51 to 75 of 136 Permanent Senior Systems Administrator Jobs

Senior Linux AWS Systems Administrator Location: Aurora, CO Required: TS/SCI w/Poly W2 hourly Contract to Hire Only Pay: $60.00 to $89.50/hr. D.O.E. Based on the benefits chosen No C2C, we can NOT work with outside agencies/vendors, and we can NOT do 1099-US TS/SCI … Geologics is seeking a Software Engineer with a TS/SCI w/Poly and a DoD 8570 IAT Level 2 Certification. Experienced with administering Red Hat Linux based systems with minimal support, to include patching, creating/maintaining RPM packages, performance tuning, networking, user management (LDAP), and security hardening. Deploying and administration of systems in Amazon Web … start date. IAT Level 2 requires one or more of the following Professional Certifications: Security+ CE, CCNA Security, GICSP, GSEC, SSCP, CySA+, CND. Experience administering Red Hat Linux based systems with minimal support, to include patching, creating/maintaining RPM packages, performance tuning, networking, user management (LDAP), and security hardening Deployment and administration of systems in Amazon Web More ❯

Social network you want to login/join with: Senior Linux System Engineer/Administrator - Trading, London Client: East End Resources Location: London, United Kingdom Job Category: Other EU work permit required: Yes Job Views: 3 Posted: 08.05.2025 Expiry Date: 22.06.2025 Job Description: Our client is a mid-size financial services firm which is a … strictly necessary. We interact directly with users and communicate frequently, so 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 workstations and servers in our expanding trading operations. This role involves working on desktops and data centers, with frequent interaction across 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 ❯

JOB TITLE: LINUX SYSTEMS ADMINISTRATOR LOCATION: AURORA, CO RATE RANGE: $88.00-93.00 PER HOUR JOB#: REQUIRED SKILLS: Typically requires a Bachelor's degree and a minimum of 5 years of prior relevant experience or a master's degree and minimum of 3 years of prior relevant experience. Active and transferable U.S. government issued TS/SCI with … start date. IAT Level 2 requires one or more of the following Professional Certifications: Security+ CE, CCNA Security, GICSP, GSEC, SSCP, CySA+, CND. Experience administering Red Hat Linux based systems with minimal support, to include patching, creating/maintaining RPM packages, performance tuning, networking, user management (LDAP), and security hardening Deployment and administration of systems in Amazon WebServices … AWS) Duration: 12 month(s) + Description/Comment: Linux System Administrator: Responsibilities include building, maintaining, and securing Information Technology systems and directly supporting customer mission-critical capabilities. You will work closely with program developers and system engineers to research issues, determine root causes and implement solutions to system problems. Must be able to support occasional after More ❯

defense industry and pioneer new technological advancements to safeguard our country. Are you ready to Innovate, Explore, and Protect? Our team is looking for a Senior Systems Administrator to join our team in Albuquerque, NM working with Space Systems Command with a background in configuring, maintaining, and troubleshooting cross-domain systems. The successful … locations and various end users. The position requires participation in an on-call rotation. Responsibilities: Perform high-level, day-to-day operational maintenance, support, and upgrades for complex operating systems, workstations and servers. Oversee the execution of security measures called out in the security plan to include timely scans of network resources and software patches. Provide effective provisioning, installation … server health, resources and log management of Linux and Windows systems. Troubleshoot and perform root cause analysis. This includes troubleshooting any and all issues with system configurations, backups, files systems, and user access. Support RHEL platforms hosting applications, operations and sustainment systems, and ACAS and other security tools. Interface with network engineers, systems engineers, and subject matter More ❯

and errors in applications Develop recommendations for enhancing software support services Ensure adherence to IT infrastructure standards, policies, and procedures Update work instruction documentation and standard operating procedures Ensure systems and applications comply with Department of Defense (DoD) directives, including DISA STIG and IAVM bulletins What's In It For You: Competitive wages Medical and dental coverage 401(k … Infrastructure Scripting to automate tasks using PowerShell and/or AWS Console Familiarity with Virtual Desktops and virtualization (VMware ESXi preferred) Experience in large-scale deployments as an administrator Knowledge of cloud migration and AWS Cloud Platform (IaaS preferred) Load balancing/failover technologies General knowledge of antivirus, vulnerability scanning software, and Security Information and Event Management (SIEM More ❯

