1 to 25 of 69 Senior Systems Administrator Jobs in the UK excluding London

Get AI-powered advice on this job and more exclusive features. Nuclear Recruitment Specialist @ Altrad | Skilled in Recruiting, Head-Hunting, Communication & Administration Role & Location: IT Senior Systems Administrator - Altrad Cargo Fleet Offices - Middlesbrough Contract type: Permanent We are the leading provider of infrastructure services. At Altrad, we transform our nation’s critical infrastructure to … talented people, we provide the full spectrum of critical engineering and construction services for industries both onshore and offshore. Key Responsibilities: Control, maintain and administer all company systems to a high level of accuracy Ensure company procedures and policies are adhered to Report to management on performance of systems Provide third line support to all ICT teams Actively … engage with other team members in internal training, mentorship and knowledge transfer Provide support to the Systems Administration Manager Diagnose, troubleshoot and resolve service, software and hardware issues Install, configure and maintain service, software, hardware and application components Identify and implement new strategies for optimal system operations and processes Enforce security best practices to prevent cyber-attacks and security More ❯

About the role We’re on the hunt for a tech-savvy, proactive problem-solver with a passion for IT infrastructure, systems management and cybersecurity to join our dynamic team. You’ll have hands-on experience with Microsoft environments, including managing Active Directory, Exchange Server (on-premises and cloud), and Office 365. Your skills in PowerShell scripting, troubleshooting and … securing enterprise systems will make you an invaluable member of our IT team. We’re particularly keen on candidates with experience in Azure AD, Office 365 and hybrid setups. A strong understanding of cybersecurity tools and practices, Windows domain environments, networking concepts and experience in help desk ticketing and troubleshooting will help you thrive in this role. While not … grow with us as we migrate to Office 365 and strengthen our security posture. Reports to: IT Manager Key duties and responsibilities As a Senior IT Systems and Security Administrator , you’ll be at the heart of maintaining and improving our IT infrastructure, ensuring seamless operations across the organisation. From managing day-to-day More ❯

does, we’d love to hear from you. About the role We’re on the hunt for a tech-savvy, proactive problem-solver with a passion for IT infrastructure, systems management and cybersecurity to join our dynamic team. You’ll have hands-on experience with Microsoft environments, including managing Active Directory, Exchange Server (on-premises and cloud), and Office … 365. Your skills in PowerShell scripting, troubleshooting and securing enterprise systems will make you an invaluable member of our IT team. We’re particularly keen on candidates with experience in Azure AD, Office 365 and hybrid setups. A strong understanding of cybersecurity tools and practices, Windows domain environments, networking concepts and experience in help desk ticketing and troubleshooting will … grow with us as we migrate to Office 365 and strengthen our security posture. Reports to: IT Manager Key duties and responsibilities As a Senior IT Systems and Security Administrator , you’ll be at the heart of maintaining and improving our IT infrastructure, ensuring seamless operations across the organisation. From managing day-to-day More ❯

Social network you want to login/join with: Senior Information Technology System Administrator, eastbourne col-narrow-left Client: Salt Location: eastbourne, United Kingdom Job Category: Other - EU work permit required: Yes col-narrow-right Job Views: 7 Posted: 06.06.2025 … Expiry Date: 21.07.2025 col-wide Job Description: I'm working with a leading University in the South of England who are looking for a Senior IT Systems Administrator (Windows). The role is focused on managing and developing core IT services, with a strong emphasis on Windows Server Environments, Active Directory, Office 365, and … team. ? MUST HAVE EXPERIENCE: Microsoft 365 (Office 365) - admin, support, and development Exchange/Exchange Online -must have proven experience of migrating Exchange on-premise to Exchange online Backup systems and disaster recovery processes ***Experience working in or with the higher education sector*** ? ESSENTIALS: Strong communication & problem-solving skills Ability to explain technical concepts to non-technical users Collaborative More ❯

Senior Systems Administrator Prerequisites IT Systems and Infrastructure experience & knowledge (4-5+ years) A self-motivated individual with excellent problem-solving skills A trustworthy team player with good communication skills Working within a small systems team supporting the business across 2 sites supporting all departments and users, you will report to … the head of department and provide support for systems and infrastructure. You will be responsible for effective provisioning, installation/configuration, operation, and maintenance of systems hardware and software and related infrastructure. This role requires the individual to participate in technical research and development to enable continuing innovation within the infrastructure. This individual ensures that system hardware, operating … systems, software systems, and related procedures are in line with the organisations requirements and strategic direction. The scope of the role includes responsibility for internal infrastructure hardware and software as well as operational infrastructure including online systems, extending to cloud-based services where appropriate. Where required there will need to be involvement in new project work, where More ❯

