1 to 25 of 201 Permanent Senior Systems Administrator Jobs

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 ❯

Description Clearwaters.IT is seeking an experienced Senior System Administrator to support the coordination with business and technology teams, ascertaining system requirements, such as program functions, output requirements, input data acquisition, and system techniques and controls. The environment is dynamic, and client needs are often evolving; flexibility and forward-thinking views are important for success. This 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 ❯

NEW FTC ROLE – SENIOR IT SYSTEMS ADMINISTRATOR (WINDOWS) Southeast England | Hybrid (40% on-site) 6 month FTC | Salary TBC Full-Time | Interviews via Teams/On-site A leading institution in the Southeast is seeking a Senior IT Systems Administrator to join its dynamic and collaborative IT infrastructure … For: Strong experience administering Microsoft 365 , Exchange/Exchange Online , and Windows Server Solid understanding of Active Directory and Azure AD Proven ability to manage backup and disaster recovery systems Hands-on knowledge of patching processes and systems Familiarity with the ITIL framework and service desk environments Experience in the public sector or higher education is desirable, but More ❯

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 backup/disaster recovery solutions. The position …/Exchange Online –must have proven experience of migrating Exchange on–premise to Exchange online Windows Server – strong hands–on experience Active Directory/Azure AD – configuration, support 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 … team player with a customer–focused mindset Experience documenting IT systems & procedures Degree in IT (or equivalent experience) or MCSE certification Hands–on with at least 3: Exchange, ADFS, Azure AD, Citrix, Office 365, patching, email security Familiarity with ITIL or structured service environments PLEASE DO NOT APPLY IF YOU DO NOT HAVE EXPERIENCE WORKING WITHIN HIGHER EDUCATION OR More ❯

Senior Systems Administrator - Apexlogic Location: On-site requirements within Northern Virginia. Security Clearance: Active CI Poly required Employment Type: Full-time About Us: Apexlogic is a fast-growing Managed Services company dedicated to building cutting-edge, secure, and scalable IT infrastructure for the Intelligence Community (IC). We operate in high-stakes environments, supporting … team values innovation, adaptability, and a problem-solving mindset-this is not a "butts in seats" work environment or role. We are looking for a Senior Systems Administrator who thrives in a startup-like environment, takes ownership of challenges, and proactively finds solutions. The ideal candidate is not just technically proficient but highly motivated … intellectually curious, and invested in the success of our mission. Key Responsibilities: Systems Administration & Virtualization Maintain and optimize Windows Server environments, Active Directory, and Group Policy Objects (GPOs). Manage VMware infrastructure (vSphere, Horizon, VDI). Implement Multi-Factor Authentication (MFA) solutions. Network Administration & Security Compliance Administer and troubleshoot Cisco or Juniper networking equipment. Maintain and enhance firewall security More ❯

We are seeking a highly skilled and experienced Senior Systems Administrator to join our IT team. The ideal candidate will be responsible for managing, maintaining, and improving the organization's IT infrastructure, ensuring optimal performance, security, and reliability. This role involves collaborating with cross-functional teams, troubleshooting complex system issues, and implementing best practices … guidance and mentorship to junior IT staff. Provide Tier 1 (Help Desk) problem identification, diagnosis and resolution of problems Manage the daily activities of configuration and operation of IT systems Provide assistance to users in accessing and using IT systems Provide Tier 1 (Help Desk) and Tier 2 (Escalation) problem identification, diagnosis and resolution of problems (U) Provide … support to IT systems including day-to-day operations, monitoring and problem resolution for all of the client/server/storage/network devices, mobile devices, etc. Provide support for the escalation and communication of status to agency management and internal customers Optimize system operations and resource utilization, and perform system capacity analysis and planning Provide in-depth More ❯

Position Summary MAG IS OFFERING UP TO A $10k SIGN-ON BONUS FOR QUALIFIED CANDIDATES! MAG MAG Aerospace is seeing Senior System Administrator/IT Specialist will be responsible for day-to-day operational IT support along with general IT support for Project Manager Cyber and Space (PM C&S). Candidate will serve as … the System Administrator for a closed restricted network and support other DoD guest systems at various classification. Tasks include performing installation, troubleshooting and other administrative tasks associated with ongoing maintenance and enhancement of information systems and services. This is an opportunity to be involved in the newly formed PM Cyber & Space and be a part of …/IT related experience. Bachelors Degree. Four (4) years of related experience may be substituted for a bachelor's degree. Meets requirements for DoD 8140 -IT, 451-Intermediate System Administrator, which includes a Bachelors in Information Technology, Cybersecurity, Computer Science, Information Systems, Data Science, Software Engineering or Cloud+, GICSP, GSEC, Security+, SSCP or an approved DoD/ More ❯

