13 of 13 Senior Systems Administrator Jobs in the South East

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 ❯

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 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 ❯

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 ❯

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 ❯

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 ❯

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 ❯

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 ❯