Senior IT Systems Administrator Location: Near Bolton, Greater Manchester (On-site, Full-time with Flexitime) Salary: Negotiable depending on experience. Help Shape the Future of a Growing IT Function Are you a skilled infrastructure professional looking for a role where your ideas are valued and your technical input genuinely shapes the future of IT … operations? We’re working with a progressive organisation based near Bolton, Greater Manchester, to recruit a Senior IT Systems Administrator who will take a hands-on role in supporting, enhancing, and developing their IT infrastructure. You’ll be joining a close-knit, collaborative team that’s passionate about doing things properly balancing operational reliability … Creating technical documentation and playbooks What Success Looks Like - Timely delivery of infrastructure and project work - Reduction in repeat incidents through proactive solutions - Clearly visible performance improvements - Smart monitoring systems and forward-thinking change implementation The Technology You’ll Work With - Windows Server - VMware (vSphere/ESXi) - Microsoft 365 & Intune - Firewalls (e.g. Sophos, Fortinet, Cisco) - VoIP systems - Linux More ❯

the backbone of innovative IT solutions and a trusted partner in technical leadership? Our client is seeking a System Administrator III who thrives on designing cutting-edge systems, solving complex challenges, and mentoring future IT leaders. If you're passionate about aligning technology with business goals and making a tangible impact, this is your opportunity! Benefits & Extras More ❯

Join to apply for the Senior Cloud Systems Administrator role at DXC Technology 4 days ago Be among the first 25 applicants Join to apply for the Senior Cloud Systems Administrator role at DXC Technology Job Description At DXC Technology, delivering excellence for our customers and colleagues is … function Information Technology Industries IT Services and IT Consulting Referrals increase your chances of interviewing at DXC Technology by 2x Get notified about new Senior System Administrator jobs in Gloucester, England, United Kingdom . Gloucestershire, England, United Kingdom 2 weeks ago Gloucester, England, United Kingdom 5 days ago Gloucestershire, England, United Kingdom 6 days ago … Systems Administrator - Revenues, BRIDGEND COUNTY BOROUGH COUNCIL Stonehouse, England, United Kingdom 2 weeks ago Gloucester, England, United Kingdom 1 month ago Gloucester, England, United Kingdom 4 days ago Tewkesbury, England, United Kingdom 1 year ago Gloucester, England, United Kingdom 2 weeks ago Hereford, England, United Kingdom 8 hours ago Cambridge, England, United Kingdom 3 weeks ago Gloucester More ❯

collaborative environment that inspires the cross-fertilization of ideas necessary for true innovation. For more information about Draper, visit www.draper.com. Job Description Summary: The Senior Classified Systems Administrator supports the day-to-day activities of users, perform system maintenance, and upkeep of Information Technology and the design, development, documentation and deployment of IT solutions. … Duties include data administration, knowledge management, customer service, technical support, network services, system administration and systems security analysis. Installs, configures, troubleshoots, and maintains server configurations (hardware and software) to ensure their confidentiality, integrity, and availability. Also manages accounts, firewalls, and patches. Responsible for implementing access control, resetting passwords, account creation, and general administration. Job Description: Duties/Responsibilities * Install … test plans, change requests, and communication to users. * Conduct reviews and technical inspections to identify and mitigate potential security weaknesses, and ensure security compliance is implemented and all necessary systems are functional. * Provide resolutions to an assortment of customer defined problems of moderately complex scope. using knowledge and resources to diagnose and resolve basic technical issues. * Escalate issues that More ❯

Associate Director - IT Recruitment GB and Ireland at MCS Group | Your Specialist Recruitment Consultancy MCS Group is seeking to connect with a Senior IT Systems Administrator for a brand-new entrant to the local market in Northern Ireland. The Senior Systems Engineer will be the first hire on the ground … client and will work specifically on a super interesting, complex project in a company which operates in a truly unique domain. This is a perfect opportunity for a senior IT Support professional who still wants to remain hands-on, work across servers, networks, security and advanced desktop support, while at the same time getting a career-defining … year contract and is fully on-site in the Greater Belfast area. Salary will range up to £85,000, depending on experience. The Role The Senior Systems Administrator will immerse themselves in a technical role encompassing Network Engineering, Server troubleshooting, Security, Storage and highly advanced technical support. Day-to-day you will have responsibility More ❯

