Senior IT Infrastructure Administrator, Networking in London

Location: Dublin or London

Working pattern: Flexible approach required for occasional out-of-hours maintenance, project work and critical incidents. Very occasional travel, expected to be 10–25% maximum.

About the role

We’re looking for a Senior IT Infrastructure Administrator – Networking to join Confluence in a hands-on, senior networking role supporting enterprise infrastructure initiatives from design through implementation and into steady-state operations. This role is ideal for someone who enjoys combining project delivery with operational ownership — designing robust solutions, embedding them into support, and acting as a trusted technical escalation point for complex networking issues.

You’ll play a key role in our network transformation programme, supporting cloud migration initiatives and SD-WAN deployment across a global environment.

Why apply?

This is more than a traditional network support role. You’ll have end-to-end involvement across design, implementation, optimisation and troubleshooting, with the opportunity to influence technical decisions and shape the future of our infrastructure landscape. You’ll act as a Subject Matter Expert across networking technologies, helping to build internal capability, mentor colleagues and reduce reliance on third-party vendors.

What you'll be doing

• Delivering and supporting enterprise infrastructure projects from design through implementation and into operational support.
• Acting as a networking SME across troubleshooting, optimisation and knowledge sharing.
• Supporting strategic initiatives including cloud migration and SD-WAN implementation.
• Serving as a senior technical escalation point for complex networking issues.
• Driving improvements in network performance, resilience and operational efficiency.
• Maintaining infrastructure health through firmware updates, patching and configuration management.
• Supporting knowledge transfer and mentoring less experienced team members.
• Collaborating with infrastructure, security and technology teams to ensure successful project delivery.

What skills and experience do I need to succeed?

Essential requirements

• Strong hands-on experience with Cisco enterprise networking technologies, including Firepower, ISE and SD-WAN solutions (Viptela/Catalyst).
• Deep understanding of enterprise network infrastructure, including routers, switches, firewalls, VPNs and load balancers.
• Minimum of 8 years' experience within enterprise IT infrastructure or networking environments.
• Strong expertise with routing protocols including BGP, OSPF and EIGRP across multi-site environments.
• Proven ability to design, implement and transition infrastructure solutions into production.
• Hands-on experience in incident management, root cause analysis and issue resolution.
• Strong troubleshooting mindset with the ability to resolve complex networking issues independently.
• Understanding of how networking impacts wider infrastructure, security, virtualisation and database environments.
• Experience acting as a senior technical escalation point and mentoring other engineers.

Desirable requirements

• Experience within SaaS or cloud-based environments.
• Exposure to virtualisation technologies such as VMware.
• Experience with enterprise storage platforms, including NetApp.
• Scripting or automation experience using PowerShell, Python, Terraform or Ansible.
• Cisco certifications such as CCNP or CCIE.
• Experience supporting cloud migration or infrastructure modernisation programmes.
• Previous SD-WAN implementation experience.

What do we offer?

Confluence offers generous benefit packages for team members. As a growing, global organization, we are always looking for ways to ensure that our employees can access benefits that matter to them and their families. This includes:

• Generous Time Off packages including additional half days with each public holiday in your location.
• Global Career Development opportunities.
• Social Events.
• Referral Bonus scheme - Up to $3,000 per successful referral.
• Plus many more!

More about the Location

We offer flexible working options for all employees. This role can be based in either Dublin or London. The successful candidate will be comfortable supporting occasional out-of-hours maintenance, project work and critical incidents when required. Some infrastructure changes may need to be completed outside standard business hours, including occasional evenings or weekends. Travel requirements are expected to be low, with occasional travel when business needs require it.

Values

We look for people who align with our 4 values:

• Integrity - Face reality with honesty, courage and accountability.
• Imagination - Deal creatively with challenges and envision what the world could be.
• Discipline - Build good habits into reflexes which become a part of our life.
• Service - Committed to the success of others.

If you would like to find out more about a Career at Confluence, please apply today.

Pre-Employment Screening Disclaimer

As part of our recruitment process, we carry out identity checks on all candidates. Offers of employment are conditional upon the completion of satisfactory background checks prior to the commencement of work. These checks may include verification of identity, right to work in the UK, employment history, and other relevant pre-employment screening. Please note that additional checks may be required depending on the nature of the role and the jurisdiction in which the role is based or operates. These may include, but are not limited to, criminal record checks or financial background checks where applicable.

Department: IT - Information Technology

Employment Type: Permanent - Full Time

Workplace type: Hybrid