NewGen is seeking a Senior Systems Administrator with an active Top Secret to provide O&M support - installation, configuration, securing and hardening, testing, sustainment, upgrading, remediation, and decommissioning- to the activity's IT cross domain solution (CDS) which allows access to Multiple Independent Levels of Security (MILS) and Operational Domains from a single workstation. … This complex client-server solution requires the Senior Systems Administrator II to be knowledgeable and capable of administering a combination of Microsoft Windows and Linux based platforms. Additional duties and responsibilities include working alongside IT O&M Server team members to provide O&M support to existing server-based solutions which across a variety … of major technology vendors including, but not limited to, Citrix, Esri, McAfee, Microsoft, Red Hat, and SolarWinds. The Senior Systems Administrator II shall support the mid-level internal escalation tier(s) for the Server O&M team providing troubleshooting support and guidance to assess and remediate challenges primarily in the CDS domain. Experience Required More ❯

tech + data + people that truly sets us apart in the market, alongside our 'global approach, local touch' mentality. Job Summary The Corporate IT Matter Subject Expert for Systems forms a part of the team of engineers that are focus on Systems related technologies , within the wider Corporate Systems team. The role involves driving the implementation … operation and improvement of the systems tech stack and practices, including compute, storage, identity and security, focusing on our corporate systems reliability, scalability, and efficiency. Collaborates closely with the rest of the Technology, Corporate and Platform teams to align on and drive the Corporate IT compute system. The ultimate goal is to build and run a reliable, scalable … secure set of compute capabilities in HBX Group while fostering a culture of collaboration, innovation, and continuous improvement within the team. Job Responsibilities Form part of the Corporate IT Systems team, providing support in day-to-day activities delivering high-quality results and meeting the service targets. Collaborate with the Corporate Systems Lead and other technology platforms teams More ❯

an accredited college or university ; in lieu of BS four (04) years of additional applicable experience will be considered. Must have at least fifteen (15) years of experience performing systems administration and/or supporting programs, and contracts of similar scope, type, and complexity within intelligence community spaces. Experience providing training for customers, partners, and/or peers on More ❯

and willing to take on any challenge. Enjoy working with customers of all shapes and sizes. You will have a passion for educating, training, designing, and building cloud computing systems for a diverse and challenging set of customers. Have a strong understanding of large scale cloud computing solutions. The ideal candidate will have past experience working as a security … systems engineer or security architect. You will enjoy keeping your existing technical skills and developing new ones, so that you can make strong contributions to deep architecture discussions around securing systems and applications in the cloud. You regularly take part in deep-dive education and design exercises along with technical deep dive drive technical discussions to create world … presentation skills – Presentations, white boarding, large and small group speaking. Technical – broad and deep knowledge of fundamental security principles and technologies, Security services development/deployment experience, and IT systems and network engineering experience. Operational Security – should have experience in operationalizing both infrastructure and application security controls Economic and business – RFP/Acquisition support; market analysis; cost benefit analysis 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 ❯

Top Secret/SCI w. Full Scope Polygraph to be considered for this position. Apply in 60 seconds at Summary: SYSTOLIC is seeking an Senior System Administrator with experience managing Linux systems. Qualifications & Compensation: Candidates with 15+ years of experience and a technical degree from an accredited university will receive approximately $263,000/year. … Job Description: Provides support for implementation, troubleshooting and maintenance of Information Technology (IT) systems. Manages IT system infrastructure and any processes related to these systems. Provides 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. Provides Tier 1 (Help Desk … to agency management and internal customers. Provides support for the dispatch system and hardware problems and remains involved in the resolution process. Configures and manages UNIX and Windows operating systems and installs/loads operating system software, troubleshoots, maintains integrity and configures network components along with implementing operating systems enhancements to improve reliability and performance. Desired Skills: Installing More ❯

and technologies. The Senior Linux System Administrator will perform standard Linux System Administration duties as required to maintain smooth operation of multi-user computer systems consisting of Linux based application and license servers, virtual machines, and GP/GPU cluster based systems. Coordination with network administrators required. RESPONSIBILITIES WILL INCLUDE: • Setting up administrator … Developing and monitoring policies and standards for allocation related to the use of computing resources. • Participating in the installation, integration, acceptance testing, and on-going maintenance of our HPC systems and software environment. • Assisting with forecast resource limitations and provide recommendations for increasing the efficiency of our resources through proper scheduling and load balancing techniques. REQUIREMENTS: • Bachelors and five … years or more experience; Masters and three (3) years or more experience; PhD and 0 years related experience • Extensive knowledge of Linux and Unix operating systems concepts as well as systems administration experience • Ability to develop and maintain documentation on system administration procedures for routine and complex tasks • Ability to create and maintain Information Assurance (IA) compliance documentation More ❯

