Systems Administrator

Company IconXpert Recruitment Solutions Limited
Location IconStaffordshire

Systems Administrator Full-time / Permanent Staffordshire £26,230 + eligibility for annual company performance bonus Systems, Data & Innovation. Helping Business...Read More>>.

Posted: September 25th, 2026
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Junior-mid Linux Systems Administrator – Trading systems

Company IconQuant Capital
Location IconLondon

Overview In this role you support mission-critical trading infrastructure, working within a fast-paced, entrepreneurial team. You’ll collaborate with sales and engineering to ensure reliable server and network operations for the firm’s...Read More>>.

Posted: October 1st, 2026
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Junior Systems Administrator – Quant trading

Company IconQuant Capital
Location IconLondon

Overview In this junior role, you will support the staff’s technology and user experience across Windows/Linux desktops, servers, and enterprise apps. You’ll contribute to automation-driven IT operations and rapidly grow your technical...Read More>>.

Posted: October 1st, 2026
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Senior IT Systems Administrator (Linux & HPC)

Company IconKBR
Location IconSurrey

Overview In this role you will own the Linux and HPC platform stack, delivering secure, reliable enterprise and research-computing environments. You will manage Linux systems, HPC clusters, and workload scheduling while ensuring performance...Read More>>.

Posted: October 1st, 2026
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Lead IT Network Administrator, Network, Voice, AV

Company IconKBR
Location IconLeatherhead

Overview In this role you lead the administration and optimization of complex Cisco-based networking, voice, and AV services across enterprise and secure environments. You will act as a technical escalation point for operations and projects...Read More>>.

Posted: October 1st, 2026
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Systems Administration Team Lead – Quant Trading

Company IconQuant Capital
Location IconLondon

Overview In this role you lead the IT Helpdesk and Systems Administration for a renowned systematic hedge fund, supporting Europe and Asia-Pacific offices. You will oversee a high-tech Windows and Linux environment, storage and clustered co...Read More>>.

Posted: October 1st, 2026
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Linux System Administrator

Company IconSanderson Government & Defence
Location Icon

Sanderson Government & Defence provided pay rangeThis range is provided by Sanderson Government & Defence. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.Base pay range...Read More>>.

Posted: September 14th, 2026
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Linux System Administrator

Company IconDigital Prospectors
Location IconBoston

Overview Team Lead & Principal Technical Recruiter - Engineering Division Length: 3 years to start Job Description: We are seeking a talented Senior Linux Systems Administrator to support a mid-sized RedHat Lin...Read More>>.

Posted: September 14th, 2026
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Senior Linux System Administrator (DV Cleared)

Company IconRandstad Technologies Recruitment
Location Icon

Senior Linux Systems AdministratorRate: £Competitive (Inside IR35)Location: Reading area (100% on-site | Driver essential)Duration: 6-month contract (High chance of extension)Work Pattern: 9-day fortnight (Alterna...Read More>>.

Posted: September 22nd, 2026
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Systems Administrator / GitHub Enterprise

Company IconCognitive Group | Part of the Focus Cloud Group
Location Icon

Join a leading Microsoft partner – Digital, AI & Tech Transformation. Remote role but must be UK based and eligible for SC Clearance. No sponsorship can be offered. We are looking for a GitHub Enterprise Subject Matter Expert (SME)...Read More>>.

Posted: September 22nd, 2026
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Senior Network Administrator

Company IconKBR, Inc.
Location IconLeatherhead

Title: Senior Network Administrator KBR is a global provider of differentiated, professional services and technologies delivered across a wide government, defense and industrial base. Drawing from its rich 100-year history...Read More>>.

Posted: September 22nd, 2026
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D365 Systems Administrator: Finance & Integrations Lead

Company IconFormula 1
Location IconCity of Westminster

Formula 1 is seeking a D365 Systems Administrator to join our IT department. You will maintain and optimise the D365 Finance & Operations environment and integrated systems in line with F1 business goals. You will configure and support D365, build...Read More>>.

Posted: September 22nd, 2026
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Systems & Application Administrator

Company IconJ.W. Pepper & Son, Inc.
Location IconExton

Position Summary The Systems & Applications Administrator is responsible for the administration, maintenance, support, and continuous improvement of the organization's server infrastructure, enterprise technology platforms, and busines...Read More>>.

Posted: September 22nd, 2026
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Finance Systems Administrator (Yooz & SAP) - 12 month fixed term contract

Company IconOctopus Energy Group
Location IconLondon

At Octopus Energy Generation (OEGEN), we're passionate about powering a sustainable future. As pioneers in the renewable energy space, we don’t just invest in utility-scale projects; we invest in people, communities, and a greener tomorrow....Read More>>.

