Last updated: 2025-05-22

31 It Systems Administration jobs in London.

Hiring now: Sr Systems Engr @ Servicenow, Systems Admin @ Kroo Bank, Linux Engr Mgr @ Jane Stree, Sr Systems Admin @ Experian, Lead Systems Engr @ Taketwo In, Database Engr @ Cloudflare, Experiencedlateral Linux @ Five Rings, Sr Winops Engr @ Schonfeld , Network Admin Level 2 @ Lightspeed, 3Rd Line Support Engr @ Hawkeye In.Explore more at at kaamvaam.com

🔥 Skills

Linux (9) automation (8) VMware (5) Azure (5) Windows Server (5) configuration management (4) macOS (4) Google Workspace (4) cloud-based applications (4) IAM solutions (4)

📍 Locations

London (27) Crawley (2) Staines (1) Bracknell (1)
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Servicenow

Senior Systems Engineer Staines
Skills & Focus: Python, Golang, configuration management, Puppet, Ansible, cloud infrastructure, VMware, OpenStack, Linux servers, automation
About the Company: It all started in sunny San Diego, California in 2004 when a visionary engineer, Fred Luddy, saw the potential to transform how we work. Fast forward to today …

Kroo Bank

Systems Administrator London
Skills & Focus: Systems Administrator, macOS, Google Workspace, MDM solutions, security policies, technical issues, Atlassian, Jamf Pro, cloud-based applications, IAM solutions
About the Company: Kroo Bank is a digital banking platform, committed to fostering a diverse and inclusive workplace and supporting a security-focused environment for IT operatio…
Experience: Experience working in a Mac system administrator role
Type: Hybrid
Benefits: Hybrid working policy that allows for a mix of remote and office work. Commitment to diversity and inclusion, supportin…
Systems Administrator London
Skills & Focus: Systems Administrator, macOS, Google Workspace, MDM solutions, security policies, technical issues, Atlassian, Jamf Pro, cloud-based applications, IAM solutions
About the Company: Kroo Bank is a digital banking platform, committed to fostering a diverse and inclusive workplace and supporting a security-focused environment for IT operatio…
Experience: Experience working in a Mac system administrator role
Type: Hybrid
Benefits: Hybrid working policy that allows for a mix of remote and office work. Commitment to diversity and inclusion, supportin…

Jane Street

Linux Engineer Manager London
Skills & Focus: Linux, System Engineering, Leadership, Project Management, Communication Skills, Partnerships, Analytical Skills, Unix Command Line, Systems Programming, Network Protocols
About the Company: Jane Street is a quantitative trading firm and liquidity provider, focused on technology and intellectual curiosity.
Experience: Strong technical background and solid leadership experience
Type: Full-time

Experian

Senior Systems Administrator London
Skills & Focus: Systems Administrator, Technology Support, Windows, MacOS, iOS, Android, Microsoft O365, Intune, Azure, Knowledge Base

Take-Two Interactive Software, Inc.

Lead Systems Engineer London
Skills & Focus: IAM, Active Directory, Exchange, systems engineering, identity management, authentication, automation, SSO, email security, Windows Server
About the Company: Headquartered in New York City, Take-Two Interactive Software, Inc. is a leading developer, publisher, and marketer of interactive entertainment for consumers …
Experience: 3+ years of experience designing, implementing, and optimising IAM; 7+ years of experience in systems engineering, infrastructure, or a related technical domain.
Type: Hybrid
Benefits: Benefits include, but are not limited to Private healthcare, Private dental, A double matching pension policy, Employee…

Cloudflare

Database Engineer London
Skills & Focus: PostgreSQL, database tooling, automation, monitoring, performance tuning, high availability, backup, disaster recovery, scripting languages, infrastructure-as-code
About the Company: At Cloudflare, we are on a mission to help build a better Internet. Today the company runs one of the world’s largest networks that powers millions of websites…
Experience: Experience building large multi-tenant databases, operating, capacity planning, and designing for failover, fault tolerance, and disaster recovery.
Type: Full-time
Benefits: Medical/Rx Insurance, Dental Insurance, Vision Insurance, Flexible Spending Accounts, Commuter Spending Accounts, Ferti…

