Senior Systems Administrator Job Vacancies

126 to 142 of 142 Senior Systems Administrator Jobs

Senior Linux System Administrator

Manchester, England, United Kingdom
Hybrid / WFH Options
JR United Kingdom
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 ❯
Posted:

Senior Linux System Administrator

Oxford, England, United Kingdom
Hybrid / WFH Options
JR United Kingdom
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 ❯
Posted:

Senior Linux System Administrator

Belfast, Northern Ireland, United Kingdom
Hybrid / WFH Options
JR United Kingdom
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 ❯
Posted:

Senior Linux System Administrator

Luton, England, United Kingdom
Hybrid / WFH Options
JR United Kingdom
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 ❯
Posted:

Senior Linux System Administrator

Preston, England, United Kingdom
Hybrid / WFH Options
JR United Kingdom
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 ❯
Posted:

Senior Linux System Administrator

Leeds, England, United Kingdom
Hybrid / WFH Options
JR United Kingdom
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 ❯
Posted:

Senior Linux System Administrator

Bolton, England, United Kingdom
Hybrid / WFH Options
JR United Kingdom
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 ❯
Posted:

Senior Linux System Administrator

Stoke-on-Trent, England, United Kingdom
Hybrid / WFH Options
JR United Kingdom
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 ❯
Posted:

Senior Linux System Administrator

Shrewsbury, England, United Kingdom
Hybrid / WFH Options
JR United Kingdom
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 … of-hours support as part of a shared rotation ( All within normal working hours Monday - Friday) Online job hunting tools 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 ❯
Posted:

Senior Linux System Administrator

Bradford, England, United Kingdom
Hybrid / WFH Options
JR United Kingdom
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. Online job hunting tools 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 … 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 ❯
Posted:

Senior Systems Administrator with Security Clearance

Quantico, Virginia, United States
ANISTAR Technologies
Job Title: Senior Systems Administrator Location: Quantico, VA Pay: $110-130k Company Summary: Our client is a proven leader in information technology, innovative strategic technical planning, and program management offering a professional level of expertise to their partners. Having been around for over twenty years our client provides the resources necessary for their … career goals in the IT industry. Position Summary: This Position requires the following specific technical and professional background: The ideal candidate will have a 5 years' experience working within Systems Administration or Helpdesk. An active DoD clearance is also required. Job Responsibilities: Works on virtualized environments, managing SANs/NAS devices, desktop services, and a variety of technologies supporting … computing capabilities Participates in complex operating systems, systems software planning and implementation, and production support activities Interfaces with Contractor and Government personnel, confers with equipment and software vendors The ideal candidate will possess the following: Active DoD Secret clearance 5 years of experience within Systems Adminisration Anistar PAYS YOU for referrals If you know any qualified job More ❯
Employment Type: Permanent
Salary: USD 130,000 Annual
Posted:

Senior Imaging Systems Administrator

London, England, United Kingdom
University College London Hospitals NHS Foundation Trust
Redefined, the UK's leading over-50s age inclusive jobs board. Job summary We are looking for a passionate individual to work as a Senior Imaging Systems Administrator within the DHCT Solutions section to help deliver this Dentistry technology change project that interfaces directly with our Imaging systems. Main duties of the job This … role will deliver direct project work to configure and enable this specific project whilst providing support/management to the overall Imaging systems that DHCT manage on behalf of the Trust. This includes identifying and planning all required configuration and implementation into the Imaging systems, liaising with both the supplier and the Dentistry department's project team, and … plans designed around patient needs. Our vision is to create a digitally enabled organisation that supports the delivery of efficient and effective patient care, achieved through easy-to-use systems that provide staff and patients with access to the right information, in the right place, at the right time. To help achieve this vision, UCLH has a major project More ❯
Posted:

Senior Linux/SysAdmin Engineer - Remote UK/Ireland

Newcastle upon Tyne, England, United Kingdom
Hybrid / WFH Options
Partnerize
to earn and maintain our clients' loyalty. Job Overview We are at a pivotal point in our tech progression. We're looking to grow the technical estate, replace existing systems with new and scale and develop the platform. It's an exciting time to join the team in this captivating period. As a Senior Linux/… for ensuring all issues/problems are addressed in a timely manner by the team. You should have a keen interest in problem-solving accompanied with experience in Linux systems, an understanding of web servers, basic database skills and have an interest in DevOps and systems administration. We're looking for a mix of technical generalists, specialists, candidates … time Job function Job function Information Technology Industries Advertising Services Referrals increase your chances of interviewing at Partnerize by 2x Get notified about new Senior System Administrator jobs in Newcastle Upon Tyne, England, United Kingdom . We’re unlocking community knowledge in a new way. Experts add insights directly into each article, started with the More ❯
Posted:

Senior HRSD System Admin

Whitby, England, United Kingdom
Hybrid / WFH Options
Cpus Engineering Staffing Solutions Inc
HR Knowledge Management Employee Service Center (Portal) Enterprise Onboarding and Transitions (Lifecycle Events) Employee Document Management Performance Analytics for HR – Participates in requirements discussions – Coordinates with HRIT System Administrator and Platform Administrator to assist with ServiceNow patches and when the patches are applied to instances – Designs, configures, and customizes new HR applications and HR Service processes … in all phases of testing and go-live activities – Maintains the configuration and updates to the HR platform once the system is live, in partnership with the Platform Administrator Qualifications Skills – 5+ years’ experience … implementing, configuring and customizing ServiceNow – 5+ years’ experience with HR Service Management and related tools – Integration exposure with HRSM/HRIS system (Workday, SAP SuccessFactors) – Knowledge of related HR systems and their functions – Experience in implementing ServiceNow processes and functions Training – Foundations eLearning – ServiceNow Fundamentals – HR Service Delivery Fundamentals – Service Portal Fundamentals (if implementing) – Performance Analytics Fundamentals (if implementing More ❯
Posted:

Sr. Systems Administrator with Security Clearance

Charlottesville, Virginia, United States
Oneida Innovations Group, LLC
In support of the U.S. Army Network Enterprise Technology Command (NETCOM) and the Regional Network Enterprise Center for the National Capital Region (RNEC-NCR), we are currently seeking a Systems Administrator. Duties and Responsibilities: Maintains and supports the integrity of the operating system environment and various computer systems. Administers, installs and troubleshoots a variety of operating systems. Performs systems More ❯
Employment Type: Permanent
Salary: USD Annual
Posted:

Senior System Administrator

Raeford, North Carolina, United States
Collabera
Title: Senior System Administrator Location: Raeford, NC Duration: 6-12 Months CTH We are seeking an experienced Senior Systems Administrator to manage and support the IT infrastructure across our manufacturing opera More ❯
Employment Type: Permanent
Salary: USD Annual
Posted:

Sr. Multi-Cloud Systems Administrator

Gaithersburg, Maryland, United States
ALTA IT Services
Sr. Multi-Cloud Systems Administrator Gaithersburg, MD (Hybrid 90% Remote) Public Trust ALTA IT Services is seeking an experienced Cloud Engineer to join our growing team. The successful candidate will be a seasoned professional with robust experience and proficiency More ❯
Employment Type: Permanent
Salary: USD Annual
Posted:
Senior Systems Administrator
10th Percentile
£32,938
25th Percentile
£45,000
Median
£65,000
75th Percentile
£73,438
90th Percentile
£75,000