Infrastructure Engineer

Franklin Fitch; Greater London; On-site; GBP 60,000 - 85,000; Full time

Job summary

Franklin Fitch is seeking an Infrastructure Engineer for a Private Investment Firm’s IT team in Greater London. This hands-on role focuses on managing critical network infrastructure, cloud connectivity, and firewall systems to support a demanding business landscape.

You will ensure high availability, performance, and security across on‑prem and Azure environments, driving improvements and automation using PowerShell and Terraform.

Qualifications

• Experience managing hybrid cloud and on‑prem infrastructure.
• Strong knowledge of Azure, Windows Server, and Microsoft 365 services.
• Proficiency with PowerShell and IaC tooling (Terraform).

Responsibilities

• Manage network and infrastructure across on‑prem and cloud.
• Support firewall and network devices (Palo Alto, Juniper).
• Automate tasks with PowerShell and Terraform.
• Maintain documentation and participate in out‑of‑hours maintenance.
• Ensure high availability, performance, and security.

Skills

Network engineering

Hybrid infrastructure

Azure cloud

Windows Server

Automation

Tools

PowerShell

Terraform

Palo Alto

Juniper/Cisco switches

Active Directory

Job description

We are working with a Private Investment Firm who are looking for an Infrastructure Engineer to join their close-knit IT Team. This is a hands‑on technical role that will see you managing critical network infrastructure, cloud connectivity, and firewall systems for a demanding business landscape.

You’ll play a key part in ensuring high availability, performance, and security across both on‑prem and cloud systems while driving improvements and automation through scripting and Infrastructure-as-Code (IaC) practices.

Key Responsibilities

• Perform routine system and network checks, proactively identifying and resolving issues.
• Support and maintain firewalls, switches, and Internet connectivity (Palo Alto / Juniper).
• Maintain and monitor hybrid cloud and on-prem infrastructure, ensuring uptime and resilience.
• Carry out patching, firmware upgrades, and infrastructure updates.
• Support Windows Server environments, Azure workloads, and Microsoft 365 services.
• Use PowerShell and Terraform to automate tasks and deployments.
• Provide escalated and VIP end‑user support when required.
• Collaborate across teams to improve network and infrastructure performance.
• Produce accurate documentation for systems, processes, and configurations.
• Participate in occasional out‑of‑hours maintenance and project work.

Core Skills & Experience

• Proven background in network and infrastructure engineering across hybrid environments.
• Strong knowledge of Azure cloud technologies and Windows Server platforms.
• Hands‑on experience with Juniper or Cisco switches and Palo Alto firewalls.
• Solid understanding of Active Directory, DNS, DHCP, GPOs, NTP, and related services.
• Proficiency in PowerShell scripting and familiarity with Terraform for IaC.
• Experience supporting Microsoft 365 and Azure AD/Entra ID including Conditional Access.
• Strong analytical, documentation, and communication skills.