Senior IT Infrastructure Administrator, Networking

Senior IT Infrastructure Administrator, Networking

Full-Time 60000 - 80000 £ / year (est.) Home office (partial)
Confluence Technologies

At a Glance

  • Tasks: Own the full network lifecycle, from design to operations, using modern Cisco technologies.
  • Company: Join Confluence, a global leader in investment data innovation.
  • Benefits: Generous time off, global career development, and social events.
  • Other info: Flexible working options and exposure to diverse cultures.
  • Why this job: Make a real impact on enterprise-scale projects with long-term growth potential.
  • Qualifications: 8+ years in IT infrastructure, strong Cisco experience, and troubleshooting skills.

The predicted salary is between 60000 - 80000 £ per year.

Location: London, United Kingdom

More about the role & team

This is a senior, hands‑on networking opportunity where you'll own enterprise infrastructure end‑to‑end - from initial design through implementation and into steady‑state operations. Working closely with infrastructure and business stakeholders, you'll deliver complex network solutions while ensuring they are scalable, secure, and fully embedded into ongoing support. This role exists to strengthen internal expertise and reduce reliance on external vendors, placing you at the center of critical infrastructure transformation initiatives.

  • Own the full network lifecycle - from design through to operations, not just delivery
  • Step into a true SME role with visibility and influence across infrastructure decisions
  • Work hands‑on with modern Cisco technologies, including SD‑WAN transformation
  • Drive real impact by building internal capability and reducing vendor reliance
  • Gain exposure to enterprise‑scale, multi‑site environments and cross‑functional initiatives

Based in a major tech hub (e.g., Toronto, US, or Ireland), this is an attractive opportunity for candidates looking to work on modern Cisco technologies and SD‑WAN transformation within an enterprise‑scale environment. You'll gain exposure to cross‑functional initiatives, cloud‑integrated infrastructure, and projects with real business impact—ideal for those ready to step into a visible, high‑impact engineering role with long‑term growth.

What skills and experience do I need to succeed?

  • 8+ years' experience in enterprise IT infrastructure or networking roles
  • Strong hands‑on experience with Cisco technologies (Firepower, ISE, SD‑WAN – Viptela/Catalyst)
  • Deep knowledge of network infrastructure (routing, switching, firewalls, VPNs, load balancing)
  • Expertise in routing protocols (BGP, OSPF, EIGRP) across multi‑site environments
  • Proven experience designing, implementing, and transitioning solutions into production
  • Strong troubleshooting skills, including root cause analysis and incident resolution
  • Experience maintaining infrastructure health (patching, upgrades, configurations)
  • Experience in SaaS or cloud‑based environments
  • Exposure to virtualized infrastructure (e.g., VMware)
  • Familiarity with enterprise storage platforms (e.g., NetApp)
  • Experience with scripting or automation (PowerShell, Python, Terraform, Ansible)
  • Cisco certifications (CCNP or CCIE)

What do we offer?

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

More about the Location

We offer flexible working options for all employees.

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.

Senior IT Infrastructure Administrator, Networking employer: Confluence Technologies

At Confluence, we pride ourselves on fostering a culture of innovation and collaboration, making us an exceptional employer for those in the Senior IT Infrastructure Administrator role. Our London location offers a vibrant tech hub environment, with generous time off packages, global career development opportunities, and a commitment to employee growth through exposure to cutting-edge technologies and cross-functional initiatives. Join us to make a real impact while enjoying a flexible working atmosphere and engaging social events.

Confluence Technologies

Contact Details:

Confluence Technologies Recruitment Team

StudySmarter Expert Advice🤫

We think this is how you could land Senior IT Infrastructure Administrator, Networking

Tip Number 1

Network, network, network! Get out there and connect with folks in the industry. Attend meetups, webinars, or even just grab a coffee with someone who works at Confluence. You never know who might have the inside scoop on job openings!

Tip Number 2

Show off your skills! Create a portfolio or a personal project that highlights your expertise with Cisco technologies and networking solutions. This can really set you apart from other candidates when you’re chatting with potential employers.

Tip Number 3

Don’t be shy about reaching out directly to hiring managers or team leads at Confluence. A friendly message expressing your interest can go a long way. Plus, it shows initiative and enthusiasm for the role!

Tip Number 4

Apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, you’ll get updates on your application status, which is always a bonus!

We think you need these skills to ace Senior IT Infrastructure Administrator, Networking

Cisco Technologies
SD-WAN Transformation
Network Infrastructure
Routing Protocols (BGP, OSPF, EIGRP)
Troubleshooting Skills
Root Cause Analysis
Incident Resolution

Some tips for your application 🫡

Tailor Your CV:Make sure your CV is tailored to the Senior IT Infrastructure Administrator role. Highlight your hands-on experience with Cisco technologies and any relevant projects you've worked on. We want to see how your skills align with what we're looking for!

Craft a Compelling Cover Letter:Your cover letter is your chance to shine! Use it to explain why you're passionate about networking and how your experience makes you a perfect fit for our team. Don't forget to mention any specific achievements that demonstrate your expertise.

Showcase Your Problem-Solving Skills:In your application, be sure to include examples of how you've tackled complex networking challenges in the past. We love candidates who can think critically and troubleshoot effectively, so let us know how you've made an impact in previous roles!

Apply Through Our Website:We encourage you to apply directly through our website for the best chance of getting noticed. It’s super easy, and you'll be able to keep track of your application status. Plus, we love seeing applications come in through our own platform!

How to prepare for a job interview at Confluence Technologies

Know Your Cisco Stuff

Make sure you brush up on your knowledge of Cisco technologies, especially Firepower, ISE, and SD-WAN. Be ready to discuss how you've used these in past roles, as well as any specific projects where you implemented these technologies.

Showcase Your Problem-Solving Skills

Prepare to share examples of complex network issues you've resolved. Highlight your troubleshooting skills and your approach to root cause analysis. This will demonstrate your hands-on experience and ability to maintain infrastructure health.

Understand the Full Network Lifecycle

Be ready to talk about your experience with the entire network lifecycle—from design to operations. Discuss how you've transitioned solutions into production and what strategies you've used to ensure scalability and security.

Get Familiar with Multi-Site Environments

Since this role involves enterprise-scale, multi-site environments, be prepared to discuss your experience in these settings. Talk about the routing protocols you've worked with, like BGP and OSPF, and how you've managed network infrastructure across different locations.