Five Rings Llc

Experienced/Lateral - Linux Systems Administrator London
Skills & Focus: Linux administration, Debian, Ubuntu, BIND, Ansible, Linux KVM, Zabbix, Google workplace, scripting, cybersecurity
About the Company: Five Rings is a proprietary trading firm founded with a vision of combining strategy, innovation and technology to succeed in today’s global markets. With offi…

Schonfeld Strategic Advisors

Senior WinOps Engineer London
Skills & Focus: Windows Infrastructure, Citrix VDI, SaaS platforms, Azure Cloud, PowerShell, Microsoft Office 365, Terraform, Network Security, Collaboration, Technical Documentation
About the Company: Schonfeld Strategic Advisors is a global multi-strategy, multi-manager investment platform that harnesses the transformative power of people to perform in all …

Lightspeed

Network Administrator (Level 2) London
Skills & Focus: network infrastructure, troubleshooting, WiFi technologies, Fortinet, network security, TCP/IP, DNS, DHCP, VLANs, QoS
About the Company: Powering the businesses that are the backbone of the global economy, Lightspeed's one-stop commerce platform helps merchants innovate to simplify, scale, and p…
Experience: 5 years of experience in network administration
Benefits: Ability to do your job in a truly flexible environment; Unlock your potential with our growth program; Genuine career o…

Jane Street

Windows Desktop/Server Engineer London
Skills & Focus: Windows Desktop, Windows Server, Active Directory, PowerShell, Automation, Troubleshooting, Kerberos, DNS, Group Policy, Performance Tuning
Experience: Advanced experience with Microsoft Windows 10/11 and Windows Server 2016/2019/2022; Experience with PowerShell; Strong knowledge of Active Directory, DNS, Group Policy

Hawk-Eye Innovations

3rd Line Support Engineer London
Skills & Focus: support, IT systems, networking, security, Azure, firewall, cloud, IT infrastructure, troubleshoot, virtual
Salary: £37,000 per annum
Type: Full-time
Benefits: Annual Leave: 25 days + 8 public holidays, Enhanced Pension Scheme: 5% matching, Flexible Working: Hybrid model (2 days…

Quadraturecapital

Systems Infrastructure Team Member London
Skills & Focus: Linux, C++, Python, grid computing, Infrastructure, Systems Operations, Systems Engineering, Information Security, Network Engineering, Automated Trading System

Take-Two Interactive Software, Inc.

Lead Systems Engineer London
Skills & Focus: IAM, Active Directory, Microsoft Exchange, SSO, identity management, automation, scripting, email security, permissions, documentation
About the Company: Headquartered in New York City, Take-Two Interactive Software, Inc. is a leading developer, publisher, and marketer of interactive entertainment for consumers …
Experience: 3+ years in IAM, 7+ years in systems engineering
Type: Hybrid
Benefits: Private healthcare, Private dental, double matching pension policy, Employee stock purchase scheme, Eye tests, Cycle to…

Kroo

Systems Administrator London
Skills & Focus: Mac systems administrator, macOS, Atlassian (Jira & Confluence), Google Workspace, Mobile Device Management tools, IT infrastructure, security policies and procedures, cloud-based applications, IAM solutions, financial services
About the Company: At our cutting-edge fintech company, we know that attracting and retaining the best talent means offering top-notch benefits that help our employees thrive bot…
Experience: Experience working in a Mac system administrator role
Type: Hybrid Working
Benefits: Generous holiday time, personal days, employer-sponsored volunteer program, mental health support, workplace pension, l…
Systems Administrator London
Skills & Focus: Mac systems administrator, macOS, Atlassian (Jira & Confluence), Google Workspace, Mobile Device Management tools, IT infrastructure, security policies and procedures, cloud-based applications, IAM solutions, financial services
About the Company: At our cutting-edge fintech company, we know that attracting and retaining the best talent means offering top-notch benefits that help our employees thrive bot…
Experience: Experience working in a Mac system administrator role
Type: Hybrid Working
Benefits: Generous holiday time, personal days, employer-sponsored volunteer program, mental health support, workplace pension, l…