Hosting Service - Senior System Administrator Hosting Service - Senior System Administrator 1 week ago Be among the first 25 applicants Get AI-powered advice on this job and more exclusive features. Direct message the job poster from Idox plc Home based with occasional travel to Idox offices. About the role 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 descriptions. The ideal candidate will bring deep expertise in managing complex IT environments … Industries IT Services and IT Consulting, Software Development, and IT System Data Services Referrals increase your chances of interviewing at Idox plc by 2x Get notified about new System Administrator jobs in England, United Kingdom . Oxford, England, United Kingdom 1 day ago Abingdon-On-Thames, England, United Kingdom 6 hours ago London, England, United Kingdom 2 weeks More ❯

The Senior System Administrator will support the software engineering environment (SE2) in a position that encompasses a blend of traditional system administration responsibilities along with a strong emphasis on DevSecOps practices and Agile methodologies. This is a pivotal role in ensuring the stability, security, and efficiency of our systems while actively contributing to the … There is also a requirement to be able to breakdown verbally communicated needs into actionable and documented technical requirements. It can be expected that the Senior Systems Administrator will be asked to analyze current technologies and recommend cutting edge solutions to fulfill current and future requirements. In this position the candidate will also participate … networks, and storage systems. • Understanding of Microsoft server infrastructure, virtualization, and networking principles. • Proficient in GitLab runners, including expertise in runner installation, registration, and configuring executors on various operating systems (Windows and Linux), as well as pipeline configuration. • Proven experience with Git, including using commands, branching, and merging, working with local and remote repositories, and effectively collaborating on version 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 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 ❯

Social network you want to login/join with: Hosting Service - Senior System Administrator, england col-narrow-left Client: Idox plc Location: england, United Kingdom Job Category: Other - EU work permit required: Yes col-narrow-right Job Views: 2 Posted: 10.06.2025 Expiry Date: 25.07.2025 col-wide Job Description: Hosting Senior System Administrator Public Sector Hosting Home based with occasional travel to Idox offices. About the role 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 … hosted services in order to meet SLAs. Implement redundancy, disaster recovery, and failover mechanisms to minimize downtime. Deploy and maintain monitoring solutions for both private and public cloud-hosted systems to identify and resolve issues proactively. Analyse performance metrics and implement optimizations to ensure alignment with SLA requirements. Manage and maintain Citrix NetScaler for load balancing, secure access, and More ❯

Overview Systems Planning and Analysis, Inc. (SPA) delivers high-impact, technical solutions to complex national security issues. With over 50 years of business expertise and consistent growth, we are known for continuous innovation for our government customers, in both the US and abroad. Our exceptionally talented team is highly collaborative in spirit and practice, producing Results that Matter . … work with the best! We offer opportunity, unique challenges, and clear-sighted commitment to the mission. SPA: Objective. Responsive. Trusted. We seek an experienced Senior System Administrator with deep expertise in private cloud infrastructure, VMware, and Azure Cloud services. This role will focus on designing, deploying, and managing hybrid cloud environments, ensuring the stability, security … Desired Qualifications: Familiarity with regulatory frameworks such as NIST SP 800-53, CMMC, and FedRAMP. Familiarity with multi-cloud environments, including AWS or Google Cloud. Microsoft Certified: Azure Administrator Associate Security Clearance Requirement Ability to obtain and maintain a Secret or higher security clearance (if required by the project). More ❯

Hosting Senior System Administrator Public Sector Hosting Home based with occasional travel to Idox offices. About the role 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 … hosted services in order to meet SLAs. Implement redundancy, disaster recovery, and failover mechanisms to minimize downtime. Deploy and maintain monitoring solutions for both private and public cloud-hosted systems to identify and resolve issues proactively. Analyse performance metrics and implement optimizations to ensure alignment with SLA requirements. Presentation Tier Administration: Manage and maintain Citrix NetScaler for load balancing … Virtual Apps, Remote Desktop Services and Azure Virtual Desktop to deliver hosted applications and ensure a seamless end-user experience. Windows Server Administration: Deploy, configure, and manage Windows Server systems in private and public cloud-hosted setups. Configure and troubleshoot Group Policy Objects (GPOs) to enforce security and operational policies. Perform advanced troubleshooting to quickly resolve issues affecting hosted More ❯

Job Description BAE Systems, a top ten prime contractor to the U.S. Department of Defense, enables the U.S. government to transform data into intelligence and provides engineering, integration and sustainment support for critical military platforms and systems. Intelligence & Security provides services and products to the Department of Defense, the government, federal law enforcement officials, and troops deployed around the … world. At BAE Systems, we promote a strong, collaborative culture and provide our employees with the tools, skills and training they need to succeed. We are all about trust, camaraderie and a shared ambition to lead the world in defense technologies and national security services. We offer flexible work environment to support the balance in your life and keep … at your best. Be a part of a company that is part of the community; driven to improve our future and protect our freedom. We are looking for experienced Systems Administrator to join our technology-based program supporting a key government customer. This program will deliver engineering services for network infrastructure as well as sophisticated enterprise computing More ❯

