Infrastructure Engineer

Radley James; Greater London; On-site; GBP 65,000 - 90,000; Full time

Job summary

Radley James in London is seeking an Infrastructure Engineer to design, maintain and enhance Windows-based infrastructure underpinning trading platforms and corporate services.

You will work with cross-functional teams to ensure highly available, low-latency solutions, implement security hardening, backup, DR and automation, and produce documentation.

Qualifications

• Experience administering Windows Server 2016/2019/2022.
• In-depth knowledge of AD, GPO, DNS, DHCP, and certificate services.
• Strong PowerShell scripting and automation skills.
• Experience with VMware vSphere or Hyper-V.
• Experience supporting Microsoft 365 and Azure hybrid environments.
• Familiarity with monitoring/logging platforms.
• Experience with backup technologies (Veeam/Commvault).
• Understanding networking (TCP/IP, routing, switching, firewalls).
• Security hardening and best practices for infrastructure.

Responsibilities

• Design, implement, and support Windows Server infrastructure.
• Administer AD, GPO, DNS, DHCP, and PKI environments.
• Manage VMware/Hyper‑V, Failover Clustering, and IIS.
• Support Microsoft 365 and Azure hybrid environments.
• Build and maintain automation with PowerShell.
• Monitor health and resolve performance or availability issues.
• Implement security hardening and patch management.
• Ensure high availability and disaster recovery readiness.
• Produce technical documentation and procedures.
• Participate in projects, upgrades, and out-of-hours maintenance.

Skills

Windows Server

Active Directory

Group Policy

DNS/DHCP

PowerShell

VMware vSphere

Hyper-V

Azure hybrid

Security hardening

Networking fundamentals

Documentation

Tools

VMware vSphere

Hyper-V

Veeam/Commvault

Azure

Job description

A world leading trading business is looking to hire an Infrastructure Engineer to be based in London.

You'll be responsible for designing, maintaining, and enhancing the Windows infrastructure that underpins the trading platforms and corporate services. Working alongside infrastructure, networking, security, and application teams, you'll play a key role in delivering highly available, low-latency, enterprise-grade solutions.

Key Responsibilities

• Design, implement, and support enterprise Windows Server infrastructure.
• Administer Active Directory, Group Policy, DNS, DHCP, and PKI environments.
• Manage Microsoft technologies including Windows Server, Hyper‑V, Failover Clustering, and IIS.
• Support Microsoft 365, Azure AD (Entra ID), and hybrid cloud environments where applicable.
• Build, maintain, and improve automation using PowerShell.
• Manage VMware infrastructure and virtual server estates.
• Maintain enterprise storage, backup, and disaster recovery solutions.
• Monitor infrastructure health and proactively resolve performance or availability issues.
• Implement security best practices, patch management, and vulnerability remediation.
• Support high‑availability systems with minimal downtime.
• Produce and maintain technical documentation and operational procedures.
• Participate in infrastructure projects, upgrades, and out-of-hours maintenance where required.

Required Skills & Experience

• Strong experience administering Windows Server (2016/2019/2022).
• Excellent knowledge of Active Directory, Group Policy, DNS, DHCP, and certificate services.
• Strong PowerShell scripting and automation skills.
• Experience with VMware vSphere or Hyper‑V.
• Experience supporting Microsoft 365 and Azure hybrid environments.
• Knowledge of enterprise monitoring and logging platforms.
• Experience with backup technologies such as Veeam or Commvault.
• Strong understanding of networking fundamentals including TCP/IP, routing, switching, and firewalls.
• Experience implementing security hardening and infrastructure best practices.
• Experience working within financial services, trading, or capital markets.
• Knowledge of low-latency infrastructure and highly available systems