45 It Systems Administration jobs in London.

Hiring now: Data Center Ops Engr @ A Global H, Windows System Engr @ Caxton Ass, Systems Admin @ Kroo Bank, Linux Engr Mgr @ Jane Stree, Lead Systems Engr @ Taketwo In, Sr Hpc Storage Architect @ Hudson Riv, C Engr @ Senseon, Experiencedlateral Linux @ Five Rings, Systems Admin @ Kroo, Sr Network Engr @ Nielseniq.Explore more at jobswithgpt.com.

🔥 Skills

Linux (16) automation (8) Automation (8) Troubleshooting (7) network security (7) troubleshooting (6) scripting (5) Ansible (5) Scripting (5) Windows Server (4)

đź“Ť Locations

London (41) Crawley (3) Slough (1)
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A Global Hosting Company

Data Center Operations Engineer Slough
Skills & Focus: logistics, infrastructure provisioning, inventory management, troubleshooting, audits, customer service, technology services, UK driving license, ComTIA A+ certification
About the Company: Join a growing global hosting company and take your career to the next level!
Experience: 3+ years of experience in a Data Center for a managed hosting company

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

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

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…

Hudson River Trading

Senior HPC Storage Architect London
Skills & Focus: HPC, storage solutions, cross-functional teams, cloud storage, datacenters, performance, troubleshooting, financial modeling, Python, Linux
About the Company: Hudson River Trading (HRT) brings a scientific approach to trading financial products. We have built one of the world's most sophisticated computing environmen…
Experience: 10+ years of experience in HPC-like environments with multi-PB storage deployments

Senseon

C++ Engineer London
Skills & Focus: C++, systems programming, data processing pipelines, concurrent systems, security monitoring, Windows, Linux, Mac, cybersecurity, networking protocols
About the Company: We're revolutionizing cyber defense with our next-generation XDR platform. Our technology is redefining how organizations detect and respond to threats by unif…
Experience: 2+ years of professional C++ development experience
Type: Full-time
Benefits: Remote work, enhanced pension scheme, private healthcare with Vitality, bi-annual career progression review, learning a…
C++ Engineer London
Skills & Focus: C++, systems programming, data processing pipelines, concurrent systems, security monitoring, Windows, Linux, Mac, cybersecurity, networking protocols
About the Company: We're revolutionizing cyber defense with our next-generation XDR platform. Our technology is redefining how organizations detect and respond to threats by unif…
Experience: 2+ years of professional C++ development experience
Type: Full-time
Benefits: Remote work, enhanced pension scheme, private healthcare with Vitality, bi-annual career progression review, learning a…

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…

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

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…

Nielseniq

Senior Network Engineer London
Skills & Focus: network design, capacity planning, network hardware, network performance, incident management, change management, DDI, network asset management, Infrastructure as Code, network security

Bamboohr

Senior IT Infrastructure Engineer London
Skills & Focus: IT infrastructure, cloud technologies, network security, Windows and Linux systems, automation, disaster recovery, business continuity planning, PowerShell scripting, virtualization platforms, financial services
Experience: Minimum three years’ experience working in an IT support and a customer service-focused environment
Type: Full-Time

Argus Media

Senior Systems Engineer London
Skills & Focus: AWS, Linux, Windows, Juniper MIST, O365, Networking, Cloud, Infrastructure, Security, Troubleshooting
About the Company: Argus is the leading independent provider of market intelligence to the global energy and commodity markets. We offer essential price assessments, news, analyt…
Type: Full-time
Benefits: Competitive salary and company bonus scheme, Group pension scheme, Group healthcare and life assurance scheme, 25 days …

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

Ripple Labs Inc.

Physical Security Systems Specialist Support London
Skills & Focus: physical security, security systems, access control, CCTV, intrusion detection, IP networking, problem-solving, technical support, documentation, project management
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: Minimum 2 years of physical security experience, 2+ years of technical experience with security systems technology, including CCTV, access control, and intrusion detection.
Type: Full-time
Benefits: Competitive salary, bonuses, and equity; Competitive benefits that cover physical and mental healthcare, retirement, fa…

Mcdonald's

Network Engineer London
Skills & Focus: Network performance, network security, Routing and switching technologies, Meraki, Juniper, Network solutions, Networking protocols, Palo Alto firewalls, Agile environment, Cloud-based solutions
About the Company: McDonald's is part of the Global Technology Infrastructure & Operations team (GTIO) which aims to deliver modern and relevant technology that supports the way …
Experience: Extensive experience required in networking technologies and network hardware management.
Type: Full-time
Network Engineer London
Skills & Focus: Network performance, network security, Routing and switching technologies, Meraki, Juniper, Network solutions, Networking protocols, Palo Alto firewalls, Agile environment, Cloud-based solutions
About the Company: McDonald's is part of the Global Technology Infrastructure & Operations team (GTIO) which aims to deliver modern and relevant technology that supports the way …
Experience: Extensive experience required in networking technologies and network hardware management.
Type: Full-time
Network Engineer London
Skills & Focus: Network performance, network security, Routing and switching technologies, Meraki, Juniper, Network solutions, Networking protocols, Palo Alto firewalls, Agile environment, Cloud-based solutions
About the Company: McDonald's is part of the Global Technology Infrastructure & Operations team (GTIO) which aims to deliver modern and relevant technology that supports the way …
Experience: Extensive experience required in networking technologies and network hardware management.
Type: Full-time

Sigma Computing

IT System Engineer/Specialist London
Skills & Focus: Automation, Cloud IT infrastructure, IAM/PAM, Identity access management, Single sign-on, MacOS, MDM software, SaaS environments, Networking, Troubleshooting
About the Company: Sigma is the only cloud analytics and business intelligence tool empowering business teams to break free from the confines of the dashboard, explore data for t…
Experience: Strong expertise in IT, significant experience in cloud ecosystems such as AWS and GCP, strong experience in identity access management and governance
Type: Full-time
Benefits: Equity, Generous health benefits, Flexible time off policy, Paid bonding time for all new parents, Traditional and Roth…

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…

Google

Infrastructure Support Engineer, Sovereign Operations London
Skills & Focus: Technical Support, Linux, Networking, Scripting, Automation, Application Troubleshooting, Kubernetes, Google Cloud Platform, Incident Response, Service Level Agreements
About the Company: Google is a global company focused on providing internet-related services and products.
Experience: 2 years of experience in Technical Customer Support, IT Operations, or Systems Administration.