NGDS is seeking a highly skilled and motivated Systems Engineer to serve as a Systems Sustainment Administrator within a dynamic and fast-paced 24/7 operational team. This critical role supports the sustained operation and maintenance of a newly deployed naval enterprise transport network, ensuring 24/7/365 availability and reliability. As a … Systems Sustainment Administrator, you will play a key role in troubleshooting and resolving Tier 1-2 operational issues, leveraging a suite of tools and processes to monitor the performance and availability of managed services and systems across multiple exchange points, mentoring less experienced engineers, and interacting with Tier 3 sustainment engineers. This position is integral to … Chef, Terraform, Containerization, Jenkins, or similar - Experience deploying VMs within VMWare vSphere Experience with the following a plus: - Nautobot - RHEL Satelite - InfoBlox DDI Other requirements: - Adapt rapidly to new systems and technologies - Resolve complex issues efficiently and effectively - Communicate technical details in a clear, concise, and professional manner to diverse stakeholders - Must have a "teacher" mentality to support development More ❯

The selected candidate will be responsible for the ongoing operations, maintenance and continuous improvement of multiple classified IT program environments. This IT professional will ensure that the Space IT systems are managed, controlled and compliant with the Security Technical Implementation Guide (STIG) and the Risk Management Framework (RMF). If you are looking for a hands-on role with … DoD 8570.01-M IAT Level II or III certification (i.e. Security+, CASP, CISSP), within 6 months of starting the position • Experience with Linux/UNIX Server and Desktop Operating Systems (i.e. RH 7.x, RH 8.x, etc.) • Experience with Operating Systems life cycle management and configuration management (i.e., Installation/Upgrades, System Imaging, Account Management, Print Services, Domain Services … renewals) • Ability to lift 30 lbs. Desired Skills: • Active Security Clearance • Bachelors of Science degree from accredited University • Experience with Windows Server user account management, administration and access controls • Systems Administration experience supporting United States Government classified environments • Experience in applying DISA STIGs and resolving security vulnerabilities • Experience with PowerShell scripting • Fundamental understanding of the OSI model • Fundamental understanding 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 ❯

threats around the world. Your greatest work is ahead! The Multi-domain Solutions Division (MDS) within the Leidos National Security Sector is seeking a skilled Senior Systems Administrator to join a new cyber security program and play a key role in supporting government-critical systems. You will be part of a program that oversees … What you'll be doing: Manage, optimize, and secure our IT infrastructure, ensuring the reliability, scalability, and security of our systems. Oversee the installation, configuration, and maintenance of critical systems and applications, while proactively identifying and resolving technical issues. Manage both on-premises and cloud environments, automating routine tasks, and implementing best practices to enhance system performance. Collaborate with … functional teams to ensure seamless IT operations and provide guidance to junior administrators to promote a culture of operational excellence. Responsible for installation, configuration, administration, support and maintenance of systems, including associated hardware. Management of systems infrastructures, implementing best practices to Identify and recommend system functional specifications, configuration of physical and virtual systems, backup and recovery of More ❯

seeking a Senior Systems Administrator - Tier-2 Level to support upcoming work located in San Antonio, TX. Position: Senior System Administrator, Tier-3 Level Support Services Location: San Antonio, TX (On-Site) Clearance: U.S. Citizen with ability to obtain a Public Trust Summary: This contract will provide 24/… to include resetting and configuring devices. Identify and troubleshoot Enterprise Management (EM) issues related to patches and servers. Troubleshoot and resolve Data-at-Rest (DAR) issues. Provide Site Administrator support and Enterprise monitoring for Group Policy Objects (GPO), initial troubleshooting of GPOs, adding Security Groups to group policies. Perform system administration tasks on Enterprise server and end-user … Associate Microsoft Certified: Windows Server Hybrid Administrator Associate Cisco Certified Network Associate (CCNA) Microsoft System Center Operations Manager (SCOM) Training Cybersecurity and Infrastructure Security Agency, Certified Information Systems Security Professional (CISSP) GIAC Certified Enterprise Defender (GCED), and/or GIAC Certified Incident Handler Certification (GCIH) Certified Information Systems Security Professional (CISSP) STIG 101 Training ITIL More ❯

Proficiency in working with OpenStack components and services • Proficiency in working with AWS Cloud components and services • Experience with RKE2, Rancher, Longhorn, and Docker containers • Proficiency in various operating systems, such as Linux/Unix, Windows Server • Understanding of networking protocols and services (TCP/IP, DNS, DHCP, VPN, etc.) • Configuration and management of routers, switches, firewalls, and other … network devices • Experience with firewalls, intrusion detection/prevention systems, and vulnerability management • Proficiency in scripting languages like Bash, PowerShell, or Python to automate repetitive tasks • Understanding of server hardware, storage systems, and backup solutions • Troubleshooting hardware issues and coordinating with vendors for support • Experience with operational ground systems • Be a team player and work in a … encourage you to search on Lockheed Martin Jobs , and apply for roles that align with your qualifications. Experience Level: Experienced Professional Business Unit: SPACE Relocation Available: Possible Career Area: Systems Engineering: Other Type: Part-Time Shift: First 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 ❯