senior systems administrator

Bowhead

<div>Overview:
<div>
SENIOR LINUX SYSTEMS ADMINISTRATOR (VDEPT)</div><div></div><div><br>
Bowhead seeks a Senior Linux Systems Administrator to join our team in Dahlgren, VA. The Senior Linux Administrator is responsible for system administration and customer support of servers and workstations in a professional environment.</div>
Responsibilities:
<ul><li>Providing technical problem solving and in-depth consulting for system operations.</li><li>
Will work as part of a team responsible for administration and management of servers, end-user workstations, and potentially clustered systems operating in both unclassified and classified network environments.</li><li>
Analysis, design, and implementation of modifications to the system software in order to improve system performance, correct errors, or fulfill specific needs.</li><li>
Participate in planning new hardware acquisitions, developing operating policy, interacting with vendors, educating customers, and communicating and collaborating with other projects within the organization.</li><li>
Work closely with scientists and engineers to help them use workstations and servers to solve their computationally intensive problems.</li><li>
Support of individual user workstations and associated software will be required.</li><li>
Linux Admin will provide support for application installation, licenses management, software tracking/distribution and backup/recovery of system configurations and user data files. Assist users in applying for accounts, and approving user access.</li></ul>
Qualifications:
<ul><li>High School Diploma required or Bachelors degree preferred.</li><li>
Minimum eight to ten (8-10) or more years of demonstrated experience in system administration of Linux-based servers and Linux-based workstations.</li><li>
Must have well-developed Linux system management skills.</li><li>
Must have experience with hardware experience with HP and Dell systems.</li><li>
Must meet and maintain a DoD 8570 Information Assurance Technical (IAT) Level II certification at time of hire.</li><li>
Must have demonstrated experience working in an environment with rapidly changing job priorities.</li></ul><div>
Physical Demands:</div><ul><li>
Must be able to lift up to 10-15 pounds</li><li>
Must be able to stand and walk for prolonged amounts of time</li><li>
Must be able to twist, bend and squat periodically</li></ul><div>
SECURITY CLEARANCE REQUIREMENTS: Must be able to maintain a security clearance at the Secret level. US Citizenship is a requirement for this contract.</div></div>