Job Description: Job Title: Senior Cloud Systems Administrator Location: Gloucestershire Employment Type: Permanent Salary: Competitive About DXC Technology DXC Technology is a global leader in IT services, helping organizations modernize their IT infrastructure, optimize business operations, and drive digital transformation. With a presence in over 70 countries, DXC delivers mission-critical IT services across … We work closely with our clients to maximize efficiency, improve security, and accelerate innovation through cutting-edge technology solutions. We are currently seeking a Senior Cloud Systems Administrator to join our team and play a key role in designing, managing, and maintaining enterprise cloud environments. Role Overview As a Senior Cloud … Systems Administrator, you will be responsible for the design, deployment, migration, management, and continuous improvement of cloud-based and on-premises infrastructure services. You will work with a variety of technologies, including public and private clouds, virtualization platforms, storage, networks, and security solutions. This role will require strong technical expertise, problem-solving skills, and the ability to More ❯

Senior Systems Administrator Who We Are: Veson Nautical is a well-established and rapidly growing software company working to provide end-to-end logistical, operational, and analytical solutions to propel the efficiency and effectiveness of Maritime Commerce. The Opportunity: We are seeking a skilled and motivated Senior Systems Administrator to join our growing IT team. The ideal candidate will bring extensive experience in designing, deploying, and optimizing complex IT systems and infrastructure. As a Systems Engineer, you will work on the architecture, performance, and scalability of our IT systems while collaborating with cross-functional teams to support our business goals. This is an exciting … Responsibilities: Plan, execute, and document the installation, configuration, and maintenance of server hardware, software, and operating systems. Maintain system efficiency and stability, ensuring the security and integrity of all systems and data while promptly addressing outages and technical issues. Administer application activities, including user management, optimizing remote access, and managing security for messaging systems, databases, and web applications. More ❯

Linux System Administrator Our client is a mid-size financial services firm which is a L inux shop both on the server side and the trader desktops. Client has multiple locations - the London office is smail and you will be the single Linux administrator. Some Windows administration skills are a plus but not strictly … necessary. We face our users directly and interact with them frequently. Good communication skills are important. About the Role We are seeking a hands-on professional for our growing systems administration team. Systems Administrators are responsible for the workstations and servers of our rapidly expanding trading operations. In addition to all systems work both on the desktops … and in the datacenters, Systems Administrators frequently interact with users at various levels all across our organization. Skills & Attributes: Fluency in Linux administration is a must Experience in Debian/Ubuntu preferred Strong communication skills A demonstrated ability to work tasks to completion and tolerate frequent context switches Experience scripting in bash and python is preferred, SQL and Perl More ❯

Linux System Administrator Our client is a mid-size financial services firm which is a L inux shop both on the server side and the trader desktops. Client has multiple locations - the London office is smail and you will be the single Linux administrator. Some Windows administration skills are a plus but not strictly … necessary. We face our users directly and interact with them frequently. Good communication skills are important. About the Role We are seeking a hands-on professional for our growing systems administration team. Systems Administrators are responsible for the workstations and servers of our rapidly expanding trading operations. In addition to all systems work both on the desktops … and in the datacenters, Systems Administrators frequently interact with users at various levels all across our organization. Skills & Attributes: Fluency in Linux administration is a must Experience in Debian/Ubuntu preferred Strong communication skills A demonstrated ability to work tasks to completion and tolerate frequent context switches Experience scripting in bash and python is preferred, SQL and Perl More ❯

Senior Linux System Engineer/Administrator - Trading, slough Client: East End Resources Location: slough, United Kingdom Job Category: Other Online job hunting tools - EU work permit required: Yes Job Views: 3 Posted: 04.06.2025 Expiry Date: 19.07.2025 Job Description: Our client is a mid-size financial services firm which is a L inux shop both on … necessary. We face our users directly and interact with them frequently. Good communication skills are important. About the Role We are seeking a hands-on professional for our growing systems administration team. Systems Administrators are responsible for the workstations and servers of our rapidly expanding trading operations. In addition to all systems work both on the desktops … and in the datacenters, Systems Administrators frequently interact with users at various levels all across our organization. Online job hunting tools Skills & Attributes: Fluency in Linux administration is a must Experience in Debian/Ubuntu preferred A demonstrated ability to work tasks to completion and tolerate frequent context switches Experience scripting in bash and python is preferred, SQL and More ❯