Posted: September 22nd, 2026
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Senior Systems Administrator

Company IconVerve
Location IconSlough

Who We Are Verve is a global ad-tech company that owns and operates a fully integrated advertising stack, spanning demand, supply, and data. While most companies in our space specialize in one layer of the ecosystem, we own the DS...Read More>>.

Posted: September 22nd, 2026
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Systems & Applications Administrator: Infra, Apps & Security

Company IconJ.W. Pepper & Son, Inc.
Location IconExton

The Systems & Applications Administrator at J.W. Pepper & Son, Inc. is responsible for the administration, maintenance, support, and continuous improvement of the organization’s server infrastructure, enterprise platforms, and business applicati...Read More>>.

Posted: September 22nd, 2026
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System Administrator

Company IconPrism Digital
Location IconWindsor

Get AI-powered advice on this job and more exclusive features.This range is provided by Prism Digital. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.Base pay rangeDire...Read More>>.

Posted: September 22nd, 2026
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System Administrator - 1 year FTC (London or Amsterdam)

Company IconJAC Recruitment (UK) Ltd.
Location IconLondon

Company: Global Retail Company Position: Infrastructure Specialist Contract: 1-year fixed term contract Location: London (Hybrid) Salary: 60,000 – 70,000 GBP + 10% Bonus...Read More>>.

Posted: September 22nd, 2026
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Systems Administrator (Associate)

Company IconPowerToFly
Location IconBasingstoke

About Us Visa is a world leader in payments technology, facilitating transactions between consumers, merchants, financial institutions and government entities across more than 200 countries and territories, dedicated to uplifting every...Read More>>.

Posted: September 22nd, 2026
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Senior IT Systems Administrator (Linux & HPC)

Company IconKBR, Inc.
Location IconLeatherhead

Title: Senior IT Systems Administrator (Linux & HPC) KBR is a global provider of differentiated, professional services and technologies delivered across a wide government, defense and industrial base. Drawing from its rich 100-y...Read More>>.

Posted: September 22nd, 2026
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Senior Research Systems Administrator — HPC & AI Infra

Company IconUniversity of Oxford
Location IconOxford

The University of Oxford is establishing OxRC, a new university-wide research computing service. As a Senior Research Systems Administrator, you will design, deploy and operate Linux-based infrastructure, spanning HPC/HTC platforms and GPU-enabled...Read More>>.

Posted: September 23rd, 2026
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Lead IT Network Administrator, Network, Voice, AV

Company IconKBR, Inc.
Location IconLeatherhead

Title:Lead IT Network Administrator, Network, Voice, AVKBR is seeking a Lead IT Network Administrator (Network, Voice & AV) to join our team supporting complex, mission critical IT infrastructure across enterprise and secur...Read More>>.

Posted: September 24th, 2026
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Senior Linux & HPC Systems Administrator (Hybrid)

Company IconKBR, Inc.
Location IconLeatherhead

KBR, Inc. is seeking a Senior IT Systems Administrator (Linux & HPC) to own the Linux enterprise and HPC platforms. The role focuses on Linux engineering, HPC compute, SLURM workload management, and cluster provisioning with NVIDIA Base Command Ma...Read More>>.

Posted: September 24th, 2026
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Automation & Systems Administrator (OneWorld, Qlik, iSeries)

Company IconHenry Schein
Location Icon

Henry Schein seeks a System Administrator to co-manage operations across OneWorld XE and higher, Qlik Sense and iSeries automated tasks. The role covers user access, security groups, data dictionary items and environment maintenance, with responsi...Read More>>.

Posted: September 25th, 2026
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Senior Research Systems Administrator

Company IconCorehr
Location IconOxford

UK date and time: 24-September-2026 12:45Digital and Information Services, Central OxfordWould you like to use your systems expertise to help shape a new University-wide research computing service from its foundations?...Read More>>.

Posted: September 25th, 2026
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System Administrator 1 - Technical Operations Center (Sunday shift)

Company IconM.C. Dean, Inc.
Location IconLondon

About M.C. Dean M.C. Dean is Building Intelligence®. We design, build, operate, and maintain cyber-physical solutions for the nation’s most mission-critical facilities, secure environments, complex infrastructure, and global enterpr...Read More>>.

Posted: September 26th, 2026
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Dev Ops Systems Administrator

Company IconProactive Appointments
Location IconPirbright

Senior DevOps Systems Administrator Location: Woking, Surrey - Hybrid (1 day per month in the office) Are you an experienced DevOps Systems Administrator or Senior DevOps Engineer ready to take ownership of complex...Read More>>.

Posted: September 27th, 2026
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Infor Systems Administrator

Company IconNigel Wright Group
Location IconNorth East

Our client is an international manufacturing organisation operating across multiple countries and production sites. The business is undertaking a major digital transformation programme, replacing a fragmented legacy systems landscape with a sin...Read More>>.

