Last updated: 2025-11-09
57 It Systems Administration jobs in London.
Jane Street
London
- Skills: IT Operations, Windows, Linux, PowerShell, networking, system administration, troubleshooting, technical documentation, hardware, customer support
- Level: intern
- Type: internship
DRW
DRW is a diversified trading firm with over 3 decades of experience bringing sophisticated technology and exceptional people together to operate in markets aro…
London
- Skills: Linux, Ansible, Scripting, Automation, Troubleshooting, High Availability, IP Networking, Prometheus, Configuration Management, Documentation
- Level: mid
- Type: full_time
Mandarin Oriental
Mandarin Oriental Hotel Group is a leader in the luxury hotel industry, renowned for its exceptional service and architectural design.
London
- Skills: Microsoft Cloud, Active Directory, Entra ID, Azure AD, Cloud Networking, SCCM, Virtualization, High Availability, Disaster Recovery, Cost Optimization
- Level: senior
- Type: full_time
Rothesay
Rothesay is the UK’s largest pensions insurance specialist, purpose-built to protect pension schemes and their members’ pensions. With over £70 billion of asse…
London
- Skills: Infrastructure Service Design, Microsoft Azure IaaS, Windows365, Entra ID, Azure Active Directory, Microsoft Intune, Microsoft Office 365, network infrastructure, cybersecurity controls, process automation
- Level: mid
- Type: full_time
Fortinet
Fortinet empowers its customers with intelligent, seamless protection across the expanding attack surface and the power to take on ever-increasing performance …
London
- Skills: encryption, authentication, network security, intrusion detection, anti-virus, routing, switching, LAN, WAN, CISSP
- Level: mid
- Type: full_time
Fujitsu
Fujitsu is a leading Japanese information and communication technology (ICT) company that provides a wide range of technology products, solutions, and services.
Bracknell
- Skills: 3rd Line support, VMWare, Windows Server, Active Directory, Group Policy, PowerShell, Veeam, Microsoft Exchange, ITIL, Troubleshooting
- Level: mid
- Type: full_time
Geneva Trading
Founded in 1999, Geneva Trading is a premier global principal trading firm with strategically located offices in Chicago, Dublin, and London. Our relentless fo…
London
- Skills: desktop support, troubleshooting, financial services, scripting, Python, PowerShell, networking, monitoring tools, ticketing systems, data accuracy
- Level: mid
- Type: full_time
Canonical
Canonical is the company behind Ubuntu, the world's best-known open-source operating system. We provide security and compliance, cloud-native solutions, and en…
London
- Skills: Linux, Cryptography, Security, Compliance, Open-source, Cloud-native, Ubuntu, Enterprise, Kernel, Virtualization
- Level: mid
- Type: full_time
Eurofins Scientific
<p><strong>Eurofins Scientific is an international life sciences company, providing a unique range of analytical testing services to clients across multiple in…
Feltham
- Skills: VMware, Citrix, SAN Storage, Commvault, Veeam, Windows Server, Active Directory, PowerShell, Security tools, Documentation
- Level: senior
- Type: full_time
Squint/Opera
Squint/Opera is Journey’s immersive design studio, bridging the digital and physical worlds through groundbreaking storytelling and emerging technologies such …
London
- Skills: IT Support, macOS, Office 365, Windows, Active Directory, Remote Desktop, network fundamentals, documentation, troubleshooting, user guides
- Level: mid
- Type: full_time
Luminance
Luminance is the pioneer of Legal-Grade™ AI for enterprise. Backed by internationally renowned VCs and named in both the Forbes AI 50 list of ‘Most Promising P…
London
- Skills: technical support, IT systems, network issues, Active Directory, Office 365, documentation, troubleshooting, user account management, ticketing systems, scripting
- Level: entry
- Type: full_time
Academia
Academia is an innovative and rapidly expanding technology company on a mission to transform IT services for large public and private sector customers. We’re n…
London
- Skills: endpoint management, device provisioning, asset tracking, Windows deployment, Apple devices, MECM/SCCM, Active Directory, security fixes, device management, cyber security
- Level: entry
- Type: full_time
ATC
ATC is a European logistics, white glove, and technical services specialist for data centres. Our focus is on anticipating the critical needs of our clients an…
Slough
- Skills: data centres, server racks, safety, customer service, logistics, installation, problem-solving, Microsoft Excel, driving licence, power tools
- Level: entry
- Type: full_time
Atos
Atos Group is a global leader in digital transformation with c. 70,000 employees and annual revenue of c. € 10 billion, operating in 67 countries. It is Europe…
London
- Skills: Cloud Security, SIEM, Microsoft Defender for Cloud, Incident Response, Azure Sentinel, KQL, Vulnerability Management, LogicMonitor, ServiceNow, Cloud Architecture
- Level: mid
- Type: full_time
Meta
Meta builds technologies that help people connect, find communities, and grow businesses. When Facebook launched in 2004, it changed the way people connect. Ap…
London
- Skills: Network Engineering, Data Center, Automation, TCP/IP, BGP, UNIX, Python, C++, Network monitoring, Network design
- Level: intern
- Type: internship
Virtu Financial
Virtu is a leading financial firm that leverages cutting edge technology to deliver liquidity to the global markets and innovative, transparent trading solutio…
London
- Skills: Linux, Unix, Ansible, Bash, Python, Network topology, Kernel tuning, NFS, Git, BIOS configuration
- Level: senior
- Type: full_time
Evelyn Partners
Evelyn Partners is a UK leader in wealth management, providing personalised, expert investment management and financial planning advice to support clients in e…
London
- Skills: IT support, Active Directory, Microsoft Azure, incident management, user account permissions, hardware configuration, procurement, customer service, time management, compliance
- Level: entry
- Type: full_time
TIAA
At TIAA, we're on a mission to build on our 100+ year legacy of delivering for our clients while evolving to meet tomorrow's challenges. We equip our associate…
London
- Skills: Infrastructure, Citrix, Cloud, Networking, Automation, AWS, Azure, Security, Virtualization, Disaster Recovery
- Level: senior
- Type: full_time
Intruder
Intruder is a multi-award winning cyber security start-up helping IT Managers and DevOps engineers protect their organisations from the cyber attacks of tomorr…
London
- Skills: vulnerability scanning, penetration testing, offensive security, OSCP, OSWE, network protocols, application layer vulnerabilities, Python, Ruby, cybersecurity
- Level: mid
- Type: full_time
Ekco
Ekco is one of the fastest growing cloud solution providers in Europe, specialising in enabling companies to progress along the path of cloud maturity and mana…
London
- Skills: monitoring, patching, observability, automation, cloud platforms, vulnerability management, ITSM integration, scripting, performance metrics, collaboration
- Level: mid
- Type: full_time