Senior System Administrator Infrastructure Join or sign in to find your next job Join to apply for the Senior System Administrator Infrastructure role at Ingenico Senior System Administrator Infrastructure 1 week ago Be among the first 25 applicants Join to apply for the Senior System Administrator Infrastructure role at Ingenico Get AI-powered advice on this job and more exclusive features. Ingenico is the global leader in payments acceptance solutions. As the trusted technology partner for merchants, banks, acquirers, ISVs, payment aggregators and fintech customers our world-class terminals, solutions and services enable the global ecosystem of payments acceptance. … time Job function Job function Information Technology Referrals increase your chances of interviewing at Ingenico by 2x Sign in to set job alerts for “Senior System Administrator” roles. NHSL 218376 Directory Services Administrator (LI) CP40 Edinburgh, Scotland, United Kingdom 1 day ago Edinburgh, Scotland, United Kingdom 1 month ago Edinburgh, Scotland, United Kingdom More ❯

This job offer is presented to you through one of our partners. Click on "Show interest" to be redirected. Job Title: Senior Linux Systems Administrator Location: Ipswich – 2 days a week in the office Employment Type: Full-Time | Permanent Salary: 50-60K + Benefits We’re hiring on behalf of a cutting-edge … tech-driven client in the connectivity sector who is seeking a seasoned Linux expert. If you're passionate about open-source systems, thrive in high-performance environments, and want to work with a company that truly values technical excellence — this is the opportunity for you. About the Role: As a Linux Systems Administrator, you will be … ll be responsible for ensuring system reliability, performance, and security across a wide array of critical services. What You’ll Be Doing: Administering, upgrading, and maintaining enterprise-level Linux systems: Ubuntu, Debian Automating routine tasks using Bash, Python, or similar scripting languages Developing & deploying solutions – Building and maintaining Linux & network infrastructure Managing configuration with tools like Ansible, Puppet, or More ❯

Senior Application Systems Administrator Join to apply for the Senior Application Systems Administrator role at Gallagher UK Overview At Pen Underwriting, we are looking for an experienced Senior Application Support Administrator to join our Technology Team. This role involves managing environments that support … deployments. Maintain security compliance and interface regularly with various stakeholders. Support audit processes and ensure timely delivery of audit evidence. Qualifications Experience as a Senior Applications Systems Administrator working with multi-tier applications. Strong knowledge of Linux OS, MySQL, and IT security. Excellent communication and problem-solving skills. Familiarity with ITIL, incident/change More ❯

Social network you want to login/join with: Senior Learning Management Systems Administrator, newport, wales col-narrow-left Client: The Workforce Development Trust Location: newport, wales, United Kingdom Job Category: Other - EU work permit required: Yes col-narrow-right Job Views: 6 Posted: 31.05.2025 Expiry Date: 15.07.2025 col-wide Job Description: Job Title … Senior Learning Management Systems Administrator Department: Learning Solutions Location: Bristol office with Hybrid working Pay Scale : £33,000k to £37,500k per annum Contract: Permanent Hours: Full Time (37.5 hours per week) 7.5 hours per day. The Workforce Development Trust The Workforce Development Trust is a not-for-profit organisation that provides services that … responsible for the advanced technical support, implementation, and optimisation of the Workforce Development Trust’s digital learning platforms and offerings. This includes acting as the technical lead for learning systems, supporting platform enhancements, and managing complex client implementations and migration projects. The post holder will supervise the LMS Administrator, act as an escalation point for the support More ❯

Other - EU work permit required: Yes col-narrow-right Job Views: 2 Posted: 23.05.2025 Expiry Date: 07.07.2025 col-wide Job Description: Job Title : Senior Learning Management Systems Administrator Department: Learning Solutions Location: Bristol office with Hybrid working Pay Scale : £33,000k to £37,500k per annum Contract: Permanent Hours: Full Time (37.5 hours per … targeted skills interventions to support a variety of frontline public services. Job summary As a key member of the Learning Solutions department, the Senior LMS Administrator is … responsible for the advanced technical support, implementation, and optimisation of the Workforce Development Trust’s digital learning platforms and offerings. This includes acting as the technical lead for learning systems, supporting platform enhancements, and managing complex client implementations and migration projects. The post holder will supervise the LMS Administrator, act as an escalation point for the support More ❯