Alphagrep Securities

Systems Engineer London
Skills & Focus: Linux Infrastructure, Distributed File System, Job Scheduling, Security solutions, Automation, Network connectivity, Git, CI/CD, MySQL, Configuration management
About the Company: AlphaGrep is a quantitative trading and investment firm founded in 2010. We are one of the largest firms by trading volume on Indian exchanges and have signifi…
Benefits: Health & Wellness Programs, stocked kitchen, gym membership, generous vacation package, relaxed environment.

Cognizant

Linux System Administrator London
Skills & Focus: Linux Administration, data centres, backup, disaster recovery, monitoring, troubleshooting, automation, networking, Python, cloud computing
About the Company: Cognizant is one of the world's leading professional services companies, transforming clients' business, operating, and technology models for the digital era. …
Type: Full-time

Ripple

Staff Network Engineer London
Skills & Focus: network engineering, AWS solutions, network virtualization, network security, VPN configurations, Palo Alto Networks, network performance monitoring, cloud networking, network monitoring systems, scripting languages
About the Company: At Ripple, we’re building a world where value moves like information does today. It’s big, it’s bold, and we’re already doing it. Through our crypto solutions …
Experience: 8-10 years of network engineering experience in corporate environments
Type: Full-time
Benefits: Competitive salary, bonuses, and equity; benefits covering physical and mental healthcare; retirement support; employee…

Rimes Technologies

Senior Infrastructure Engineer London
Skills & Focus: Infrastructure engineer, VMWare, Windows Server, Databricks, Azure, SQL Server, monitoring tools, datacenter, SaaS, capacity planning
About the Company: Rimes provides enterprise data management solutions to the global investment community, helping clients make better investment decisions using accurate informa…
Experience: Experience of supporting physical Datacenters, Hardware, O/S and networks
Type: Full-time

Dv Trading

Linux Engineer London
Skills & Focus: Linux, performance tuning, configuration management, automation, infrastructure-as-code, networking fundamentals, storage systems, system performance analysis, virtualization/VMWare, Agile and DevOps
About the Company: Founded more than 15 years ago and headquartered in Chicago, the DV Group of financial services firms has grown to more than 450 people operating throughout No…
Experience: 5+ years of experience in Linux engineering, debugging, administration, and OS system provisioning (PXE/DHCP/TFTP/Grub)
Type: Full-time
Benefits: Discretionary bonus eligibility, Medical, dental, and vision insurance, HSA, FSA, and Dependent Care options, Employer …
Linux Engineer London
Skills & Focus: Linux, performance tuning, configuration management, automation, infrastructure-as-code, networking fundamentals, storage systems, system performance analysis, virtualization/VMWare, Agile and DevOps
About the Company: Founded more than 15 years ago and headquartered in Chicago, the DV Group of financial services firms has grown to more than 450 people operating throughout No…
Experience: 5+ years of experience in Linux engineering, debugging, administration, and OS system provisioning (PXE/DHCP/TFTP/Grub)
Type: Full-time
Benefits: Discretionary bonus eligibility, Medical, dental, and vision insurance, HSA, FSA, and Dependent Care options, Employer …
Linux Engineer London
Skills & Focus: Linux, performance tuning, configuration management, automation, infrastructure-as-code, networking fundamentals, storage systems, system performance analysis, virtualization/VMWare, Agile and DevOps
About the Company: Founded more than 15 years ago and headquartered in Chicago, the DV Group of financial services firms has grown to more than 450 people operating throughout No…
Experience: 5+ years of experience in Linux engineering, debugging, administration, and OS system provisioning (PXE/DHCP/TFTP/Grub)
Type: Full-time
Benefits: Discretionary bonus eligibility, Medical, dental, and vision insurance, HSA, FSA, and Dependent Care options, Employer …

