Infrastructure Consultant

Telefónica Tech (part of the Telefónica Group) is a leading NextGen Tech solutions provider with a highly diversified team of over 6,000 exceptionally skilled employees and +60 nationalities.

We serve more than 5.5m customers every day in over 175 countries, with a global ecosystem of market-leading partners. Global strategic hubs: Spain, Brazil, the UK, Germany.

The Telefónica Tech UK&I hub has an end- to-end portfolio of market leading services and develops integrated technology solutions to accelerate digital transformation through: Cloud, Data & AI , Business Applications , Workplace Services and Cyber Security & Networking.

Values: Open, Trusted and Bold

Main purpose of the job:  

As a L3 Infrastructure Consultant and member of the Hosting Team, you will play a key role in maintaining, evolving, and securing the customer’s infrastructure across both on-premise and cloud environments. 

This position combines technical excellence in Windows Server and VMware with hands-on experience in Azure, helping to shape, optimise, and manage our customer’s cloud presence. 

You’ll act as a subject matter expert (SME) in one or more core technology areas, supporting BAU operations, delivering infrastructure projects, and guiding the team’s ongoing technical growth, especially in Azure and automation. 

Main Duties and Responsibilities: 

Infrastructure Operations & BAU Support 

• Provide 3rd line support for Windows Server, Active Directory, Group Policy, DNS, DHCP, RDS, and related services. 

• Perform proactive maintenance, patching, capacity management, and performance tuning across on-prem and Azure workloads. 

• Troubleshoot complex incidents and provide root cause analysis through ITIL-aligned incident, problem, and change processes. 

• Maintain configuration documentation, runbooks, and knowledge base articles to support operational excellence. 

Azure Platform Management 

• Support the design, deployment, and ongoing management of Azure infrastructure services (IaaS, PaaS, networking, storage, and identity). 

• Collaborate with Hosting Leads and customers to shape Azure strategy and architecture in line with best practices. 

• Implement and maintain governance controls, cost management, tagging standards, and resource policies. 

• Develop automation using PowerShell, Azure CLI, or Infrastructure as Code (IaC) tools. 

• Support hybrid identity integrations (AD ↔ Entra ID, ADFS, Conditional Access, MFA). 

• Contribute to backup, DR, and monitoring design within Azure environments. 

Project Delivery & Service Transition 

• Deliver projects — server builds, migrations, automation, Azure deployments, and environment upgrades. 

• Collaborate with architects, service owners, and vendors to ensure projects are designed, documented, and transitioned smoothly into support. 

• Support technology refresh initiatives, maintaining N+1 standards across systems. 

Technical: 

• Microsoft Certified: Azure Administrator Associate or equivalent experience. 

• Strong experience in Microsoft Windows Server (2016–2022) environments. 

• Proficiency in Azure administration - VMs, networking, resource groups, cost management, and governance. 

• Demonstrable experience delivering and supporting projects within Managed Services. 

• Strong understanding of VMware vSphere, vCenter, and virtual machine lifecycle management. 

• Strong understanding of Active Directory, DNS, DHCP, Group Policy, and certificate services. 

• Strong understanding of PowerShell scripting for automation and troubleshooting. 

• Experience with enterprise monitoring tools such as SolarWinds Orion (administration and alert tuning). 

• Familiarity with networking fundamentals (TCP/IP, routing, VLANs, firewalls, load balancers). 

Professional: 

• Experience working within ITIL-based environments (Incident, Problem, and Change Management). 

• Excellent diagnostic, analytical, and documentation skills. 

• Strong customer-facing communication and stakeholder management skills  

We don’t believe hiring is a tick box exercise, so if you feel that you don’t match the job description 100%, but would still be a great fit for role, please get in touch.