Impact Team Location: Sheffield, South Yorkshire, United Kingdom Job Category: Other EU work permit required: Yes Job Views: 1 Posted: 25.05.2025 Expiry Date: 09.07.2025 Job Description: Linux Divestment Senior Technical Engineer PAYE Agency worker contract role Hybrid – Sheffield (Up to 3 days per week in Sheffield) We are seeking a Linux divestment engineer to engineer a standardized More ❯

exciting project. You’ll be joining a small, highly skilled team working on a large-scale, embedded server platform — built on Ubuntu, running on real hardware, and powering production systems used by thousands. This isn’t a role buried in abstraction — you’ll be close to the metal, solving real problems with real consequences. What You’ll Do Maintain … and optimise Ubuntu-based Linux systems running in a private cloud environment. Monitor, troubleshoot, and improve performance across systems and services. Manage production databases (PostgreSQL, Cassandra, Redis, Kafka) with a focus on reliability and scalability. Work on network infrastructure — including WireGuard tunnels, BGP configuration, and general network troubleshooting. Contribute to internal tooling (AMIs, automation, monitoring) and help shape … projects. Occasionally provide out-of-hours support as part of a shared rotation ( All within normal working hours Monday - Friday) What We’re Looking For Deep experience running Linux systems in production — especially Ubuntu. Confidence in managing, tuning, and troubleshooting relational and distributed databases. Strong understanding of networking concepts — experience with VPNs, routing, and security best practices. Comfortable working More ❯

exciting project. You’ll be joining a small, highly skilled team working on a large-scale, embedded server platform — built on Ubuntu, running on real hardware, and powering production systems used by thousands. This isn’t a role buried in abstraction — you’ll be close to the metal, solving real problems with real consequences. What You’ll Do Maintain … and optimise Ubuntu-based Linux systems running in a private cloud environment. Monitor, troubleshoot, and improve performance across systems and services. Manage production databases (PostgreSQL, Cassandra, Redis, Kafka) with a focus on reliability and scalability. Work on network infrastructure — including WireGuard tunnels, BGP configuration, and general network troubleshooting. Contribute to internal tooling (AMIs, automation, monitoring) and help shape … projects. Occasionally provide out-of-hours support as part of a shared rotation ( All within normal working hours Monday - Friday) What We’re Looking For Deep experience running Linux systems in production — especially Ubuntu. Confidence in managing, tuning, and troubleshooting relational and distributed databases. Strong understanding of networking concepts — experience with VPNs, routing, and security best practices. Comfortable working More ❯

exciting project. You’ll be joining a small, highly skilled team working on a large-scale, embedded server platform — built on Ubuntu, running on real hardware, and powering production systems used by thousands. This isn’t a role buried in abstraction — you’ll be close to the metal, solving real problems with real consequences. What You’ll Do Maintain … and optimise Ubuntu-based Linux systems running in a private cloud environment. Monitor, troubleshoot, and improve performance across systems and services. Manage production databases (PostgreSQL, Cassandra, Redis, Kafka) with a focus on reliability and scalability. Work on network infrastructure — including WireGuard tunnels, BGP configuration, and general network troubleshooting. Contribute to internal tooling (AMIs, automation, monitoring) and help shape … projects. Occasionally provide out-of-hours support as part of a shared rotation ( All within normal working hours Monday - Friday) What We’re Looking For Deep experience running Linux systems in production — especially Ubuntu. Confidence in managing, tuning, and troubleshooting relational and distributed databases. Strong understanding of networking concepts — experience with VPNs, routing, and security best practices. Comfortable working More ❯

exciting project. You’ll be joining a small, highly skilled team working on a large-scale, embedded server platform — built on Ubuntu, running on real hardware, and powering production systems used by thousands. This isn’t a role buried in abstraction — you’ll be close to the metal, solving real problems with real consequences. What You’ll Do Maintain … and optimise Ubuntu-based Linux systems running in a private cloud environment. Monitor, troubleshoot, and improve performance across systems and services. Manage production databases (PostgreSQL, Cassandra, Redis, Kafka) with a focus on reliability and scalability. Work on network infrastructure — including WireGuard tunnels, BGP configuration, and general network troubleshooting. Contribute to internal tooling (AMIs, automation, monitoring) and help shape … projects. Occasionally provide out-of-hours support as part of a shared rotation ( All within normal working hours Monday - Friday) What We’re Looking For Deep experience running Linux systems in production — especially Ubuntu. Confidence in managing, tuning, and troubleshooting relational and distributed databases. Strong understanding of networking concepts — experience with VPNs, routing, and security best practices. Comfortable working More ❯