Jane Street

Linux Engineer London
Skills & Focus: Linux, Systems Engineering, Configuration Management, Automation, Production Issues, Troubleshooting, Networking, Unix Command Line, Programming Concepts, Root-Cause Analysis
About the Company: Jane Street is a quantitative trading firm and global liquidity provider, utilizing technology and quantitative methods to make its trading decisions and opera…
Experience: Experience managing/troubleshooting Linux systems in a home, work, or school environment; exposure to Linux environments through either software development, IT operations, or a similar field.
Type: Full-time

Meta

AI/HPC Systems Production Engineer London
Skills & Focus: AI, HPC, Systems Production Engineer, network infrastructure, training accelerators, performance, reliability, monitoring, troubleshooting, CI/CD
About the Company: Meta builds technologies that help people connect, find communities, and grow businesses. When Facebook launched in 2004, it changed the way people connect. Ap…
Experience: 4+ years work experience.
Type: Full Time

Luxoft

Networks Engineer London
Skills & Focus: Network Troubleshooting, Network Maintenance, Security Protocols, Firewall Rules, Security Threats, Compliance Assessments, Network Optimization, Performance Tuning, Documentation, Client Collaboration
About the Company: Luxoft is a provider of technology and business processing services to hedge funds and asset managers, offering trading and risk management platforms, along wi…

Caxton Associates

Windows System Engineer London
Skills & Focus: Windows Server, Microsoft 365, VMware, Nutanix AHV, Azure, AWS, system maintenance, Active Directory Services, scripting, technical communication
About the Company: Caxton Associates, founded in 1983, is a global trading and investment firm with offices in New York, London, Monaco, Singapore and Dubai. Caxton Associates’ p…
Experience: 5-10 years of applied experience as a Windows Systems Engineer
Windows System Engineer London
Skills & Focus: Windows Server, Microsoft 365, VMware, Nutanix AHV, Azure, AWS, system maintenance, Active Directory Services, scripting, technical communication
About the Company: Caxton Associates, founded in 1983, is a global trading and investment firm with offices in New York, London, Monaco, Singapore and Dubai. Caxton Associates’ p…
Experience: 5-10 years of applied experience as a Windows Systems Engineer

Coreweave

Data Centre Technician Crawley
Skills & Focus: Data Centre, hardware diagnostics, network diagnostics, Linux, scripting languages, Cisco IOS, Juniper JunOS, on-call rotation, troubleshooting, inventory management
About the Company: CoreWeave is the AI Hyperscaler™, delivering a cloud platform of cutting edge services powering the next wave of AI. Our technology provides enterprises and le…
Experience: At least five years Data Centre experience
Salary: £45,000 to £53,000
Type: Full-time
Benefits: Family-level Medical Insurance, Family-level Dental Insurance, Generous Pension Contribution, Life Assurance at 4x Sala…

Rentokil Initial

Linux Systems Engineer Crawley
Skills & Focus: Linux, Ansible, RHEL, VMware, Cloud, Automation, Scripting, SQL, Troubleshooting, LAMP
About the Company: At Rentokil Initial, our customers and colleagues represent diverse backgrounds and experiences. We take pride in being an equal opportunity employer, actively…
Experience: 10+ years
Type: Full-time
Benefits: Competitive salary and bonus scheme, Hybrid working, Rentokil Initial Reward Scheme, 23 days holiday plus 8 bank holida…

Perforce Software, Inc.

IT Systems Engineer Bracknell
Skills & Focus: IT operations, infrastructure, cloud, IaaS, VMware, Windows, Linux, Terraform, Puppet, Agile
About the Company: Perforce is a community of collaborative experts, problem solvers, and possibility seekers who believe work should be both challenging and fun. We inspire crea…
Experience: Minimum 3 years in IT operations, Minimum 3 years of multi-site enterprise experience and continuous availability, Minimum 3 years Operational experience
Type: Full-time