ll architect solutions, mentor team members, and ensure the seamless delivery of secure, reliable services across the organization.

About Us:

Join a forward-thinking company committed to pushing the boundaries of technology and driving innovation. Our team is made up of passionate individuals who thrive in a collaborative environment and are dedicated to shaping the future of our industry.

Your Role:

As a Senior Network Engineer , you will lead the design, implementation, and support of enterprise network infrastructure across our UK data center and office environments. This role is focused on data center networking, load balancing, and core network services, ensuring high availability, performance, and security across all platforms.

What You’ll Do:

Strategic Support & Risk Awareness

Proactively identify operational risks, performance issues, and security gaps within network and infrastructure environments

Monitor trends, alerts, and emerging technologies to support continuous improvement of network reliability and security

Contribute technical input to infrastructure and network strategy under the direction of IT leadership

Network Design & Implementation

Design, configure, and support enterprise network infrastructure across UK-based data centers and offices

Implement and maintain FortiGate firewalls, including policies, NAT, and high-availability configurations

Deploy and support FortiADC load balancers, including application delivery, traffic distribution, and high-availability designs

Configure and manage Dell L2/L3 switching environments, including VLANs, trunking, and inter-VLAN routing

Design and maintain core routing architecture using protocols such as OSPF

Provide secure VPN access into the data center for administrative and operational access

Operations & Troubleshooting

Provide advanced troubleshooting across routing, switching, firewalls, and load balancing platforms

Support network monitoring, logging, and alerting to ensure high availability and performance

Participate in incident response and root cause analysis for network-related outages

Security & Compliance

Implement and maintain network security controls aligned with ISO 27001 and Cyber Essentials Plus

Ensure proper segmentation, VLAN design, and access controls across environments

Support audit activities through documentation, configurations, and evidence collection

Change Management & Documentation

Support network connectivity for co-located UK data center environments

Manage cross-connects, switching infrastructure, and carrier handoffs

Ensure resilient and redundant network designs aligned to production requirements

Fortinet Firewalls (FortiGate)

FortiADC (load balancing and application delivery)

Dell networking (Layer 2 / Layer 3 switching platforms)

Routing (OSPF)

VLAN design and network segmentation

Layer 2 / Layer 3 switching

What You Bring to the Role:

Education:

Bachelor’s degree in Computer Science, Computer Information Systems, or related field.

Relevant certifications such as CCNP, CCIE, CISSP, or equivalent are preferred.

Experience:

7+ years of enterprise network engineering experience in data center-centric environments

Strong hands-on experience with:

Deep experience with:

Experience supporting high-availability network architectures

Experience supporting ISO 27001 and Cyber Essentials Plus compliance environments

Experience working in 24x7 production environments with on-call responsibilities

Skills:

Core Networking

Advanced TCP/IP networking fundamentals

Routing, switching, VLANs, and segmentation

Dell switch configuration and troubleshooting

Load Balancing & Application Delivery

F ortiADC configuration and support

Traffic distribution, persistence, health checks, and high availability

Firewall & Security

FortiGate configuration, NAT, policy management, logging, and high availability

Network segmentation and access control

Connectivity

Secure remote access via VPN for administrative and operational use

Work Environment:

This position offers remote-first flexibility, with hybrid or on-site options available. Occasional travel to offices or vendor sites may be required based on project needs.

Why You’ll Love It Here:

Strategic Impact: Lead mission-critical IT projects with direct visibility to senior leadership.

Ownership & Autonomy: You’ll own the project plan — and the outcome.

Collaborative Team: Work closely with experienced IT, business, and R&D professionals who value structure and results.

Flexibility & Growth: Enjoy a flexible work environment with room for continued professional development.

We are committed to building a diverse and inclusive team where everyone feels empowered to contribute and grow. If you meet most of the qualifications and are excited about the role, we encourage you to apply.

Worker Type:

Regular

Number of Openings Available:

1

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