Senior Systems Administrator Job Vacancies

76 to 100 of 142 Senior Systems Administrator Jobs

Senior HPC Systems Administrator with Security Clearance

Salt Lake City, Utah, United States
FUSE Engineering
requirements o Multi-vendor servers running Red Hat of SuSe with direct attached, FC SAN storage or SSDs • Distributing computing tools such as ReS, LSF, and SLURM • HPC farm systems, HPC MPP clustered systems, Front End servers of Special Purpose devices (SPDs) • IBM of HP Blade servers with FC/SAS/Network back end • Multi-vendor filesystems … such as XFS, GPFS and Lustre • Pre-Factory testing, Factory testing, System integration and Acceptance testing during the purchase process of the HPS systems Requirements Bachelors degree in Computer science or related field and 10 years of demonstrable experience supporting the IT community Accepted professional certifications include: Valid RHCSA or higher red Hat certification Valid VMWare certification IAT Level More ❯
Employment Type: Permanent
Salary: USD Annual
Posted:

Senior Learning Management Systems Administrator

Newport, Wales, United Kingdom
Hybrid / WFH Options
JR United Kingdom
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 ❯
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Senior Salesforce System Administrator

London, England, United Kingdom
Wellcome Trust
Join to apply for the Senior Salesforce System Administrator role at Wellcome Trust Join to apply for the Senior Salesforce System Administrator role at Wellcome Trust Direct message the job poster from Wellcome Trust Contract type: Permanent The Wellcome Trust is a global charitable foundation. We improve health for everyone … health. These challenges need the bold science we support, but they won’t be solved by science alone. We are looking for a Senior Salesforce System Administrator to join our Funding Operations and Governance team in Research Funding on a permanent position. Where in Wellcome will I be working? Wellcome is seeking an experienced Senior … you will work closely with the Strategic and Technical Leads for the platform, and the Product Manager. What will I be doing? The Senior Salesforce System Administrator plays a critical and varied role in managing and optimising the Salesforce platform across Wellcome and data to meet organisational needs. As a Senior Salesforce More ❯
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Senior Learning Management Systems Administrator

Bristol, England, United Kingdom
Hybrid / WFH Options
JR United Kingdom
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 ❯
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Senior ServiceNow Developer & Certified System Administrator with Security Clearance

Annapolis Junction, Maryland, United States
Hybrid / WFH Options
GTSC Talent Solutions
AEITS, Inc. is seeking a Senior Software Developer with expertise in ServiceNow and a proven track record in enterprise software development to support our mission-focused software development team. In this position, you will support our customer in the Annapolis Junction, MD area. In this role, you will provide technical leadership, contribute to the full software development … implementations across complex systems. Mission: As a Software Developer supporting this government program, you will lead the design, development, and optimization of ServiceNow-based solutions to support enterprise-wide systems and ensure alignment with organizational and security standards. You will apply expert-level knowledge across the software development lifecycle, driving innovation while maintaining system integrity, performance, and compliance. Location … Administrator Requirements: U.S. Citizenship TS/SCI with Polygraph Bachelor's Degree and 20 years of relevant experience Research, design, develop, and/or modify enterprise-wide systems and applications Apply expert-level knowledge to all phases of the software development lifecycle (SDLC) Lead efforts in software updates, refinement, testing, debugging, and documentation Ensure code and configuration More ❯
Employment Type: Permanent
Salary: USD Annual
Posted:

Senior Linux System Administrator

Sheffield, England, United Kingdom
JR United Kingdom
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 ❯
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Sr. Systems Admin with Security Clearance

Aberdeen Proving Ground, Maryland, United States
Zachary Piper Solutions, LLC
Piper Enterprise Solutions is seeking a Sr. Systems Admin - Linux for an on-site position located in Aberdeen, MD to join an amazing team responsible for providing technical and administrative support to support the DoD and other federal government agencies across all program activities. Responsibilities for the Sr. Systems Admin: Install, configure, and support the organization's local … area network (LAN), wide area network (WAN), and Internet systems, ensuring seamless connectivity and performance. Monitor network performance to ensure availability for all system users, performing necessary maintenance to support network uptime. Test and monitor website performance to ensure correct operation and uninterrupted service. Assist in network modeling, analysis, planning, and coordination between network and data communications hardware and … software. Qualifications for the Sr. Systems Admin: 4+ years of relevant technical experience is required. Strong background in Linux system management. Must have a CompTIA Security+ certification. BA/S in Computer Science, Information Systems, Engineering, Business, or a related field is required. A combination of experience and education may be accepted in lieu of a degree. Compensation More ❯
Employment Type: Permanent
Salary: USD 120,000 Annual
Posted:

Senior Linux Systems Administrator - Cleared On-Site

Aurora, Colorado, United States
Volt
Move Forward with Volt Volt is immediately hiring for a Senior Linux Systems Administrator in Aurora, CO. You will be supporting a client's program in a classified environment as a Linux System Administrator. Responsibilities include building, maintainin More ❯
Employment Type: Permanent
Salary: USD Annual
Posted:

Hosting Service – Senior Systems Administrator

London, England, United Kingdom
Idox Plc
Hosting Service – Senior Systems Administrator, UK We are seeking a skilled Senior System Administrator to support and enhance our hosted solutions across both private and public cloud environments. This role is essential in ensuring the availability, security, performance and compliance of hosted services against our published service levels and More ❯
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Senior Linux System Administrator

United Kingdom
Hybrid / WFH Options
G.Digital
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 ❯
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Senior Linux System Administrator

Wakefield, 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 ❯
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Senior Linux System Administrator

Peterborough, 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 ❯
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Senior Linux System Administrator

Worcester, 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

Warrington, 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

London, 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 ❯
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Senior Linux System Administrator

Swindon, 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 ❯
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Senior Linux System Administrator

Newcastle upon Tyne, 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 ❯
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Senior Linux System Administrator

Hull, 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 ❯
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Senior Linux System Administrator

London Area, United Kingdom
NineTech
Manage Kubernetes clusters and containerized workloads. Administer GitLab infrastructure for CI/CD processes. Operate and maintain Kafka clusters for real-time data pipelines. Diagnose and resolve issues across systems, networks, containers, and applications. Use observability tools (Grafana, Prometheus, Kibana, Elasticsearch) to monitor system health. Automate system management tasks using Ansible. Participate in an on-call rotation to support More ❯
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Senior Linux System Administrator

City of London, London, United Kingdom
NineTech
Manage Kubernetes clusters and containerized workloads. Administer GitLab infrastructure for CI/CD processes. Operate and maintain Kafka clusters for real-time data pipelines. Diagnose and resolve issues across systems, networks, containers, and applications. Use observability tools (Grafana, Prometheus, Kibana, Elasticsearch) to monitor system health. Automate system management tasks using Ansible. Participate in an on-call rotation to support More ❯
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Senior Linux System Administrator

South East London, England, United Kingdom
NineTech
Manage Kubernetes clusters and containerized workloads. Administer GitLab infrastructure for CI/CD processes. Operate and maintain Kafka clusters for real-time data pipelines. Diagnose and resolve issues across systems, networks, containers, and applications. Use observability tools (Grafana, Prometheus, Kibana, Elasticsearch) to monitor system health. Automate system management tasks using Ansible. Participate in an on-call rotation to support More ❯
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Senior Linux System Administrator

london, south east england, united kingdom
NineTech
Manage Kubernetes clusters and containerized workloads. Administer GitLab infrastructure for CI/CD processes. Operate and maintain Kafka clusters for real-time data pipelines. Diagnose and resolve issues across systems, networks, containers, and applications. Use observability tools (Grafana, Prometheus, Kibana, Elasticsearch) to monitor system health. Automate system management tasks using Ansible. Participate in an on-call rotation to support More ❯
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Senior Linux System Administrator

slough, south east england, united kingdom
NineTech
Manage Kubernetes clusters and containerized workloads. Administer GitLab infrastructure for CI/CD processes. Operate and maintain Kafka clusters for real-time data pipelines. Diagnose and resolve issues across systems, networks, containers, and applications. Use observability tools (Grafana, Prometheus, Kibana, Elasticsearch) to monitor system health. Automate system management tasks using Ansible. Participate in an on-call rotation to support More ❯
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Senior Linux System Administrator

london (city of london), south east england, united kingdom
NineTech
Manage Kubernetes clusters and containerized workloads. Administer GitLab infrastructure for CI/CD processes. Operate and maintain Kafka clusters for real-time data pipelines. Diagnose and resolve issues across systems, networks, containers, and applications. Use observability tools (Grafana, Prometheus, Kibana, Elasticsearch) to monitor system health. Automate system management tasks using Ansible. Participate in an on-call rotation to support More ❯
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Senior System Administrator Linux (m/w/d)

Mannheim, Baden-Württemberg, Germany
Hybrid / WFH Options
osapiens Holding GmbH
We are now seeking a highly skilled Senior System Administrator - Linux to support the ongoing development and optimisation of our osapiens HUB. In this role, you will be responsible for managing and enhancing our infrastructure, automating deployment processes, and ensuring the reliability, scalability, and security of our platform. The osapiens HUB is a modern, enterprise … your colleagues in the operation of cloud infrastructures for our national and international customers Requirements A completed training as Specialist IT - System Integration, or comparable Handling many Linux (Ubuntu) systems using tools (e.g. Ansible), and managing Java applications, Apache Cassandra/ScyllaDB, Elasticsearch, and HA Proxy is not difficult for you Several years of professional experience with monitoring tools More ❯
Employment Type: Permanent
Salary: EUR Annual
Posted:
Senior Systems Administrator
10th Percentile
£32,938
25th Percentile
£45,000
Median
£65,000
75th Percentile
£73,438
90th Percentile
£75,000