Cloudflare

Network Engineer London
Skills & Focus: Network Engineering, BGP, OSI model, Scripting, Documentation, Automation, Technical Operation, Network Monitoring, Customer Support, Team Collaboration
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: Proficient in multiple network vendor operating systems, Associate level network certification(s) (JNCIA, CCNA, etc) or higher

Vivacity

Technical Operations Assistant London
Skills & Focus: Technical Operations, deployment, monitoring, management, Internet of Things, sensors, software, Linux, data feeds, calibration
Experience: Entry level
Salary: 28,918.80

Cloudflare

Infrastructure Project Manager London
Skills & Focus: Data Center Operations, Site Reliability Engineering, Linux systems administration, Network Engineering, DevOps, Network Protocols, Configuration management, Automation solutions, Documentation, Technical leadership
About the Company: At Cloudflare, we are on a mission to help build a better Internet. We run one of the world’s largest networks that powers millions of websites and other Inter…
Experience: Minimum of 3 years of prior relevant experience in Data Center Operations, Site Reliability Engineering, Linux systems administration, Network Engineering, and/or DevOps experience
Type: Hybrid
Infrastructure Project Manager London
Skills & Focus: Data Center Operations, Site Reliability Engineering, Linux systems administration, Network Engineering, DevOps, Network Protocols, Configuration management, Automation solutions, Documentation, Technical leadership
About the Company: At Cloudflare, we are on a mission to help build a better Internet. We run one of the world’s largest networks that powers millions of websites and other Inter…
Experience: Minimum of 3 years of prior relevant experience in Data Center Operations, Site Reliability Engineering, Linux systems administration, Network Engineering, and/or DevOps experience
Type: Hybrid

Mcdonald's

Restaurant Network Engineer London
Skills & Focus: network infrastructure, routing and switching, network performance, network security, cloud, IT Service Management, network solutions, emerging technologies, Agile, troubleshooting
About the Company: McDonald’s evolving Accelerating the Arches growth strategy puts our customers and people first, and leverages our competitive advantages to strengthen our bra…
Type: Full Time

Hudson River Trading

Senior Systems Software Engineer London
Skills & Focus: Python, Unix, SaltStack, Ansible, Linux, automation, configuration management, troubleshooting, systems engineering, network configuration
About the Company: Hudson River Trading (HRT) brings a scientific approach to trading financial products. We have built one of the world's most sophisticated computing environmen…
Experience: 5+ years of relevant experience, including programming in Python

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…

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

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.

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…

Global Futures And Options Ltd (Gfo-X)

Infrastructure Engineer London
Skills & Focus: Infrastructure, Linux, Ansible, Puppet, monitoring, management, alerting, scripting, virtualization, documentation
About the Company: GFO-X is the UK's first regulated and centrally cleared trading venue dedicated to digital asset derivatives.
Experience: At least 5 years
Type: Full-Time
Benefits: Competitive benefits included

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 …

A Global Hosting Company

Data Center Operations Engineer London
Skills & Focus: logistics, infrastructure provisioning, inventory management, troubleshooting, audits, customer service, technology services, UK driving license, ComTIA A+ certification
About the Company: Join a growing global hosting company and take your career to the next level!
Experience: 3+ years of experience in a Data Center for a managed hosting company

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

Sotheby's

Global Systems Lead London
Skills & Focus: enterprise systems, cloud infrastructure, AWS, Microsoft ActiveDirectory, O365, project management, IT leadership, system administration, SaaS tools, technical documentation
About the Company: Established in 1744, Sotheby’s is the world’s premier destination for art and luxury. Sotheby’s promotes access to and ownership of exceptional art and luxury …
Experience: 3+ years experience of leading enterprise IT systems engineering in hybrid environments, 5+ years experience as an administrator of Microsoft tooling, 10+ years of professional experience supporting and delivering enterprise IT

Rentokil Initial

Global Technical Specialist - Linux Crawley
Skills & Focus: Linux solutions, Ansible Automation, Red Hat Enterprise Linux, Automation development, Performance metrics, Project planning, Scripting, Troubleshooting, Cloud, LVM
About the Company: Rentokil Initial is a global leader in providing essential services that protect people and enhance our environment. Our brands have been trusted for over 90 y…
Experience: 10+ years designing, configuring, and supporting global Red Hat Enterprise Linux (RHEL) environments
Type: Full-time
Benefits: Competitive salary and bonus scheme, Hybrid working, 23 days holiday, plus 8 bank holidays, Employee Assistance Program…
Global Technical Specialist - Linux Crawley
Skills & Focus: Linux, Ansible, RHEL, Automation, Virtualization, Troubleshooting, Scripting, Cloud, Infrastructure, Documentation
Experience: 10+ years designing, configuring, and supporting global Red Hat Enterprise Linux (RHEL) environments
Type: Full-time
Benefits: Competitive salary and bonus scheme, Hybrid working, Rentokil Initial Reward Scheme, 23 days holiday, plus 8 bank holid…
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…