Posted: September 27th, 2026
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Global Infor ERP Systems Administrator – Transformation

Company IconNigel Wright Group
Location IconNorth East

Nigel Wright Group is seeking a Global Infor Systems Administrator to own the operational management, administration and continuous improvement of the organisation’s global Infor environment.Joining during the latter stages of implementat...Read More>>.

Posted: September 27th, 2026
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Systems Administrator - Platform Migration & Merge Specialist

Company Iconhawkeyeinnovations
Location IconBasingstoke

Systems Administrator - Platform Migration & Merge SpecialistLocation: Basingstoke (hybrid)Job Type: Fixed Term Contract (Until 31st March 2027)Salary: £50k - 80k (Pro Rated for period of hire Aug26-...Read More>>.

Posted: September 27th, 2026
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Senior Windows Systems Administrator — AD, Exchange & GPO Pro

Company IconGlobal Relay
Location IconLondon

Global Relay is seeking a Senior Windows Administrator to lead design, deployment, and support of Windows environments, focusing on Exchange, Active Directory, and desktop management. The role collaborates with Operations, Security, and IT teams t...Read More>>.

Posted: September 27th, 2026
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ServiceNow System Administrator - Platform & Integrations Expert

Company IconSmartRecruiters, Inc.
Location Icon

Wavenet is seeking a proactive ServiceNow System Administrator to manage and enhance our ServiceNow platform. You’ll ensure stability, usability, and ongoing improvements across ITSM, CSM, and related modules, collaborating with the Platform Own...Read More>>.

Posted: September 30th, 2026
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ServiceNow System Administrator

Company IconSmartRecruiters, Inc.
Location Icon

Wavenet is a managed services provider offering cybersecurity, communications, and connectivity that grows with our customers’ businesses – no matter what the future holds. Since 2000, we’ve been keeping businesses connected. A...Read More>>.

Posted: September 30th, 2026
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SaaS CRM & Revenue Systems Administrator (Remote)

Company IconYO AI Labs
Location IconAncoats

YO AI Labs is seeking a Salesforce/HubSpot Administrator - Revenue Systems (SaaS) to support a remote UK client project. You will audit and optimise CRM and revenue platforms, resolve data and process inconsistencies, and document complex SaaS wor...Read More>>.

Posted: October 2nd, 2026
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Remote CRM & Revenue Systems Administrator (SaaS)

Company IconYO AI Labs
Location IconOxford

YO AI Labs is seeking an experienced Salesforce / HubSpot Administrator – Revenue Systems (SaaS) to support a customer project focused on operational excellence across CRM and revenue systems. This remote contractor role emphasizes evaluating Sa...Read More>>.

Posted: October 2nd, 2026
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Revenue Systems CRM Administrator — Remote

Company IconYO AI Labs
Location IconFen Ditton

YO AI Labs in the United Kingdom (remote) is seeking an experienced Salesforce/HubSpot Administrator for Revenue Systems in a SaaS project. You will audit and optimize CRM and revenue workflows, resolve data inconsistencies, and document actionabl...Read More>>.

Posted: October 2nd, 2026
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Remote Salesforce & Revenue Systems Administrator

Company IconYO AI Labs
Location IconLondon

YO AI Labs is seeking an experienced Salesforce and HubSpot Administrator to support revenue systems for a SaaS customer project. You will audit CRMs, resolve data and process inconsistencies, and document operational approaches to complex workflo...Read More>>.

Posted: October 2nd, 2026
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Systems & Datacenter Administrator (Ops) — London

Company IconsmartTrade Group
Location IconLondon

smartTrade Technologies is a software publisher specializing in the trading and finance sector. Its clients primarily include investment banks, stock exchanges, brokers, and pension funds. smartTrade enables real-time computerized management of fi...Read More>>.

Posted: October 8th, 2026
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Network Operations Administrator

Company IconCadent Gas
Location IconWolverhampton

12 Month Fixed Term Contract Opportunity Location: Hybrid between Planetary Road Wolverhampton (WV13 3XA) & Home - typically 3 days per week in office Help keep our operations running smoothly At Cade...Read More>>.

Posted: September 24th, 2026
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IT Systems & Azure Administrator | Flexible, SC-Cleared

Company IconCatorfaen
Location IconWales

Ascent Flight Training (Management) Ltd is seeking an ICT Administrator to join a dedicated team. You will provide technical support for the ATOMS Training Management System and Ascents Unified Communications, while aiding SaaS environments and th...Read More>>.

Posted: October 2nd, 2026
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HR Systems & Recruitment Administrator - Part Time

Company IconConfidential
Location IconBirmingham

We have a fantastic opportunity for an experienced HR professional looking to take on an exciting new role within a well-respected organisation based in Birmingham. The ideal candidate will be passionate, motivated and have previous experie...Read More>>.

Posted: October 3rd, 2026
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