Desktop & Infrastructure Engineer

Location: London – Moorgate/Liverpool Street (office-based)
Contract: Initial 6-month fixed-term contract, with the potential to extend for a further 6 months
Start date: As soon as possible

About the Role

We're recruiting on behalf of a leading independent investment bank. Their integrated business brings together investment banking, research, institutional sales and execution services for quoted companies, growth businesses and institutional investors. They advise more UK public companies than any other independent investment bank, drawing on specialist sector knowledge, strong investor relationships and extensive public-markets expertise.

They're looking for an experienced Desktop & Infrastructure Engineer to join their London-based IT team on an initial 6-month fixed-term contract.

Reporting to the Head of Infrastructure, this is a broad, hands‑on position combining high-quality desktop support with responsibility for the stability, security and performance of the IT infrastructure. The successful candidate will act as the senior technical escalation point for colleagues providing 1st and 2nd‑line support, taking ownership of more complex issues through to resolution.

The role will support employees at all levels of the firm, so strong technical expertise, excellent communication skills and a responsive, service‑focused approach will be essential.

Key Responsibilities

• Act as the escalation point for complex 2nd and 3rd‑line desktop and infrastructure issues
• Diagnose and resolve hardware, software, operating-system, connectivity and performance problems
• Provide responsive and professional desktop support to employees and senior stakeholders
• Administer and support Microsoft 365, Windows, Active Directory and Entra ID environments
• Support endpoint configuration, software deployment, patching and device management
• Maintain and troubleshoot servers, networks, virtual environments, storage and cloud services
• Monitor infrastructure availability, capacity, performance and security
• Support backup, recovery, antivirus and business‑continuity processes
• Manage user access, permissions and security controls in line with company policies
• Support meeting‑room technology, mobile devices and remote‑access solutions
• Own incidents through to resolution and undertake root‑cause analysis for recurring issues
• Maintain accurate asset records, technical documentation and operational procedures
• Liaise with third‑party suppliers and technology partners
• Support infrastructure changes, upgrades and improvement initiatives
• Identify opportunities to improve system reliability, security and the overall user experience
• Provide wider desktop and operational IT support when required

Skills and Experience

• Strong experience as a Desktop & Infrastructure Engineer, 3rd Line Support Engineer or in a similar hands‑on position
• Broad knowledge of Microsoft desktop, server and cloud technologies
• Experience supporting Windows 10/11, Microsoft 365, Active Directory and Entra ID
• Good knowledge of networking technologies, including TCP/IP, DNS, DHCP, VPNs and Wi‑Fi
• Experience with endpoint management, software deployment and patching tools
• Knowledge of virtualisation, backup, monitoring and disaster‑recovery technologies
• Strong diagnostic and troubleshooting skills, with the ability to resolve complex issues independently
• Experience using ticketing systems and working within incident, problem and change‑management processes
• A strong understanding of information security, access management and infrastructure controls
• Excellent communication skills and confidence supporting both technical and non‑technical colleagues
• Strong organisational and prioritisation skills, particularly when managing business‑critical incidents
• A proactive, collaborative and service‑oriented approach
• Previous experience within investment banking, financial services or another regulated environment
• Experience providing high‑quality support to senior stakeholders and business‑critical users
• Experience using PowerShell or other tools to automate routine administrative tasks
• This opportunity would suit an experienced engineer who enjoys variety, takes ownership of problems and can provide dependable technical support within a fast‑paced, professional environment.