Senior Network Engineer

FNZ (UK) Ltd; City of Edinburgh; Hybrid; GBP 70,000 - 100,000; Full time

Benefits offered by this job

Flexible working

Hybrid options

Private health insurance

Fully funded training

Job summary

FNZ (UK) Ltd is seeking a Senior Network Engineer in Edinburgh for an on-site/hybrid role, reporting into the Network Engineering leadership. You will manage FNZ’s enterprise network across on-prem, hybrid, and cloud environments, ensuring security, resilience, and high performance.

Strong hands-on expertise and collaboration with Platform Services are essential. The role emphasizes design, delivery, and continuous improvement of network services, with emphasis on automation and reducing manual

Qualifications

• Strong experience configuring, maintaining, and troubleshooting enterprise-class network environments.
• Experience with on-prem, hybrid, and public cloud networks.
• Expertise in OSPF and BGP routing protocols.
• Knowledge of Cisco Nexus switching and data-center design.
• Knowledge of network security principles and secure design.

Responsibilities

• Maintain, improve, and evolve secure, high-performing network services across FNZ’s estate.
• Serve as escalation point for complex network incidents and service issues.
• Troubleshoot and resolve network performance, availability, and connectivity problems.
• Support lifecycle management: upgrades, patching, configuration improvements, and infrastructure refreshes.
• Collaborate with Platform Services, Infrastructure, Security, and Cloud teams to deliver reliable network outcomes.

Skills

Enterprise networking

Cisco Nexus

OSPF & BGP

Network security

VXLAN/NIC aspects

F5 LTM/GTM

Terraform/Ansible/CI‑CD

Tools

Terraform

Ansible

CI/CD

Job description

Senior Network Engineer Edinburgh Hybrid Permanent £Competitive + benefits + flexible working

FNZ is on a mission to make wealth management more accessible, inclusive, and scalable worldwide. Supporting investment platforms used by over 20 million people, our EU/UK Network Engineering team underpins the critical infrastructure that powers global wealth technology. We’re looking for an experienced Senior Network Engineer to join our Platform Services function. Reporting into the Network Engineering leadership team, this role will provide deep hands-on technical expertise across FNZ’s enterprise network estate, supporting the stability, performance, security, and ongoing optimisation of our on-prem, hybrid, and cloud environments.

What you’ll be doing

As Senior Network Engineer, you’ll be a key technical contributor within the regional Network Engineering team, helping to maintain, improve, and evolve secure, resilient, and high-performing network services across FNZ.

Your responsibilities will include:

• Network Operations & Engineering: Supporting the operation, maintenance, and optimisation of FNZ’s enterprise network infrastructure
• Acting as a senior escalation point for complex network incidents and service issues
• Troubleshooting and resolving network performance, availability, and connectivity issues
• Supporting lifecycle management activity including upgrades, patching, configuration improvements, and infrastructure refreshes
• Ensuring network services remain highly available, secure, and aligned to business needs
• Design, Delivery & Improvement: Contributing to the design and delivery of network solutions for new and existing systems
• Working with Network Architecture to implement new tooling, infrastructure, and network capabilities
• Evaluating existing technologies and recommending practical improvements
• Helping to enhance automation and reduce manual, repeatable network tasks
• Supporting continuous improvement of operational procedures, standards, and documentation
• Collaboration & Stakeholder Support: Working closely with Platform Services, Infrastructure, Security, Cloud, and business teams to deliver reliable network outcomes
• Supporting project delivery alongside BAU operational responsibilities
• Providing clear technical updates, recommendations, and analysis to engineering leads and stakeholders
• Translating technical issues into clear business impact, risks, and resolution options

What we’re looking for

You’ll be a highly capable hands-on network engineer who thrives in complex, high-availability environments and understands the importance of secure, resilient infrastructure in supporting business-critical platforms.

Essential experience

• Strong experience configuring, maintaining, and troubleshooting enterprise-class network environments
• Experience supporting complex network infrastructure across on-premises, hybrid, and public cloud environments
• Strong incident response and problem-solving experience in business-critical environments
• Strong understanding of network availability, performance, resilience, and security principles
• Strong experience with Cisco Nexus switching technologies
• Advanced Layer 2 and Layer 3 network design and troubleshooting
• Proven expertise in OSPF and BGP routing protocols
• Overlay and fabric technologies such as VXLAN and NSX-T
• Network security principles and secure network design
• Traditional ADN platforms, including F5 LTM/GTM

Desirable experience

• Checkpoint and Fortigate firewall solutions
• F5 Distributed Cloud Network automation and orchestration, such as Terraform, Ansible, or CI/CD pipelines
• Cloud networking across AWS, Azure, or GCP
• LogicMonitor or similar enterprise-grade monitoring platforms

What you’ll need to succeed at FNZ

A strong technical mindset with excellent attention to detail Calm, structured problem-solving skills in complex operational environments Excellent communication skills across technical and non-technical audiences A proactive approach to continuous improvement and automation The ability to balance operational stability with change and innovation A strong sense of ownership, accountability, and delivery focus A collaborative style with the ability to work effectively across teams

Why join FNZ?

At FNZ, you’ll work at the intersection of finance, technology, and global scale, alongside highly skilled teams who are shaping the future of wealth management.

We offer

• Competitive salary and benefits
• Flexible and hybrid working options
• Global career opportunities across UK, EU, US, Canada, South Africa and APAC
• Private health and life insurance
• Fully funded training and development
• Paid parental and volunteer leave
• A collaborative, inclusive, and high-performance culture

#LI-CW1

About FNZ

FNZ is committed to opening up wealth so that everyone, everywhere can invest in their future on their terms. We know the foundation to do that already exists in the wealth management industry, but complexity holds firms back. We created wealth’s growth platform to help. We provide a global, end-to-end wealth management platform that integrates modern technology with business and investment operations. All in a regulated financial institution. We partner with the world’s leading financial institutions, with over US$2.5 trillion in assets on platform (AoP). Together with our clients, we empower nearly 30 million people across all wealth segments to invest in their future.