Overview The Senior ERP & CRM Systems Administrator will play a critical role within the IT team, responsible for the ongoing administration, maintenance, support, and enhancement of the company's core business applications - including Oracle E-Business Suite, Salesforce, and collaboration platforms such as Atlassian JIRA and Confluence. This position requires a hands-on, proactive … complex technical issues and will be expected to perform system setup, configuration, performance tuning, and operational optimization. In addition to core r esponsibilities, the Senior Administrator will contribute to broader IT operations and demonstrate flexibility in taking on evolving roles within a small, agile team. This position is based in Herndon, VA with the opportunity … company goals. Knowledge or Proficiency Areas preferred. Strong computer and technical skills, especially with Linux, scripting. Any Oracle Application DBA Relevant Experience supporting Oracle E-Business applications and Database systems in fast paced environment is huge plus. Ability to administer, troubleshoot, backup, restore, move, upgrade, patch and tune JIRA, Confluence and Oracle Application databases is highly desirable. Salesforce administration. More ❯

Experience with Agency security requirements and implementation of STE mechanisms Requirements TS/SCI clearance with a polygraph Bachelor's degree in Technology and 15+ years of experience with systems administration, or 20+ years of experience with systems administration in lieu of a degree 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 ❯

We understand that the world we want tomorrow starts with how we do business today, and that's why we're inspired to make A Better World for Pets. Antech is comprised of a diverse team of individuals who are 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 ❯

Piper Companies is looking for a Senior Linux System Administrator to join DoD consulting company. This position is onsite in San … Diego, CA. Essential Duties of the Sr Linux System Administrator: Install, configure, and support an organization's local area network (LAN), wide area network (WAN), and Internet systems or a segment of a network system. Monitor network to ensure network availability to all system users and may perform necessary maintenance to support network availability. May assist in … network modeling, analysis, planning, and coordination between network and data communications hardware and software. May administer network security measures. Qualifications of the Sr Linux System Administrator: Bachelors degree and 4 years of experience, Associates degree and 6 years of experience, or 8 years of experience without a degree Must be able to obtain and maintain an active Secret More ❯

Piper Companies is looking for a Senior Linux System Administrator to join DoD consulting company. This position is onsite in Aberdeen Proving … Ground, MD. Essential Duties of the Sr Linux System Administrator: Install, configure, and support an organization's local area network (LAN), wide area network (WAN), and Internet systems or a segment of a network system. Monitor network to ensure network availability to all system users and may perform necessary maintenance to support network availability. May assist in … network modeling, analysis, planning, and coordination between network and data communications hardware and software. May administer network security measures. Qualifications of the Sr Linux System Administrator: Bachelors degree and 4 years of experience, Associates degree and 6 years of experience, or 8 years of experience without a degree Must be able to obtain and maintain an active Secret More ❯

Overview System Administrator, Senior Location: San Antonio, Texas, USA Job Type: Full-Time Shift: Days Telework: None Salary Range: $140,000 to $180,000 Starting salary is based on minimum education and years of experience and increases based on education and/or experience. Overview: We are seeking skilled System Administrators with a government clearance … mobile devices. Escalate and communicate status to agency management and internal customers. Optimize system operations, perform capacity analysis, and plan resource utilization. Configure and manage UNIX and Windows operating systems, including software installation and network component configuration. Provide detailed analysis and feedback for escalated tickets. Support dispatch system and hardware problem resolution. Support the design of systems, mission … interdependencies as part of the Service Oriented Architecture (SOA). Analyze and resolve complex problems associated with server hardware, applications and software integration. Qualifications Senior System Administrator: Fifteen (15) years experience as a SA in programs and contracts of similar scope, type, and complexity is required. Bachelor's degree in a technical discipline from an More ❯

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 Accepted professional certifications include: Valid RHCSA or higher red Hat certification Valid VMWare certification IAT Level II Certification Required EQUAL OPPORTUNITY EMPLOYER VETERANS DISABLED More ❯

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 ❯