Senior Linux Systems Administrator

General Dynamics Information Technology

<p></p><div><div><div><p>Your Impact</p><p>
Own your opportunity to support our nation's defense. Make an impact by connecting and securing critical operations across the globe, keeping our country safe and secure.</p><p>
Job Description</p><div><p>
Advance how our customers operate while you advance your career. Join GDIT as a Senior Linux Systems Administrator and build an impactful career in enterprise IT, collaborating with people who are driven and resourceful like you.<br>
<br>
MEANINGFUL WORK AND PERSONAL IMPACT:<br>
As a Senior Linux Systems Administrator, the work you&rsquo;ll do at GDIT will be impactful to the mission of USCENTCOM. You will play a crucial role in configuration, maintenance, and optimization of Linux-based server environments supporting a large-scale enterprise infrastructure. This role supports mission-critical systems across an environment of more than 5,000 users, 1,000 servers, and 10,000 endpoints. The administrator will collaborate closely with other Enterprise Services teams to ensure system availability, performance, security compliance, and operational efficiency in support of USCENTCOM mission requirements.</p><p>
Duties and Responsibilities</p><ul><li><p>
Configure, deploy, and maintain Linux server environments, including physical and virtual systems.</p></li><li><p>
Administer Red Hat and CentOS Linux systems, ensuring stability, performance, and security compliance.</p></li><li><p>
Configure and manage Linux services such as Apache, Nginx, DNS, DHCP, LDAP, and related system services.</p></li><li><p>
Monitor system performance and availability, proactively identifying and resolving issues before they impact operations.</p></li><li><p>
Troubleshoot and resolve complex system issues, including problems without existing documented solutions.</p></li><li><p>
Implement system patches, updates, and security hardening in accordance with DoD and organizational policies.</p></li><li><p>
Manage SSL/TLS certificate lifecycle activities supporting Linux-based services.</p></li><li><p>
Collaborate with infrastructure, network, storage, and security teams to design and implement Linux-based solutions aligned with enterprise requirements.</p></li><li><p>
Participate in system upgrades, migrations, and the deployment of new Linux infrastructure components.</p></li><li><p>
Ensure incidents, problems, and service requests are tracked, prioritized, escalated, and resolved appropriately.</p></li><li><p>
Develop and maintain technical documentation, including system configurations, troubleshooting guides, and standard operating procedures.</p></li><li><p>
Produce reports and data sets to inform leadership of system performance, trends, and improvement opportunities.</p></li><li><p>
Provide technical mentorship and guidance to junior administrators and team members.</p></li><li><p>
Support projects focused on improving the security, efficiency, scalability, and resilience of Linux environments.</p></li><li><p>
Assist in developing and enforcing system policies and best practices.</p></li><li><p>
Participate in enterprise initiatives to modernize and standardize infrastructure services.</p></li><li><p>
Contribute to continuous improvement efforts across Enterprise Services teams.</p></li></ul><p><br>
WHAT YOU&rsquo;LL NEED TO SUCCEED:
<br>
Bring your technology expertise and drive for innovation to GDIT. The Systems Administrator Senior must have:</p><ul><li><p>
Certification: Applicable DoD 8140 or DoD 8570 Certification</p></li><li><p>
Experience: 3+ years of related experience</p></li><li><p>
Required skills:</p><ul><li><p>
Demonstrated proficiency administering Red Hat and CentOS Linux systems in enterprise environments.</p></li><li><p>
Strong experience building, deploying, and maintaining Linux server infrastructures.</p></li><li><p>
Expertise in system performance tuning, availability management, and security hardening.</p></li><li><p>
Experience implementing patches, updates, and configuration changes in controlled environments.</p></li><li><p>
Ability to troubleshoot and resolve complex systems issues under operational constraints.</p></li><li><p>
Strong documentation skills for system configurations, procedures, and troubleshooting guides.</p></li><li><p>
Proven ability to work collaboratively across multiple IT disciplines.</p></li></ul></li><li><p>
Desired Skills:</p><ul><li><p>
Red Hat Certified System Administrator (RHCSA) or higher</p></li><li><p>
ITIL 4 Foundation Certification</p></li><li><p>
Experience supporting USCENTCOM environments and familiarity with mission systems and operational requirements.</p></li><li><p>
Knowledge of enterprise-scale infrastructure operations.</p></li><li><p>
Experience mentoring junior administrators and contributing to team development.</p></li></ul></li><li><p>
Security clearance level: TS/SCI clearance required</p></li><li><p>
US citizenship required</p></li></ul><p><br>
GDIT IS YOUR PLACE :
<br>
At GDIT, the mission is our purpose, and our people are at the center of everything we do.</p><ul><li><p>
Growth: AI-powered career tool that identifies career steps and learning opportunities</p></li><li><p>
Support: An internal mobility team focused on helping you achieve your career goals</p></li><li><p>
Rewards: Comprehensive benefits and wellness packages, 401K with company match, competitive pay and paid time off</p></li><li><p>
Community: Award-winning culture of innovation and a military-friendly workplace</p></li></ul><p><br>
OWN YOUR OPPORTUNITY :<br>
Explore an enterprise IT career at GDIT and you&rsquo;ll find endless opportunities to grow alongside colleagues who share your desire to drive operations forward.</p><p></p><p>
#ARMA</p><p>
#CENTCOM/CITS</p><p>
#GDITPriority</p>
</div></div><div><div><div><p>Work Requirements</p></div></div><div></div><div><div>
Years of Experience<div>
3 + years of related experience</div><ul><li>may vary based on technical training, certification(s), <i>or</i> degree</li></ul></div><div></div><div>
Certification<p>
CompTIA Security+ CE | CompTIA - CompTIA</p></div><div></div><div>
Travel Required<div>
Less than 10%</div></div><div></div><div>
Citizenship<div>
U.S. Citizenship Required</div></div></div></div></div><div><p>
Salary and Benefit Information</p><div>
The likely salary range for this position is $93,500 - $126,500. This is not, however, a guarantee of compensation or salary. Rather, salary will be set based on experience, geographic location and possibly contractual requirements and could fall outside of this range.<br>
View information about benefits and our total rewards program.</div><p>
About Our Work</p><div>
We are GDIT. A global technology and professional services company that delivers technology and mission services to every major agency across the U.S. government, defense and intelligence community. Our 30,000 experts extract the power of technology to create immediate value and deliver solutions at the edge of innovation. We operate across over 50 countries worldwide, offering leading capabilities in digital modernization, AI/ML, cloud, cyber and application development. Together with our customers, we strive to create a safer, smarter world by harnessing the power of deep expertise and advanced technology.</div><div>
Join our Talent Community to stay up to date on our career opportunities and events at gdit.com/tc.</div><div><i>
Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans</i></div></div></div>

