Senior Infrastructure Engineer/4th Line

Code Red Associates; London; On-site; GBP 65,000; Full time

Job summary

A leading company seeks a Senior Infrastructure Engineer to manage their IT infrastructure and services. The ideal candidate will have extensive experience in Windows Active Directory and Cisco technologies. This permanent position offers a competitive salary of £65,000 and requires collaboration with multiple teams within the organization.

Qualifications

• 10+ years of experience in Windows Active Directory and server administration.
• 5+ years of Cisco routing and switching experience.
• Strong knowledge of cloud infrastructure such as Azure and AWS.

Responsibilities

• Administer day-to-day operations of IT infrastructure and services.
• Support and administer the full lifecycle of IT infrastructure operations.
• Work with various teams to ensure smooth IT operations.

Skills

Windows Active Directory administration

Cisco routing and switching

Office 365 administration

PowerShell scripting

Cloud infrastructure

Advanced troubleshooting

LAN/WAN infrastructure management

Change management processes

Project management

ITIL environments

Education

Microsoft Windows Server certifications

Job description

Social network you want to login/join with:

Senior Infrastructure Engineer/4th Line, London

Client:

Location:

London, United Kingdom

Job Category:

Other

-

EU work permit required:

Yes

Job Reference:

a984ba2f5b70

Job Views:

16

Posted:

22.06.2025

Expiry Date:

06.08.2025

Job Description:

Senior Infrastructure Engineer/4th Line £65,000 London | Permanent

My client is looking for a Senior Infrastructure Engineer to join the Infrastructure Architecture Team. You will administer the day-to-day operations of IT infrastructure and services. Work with the Architecture, Service Delivery, and Service Desk Teams, and the wider Technology Department to support and administer the full lifecycle of IT infrastructure operations, services, projects, and initiatives.

Essential Skills:

• 10+ years of Windows Active Directory and server administration
• 5+ years of Cisco routing and switching and Meraki wireless administration and operations
• Office 365 administration and PowerShell scripting and automation
• Cloud and virtual infrastructure – Azure, AWS, VMware environments
• Advanced troubleshooting, root cause analysis, and optimisation experience
• Strong knowledge of VMware 6.5 or later
• Experience managing complex LAN, WAN infrastructure, and data centre operations, with exposure to SIEM operations
• Administration of Checkpoint Gateways and Internet content filtering solutions
• Change management processes
• Project management and delivery
• Microsoft Windows Server 2012, 2016, or 2019 certifications
• Excellent demand management, planning, organisation, and prioritisation skills
• Ability to undertake out-of-hours work, during evenings and weekends
• Experience with ITIL environments and processes, preferably using ServiceNow