PASONS GROUP

<p><b>Senior IT Administrator (Server Administrator)</b></p><p>Seeking experienced <b>Senior IT Administrator</b> to manage and support IT infrastructure across a <b>multi-outlet retail environment</b>. The role is responsible for ensuring <b>server administration (VMWare)</b>, <b>data security</b>, and seamless IT operations for stores, warehouses, and head office functions.</p><p><b>Key Responsibilities:</b></p><ul><li>Oversee on-premises data center infrastructure, virtualization <b>(VMWare),</b> storage (SAN/NAS/HDD offline storage), and network connectivity.</li><li>Manage data backups, disaster recovery (DR), and restore processes for retail systems, servers, VMs, and shared data.</li><li>Administer IT security systems, including antivirus monitoring, firewall management, and SIRA compliance.</li><li>Act as the primary IT contact for retail technology vendors, including POS systems, weighing scales, EAS, CCTV, network, and matrix switch systems.</li><li>Manage telecom providers (Etisalat/DU) for store connectivity, new installations, outages, and billing coordination.</li><li>Provide IT support for store openings, renovations, system upgrades, and retail technology rollouts.</li><li>Handle advanced troubleshooting and escalations impacting store operations.</li><li>Review and approve IT procurement requests related to retail operations.</li></ul><p><b>Requirements:</b></p><ul><li>Bachelor&rsquo;s degree in Information Technology, Computer Science, or related field.</li><li>5&ndash;7 years of experience in IT infrastructure or systems administration, preferably in <b>retail or multi-branch environments</b>.</li><li>Strong hands-on experience with POS systems, security platforms, networking, and vendor management.</li><li><b>Valid UAE driving license (mandatory).</b></li></ul><p>Job Type: Full-time</p>

Senior IT Administrator

COZMALABS

<p>We are seeking a highly experienced and hands-on Senior IT &amp; System Administrator to manage and maintain the organization&rsquo;s IT infrastructure, including Active Directory, Microsoft 365, operating systems, security tools, and enterprise network environments.</p><p>This role requires strong expertise in domain administration, system hardening, group policy management, security tool deployment, and corporate WiFi/network management. The ideal candidate must be capable of independently managing day-to-day IT operations while ensuring system stability, performance, and security compliance.</p><p>Key Responsibilities</p><p>Active Directory &amp; Microsoft 365 Administration</p><ul><li>Manage and maintain Active Directory (users, groups, OU structure, permissions).</li><li>Design, implement, and manage Group Policies (GPO).</li><li>Administer Microsoft 365 services (Exchange Online, Teams, SharePoint, OneDrive).</li><li>Manage hybrid identity integration and Azure AD synchronization.</li><li>Implement and maintain RBAC, MFA, and identity security controls.</li></ul><p>Systems &amp; OS Administration</p><ul><li>Install, configure, and maintain Windows Server and Windows client operating systems.</li><li>Perform OS deployment, imaging, and patch management.</li><li>Implement server and endpoint hardening best practices.</li><li>Manage file servers, print servers, and shared resources.</li><li>Monitor system performance and ensure high availability.</li></ul><p>Security Tools Deployment &amp; Management</p><ul><li>Install, configure, and manage security tools such as:</li><li>SIEM platforms</li><li>EDR/XDR solutions</li><li>DLP systems</li><li>Email security gateways</li><li>Vulnerability management tools</li><li>Monitor security alerts and coordinate remediation.</li><li>Conduct vulnerability scans and support remediation efforts.</li><li>Maintain endpoint protection and device compliance policies.</li></ul><p>Network &amp; WiFi Management</p><ul><li>Manage company LAN/WAN infrastructure.</li><li>Configure and maintain enterprise WiFi access points and controllers.</li><li>Implement network segmentation and VLAN configuration.</li><li>Manage firewalls, VPN access, and network security policies.</li><li>Troubleshoot connectivity and performance issues.</li></ul><p>IT Operations &amp; Support</p><ul><li>Provide Level 2/3 technical support.</li><li>Maintain IT documentation, configurations, and change records.</li><li>Ensure backup systems are properly configured and tested.</li><li>Participate in disaster recovery planning and testing.</li><li>Support internal audits and compliance requirements.</li></ul><p>Experience Requirements</p><ul><li>Minimum 5&ndash;8 years of experience in IT infrastructure and system administration.</li><li>Strong hands-on experience managing Active Directory and Microsoft 365.</li><li>Experience deploying and managing enterprise security tools.</li><li>Experience managing enterprise WiFi and network infrastructure.</li><li>Experience in server and endpoint hardening.</li></ul><p>Technical Skills</p><ul><li>Active Directory &amp; Group Policy management</li><li>Microsoft 365 Administration</li><li>Windows Server &amp; Windows 10/11 administration</li><li>Azure AD (Entra ID) basics</li><li>Network fundamentals (TCP/IP, VLANs, VPNs, Firewalls)</li><li>Backup and disaster recovery systems</li><li>Security tools deployment and monitoring</li><li>Patch management and vulnerability remediation</li></ul><p>Preferred Certifications</p><ul><li>Microsoft Certified: Windows Server or Microsoft 365 Administrator</li><li>Microsoft Azure Administrator (AZ-104)</li><li>CompTIA Security+</li><li>CompTIA Network+</li><li>ITIL Foundation (preferred)</li></ul><p>Education</p><p>Bachelor&rsquo;s degree in Information Technology, Computer Science, or related field (or equivalent experience).</p><p>Job Type: Full-time</p>

Senior IT & System Administrator

Muller's Solutions

<div><p>M&uuml;ller's Solutions is seeking an experienced Senior SAS &amp; Credit Risk Systems Administrator to join our innovative team. In this role, you will be pivotal in managing and optimizing the SAS environment and overseeing credit risk systems, ensuring robust analytics and reporting capabilities that drive strategic decision-making.</p><p>
As a Senior Administrator, you will work closely with data analysts and risk management teams to support and enhance SAS applications, ensuring high system availability and optimized performance. Your expertise will help the organization navigate complex credit risk assessments and reporting requirements effectively.</p>
Key Responsibilities:<ul>
<li>Administer and maintain SAS software and credit risk systems, ensuring optimal functionality and performance.</li>
<li>Oversee installation, updates, and configuration of SAS applications and related infrastructure.</li>
<li>Provide technical support and troubleshoot issues related to SAS and credit risk systems.</li>
<li>Collaborate with business users and data analysts to gather requirements and deliver effective SAS solutions for credit risk analytics.</li>
<li>Monitor system performance and implement enhancements to meet evolving business needs.</li>
<li>Develop and maintain documentation for systems administration procedures, processes, and standards.</li>
<li>Ensure compliance with data governance policies, industry regulations, and best practices.</li><br>
</ul><br>
<br>
<b>Requirements</b><br>
<ul><li>
5+ years of experience in SAS administration and credit risk systems management.</li><li>
Strong understanding of credit risk frameworks, analytics, and reporting processes.</li><li>
In-depth knowledge of managing and operating <b>SAS Analytics</b> and <b>Moody&rsquo;s CreditLens</b> systems.</li><li>
Minimum of <b>5 years of experience</b> in SAS development and automation.</li><li>
Ability to read logs and analyze performance to proactively identify issues.</li><li>
Experience in <b>report preparation</b>.</li><li>
Familiarity with best practices in SAS Analytics and Moody&rsquo;s CreditLens, including applying updates without impacting current operations.</li><li>
Must be <b>fluent in Arabic</b>.</li><li>
Hands-on experience with SAS software installation, configuration, and maintenance.</li><li>
Proficiency in scripting and automation to streamline SAS processes.</li><li>
Excellent problem-solving skills and attention to detail.</li><li>
Strong communication and interpersonal skills to collaborate effectively with cross-functional teams.</li><li>
Relevant certifications related to SAS or risk management are a plus.</li></ul><p></p><ul><li>
Personal Skills:</li><li><ul><li>
Strong analytical and organizational skills to understand business requirements and implement appropriate solutions.</li><li>
Effective communication skills with technical teams and end users.</li><li>
Training skills to guide users in efficiently utilizing different modules.</li></ul></li></ul><br>
<p></p><ul><li>
Educational Qualifications:</li><li><ul><li>
Bachelor&rsquo;s degree in <b>Computer Science</b>, <b>Software Engineering</b>, or any related field.</li><li>
Specialized certification in <b>developing or managing SAS Analytics</b> or <b>Moody&rsquo;s CreditLens</b> platform.</li></ul></li></ul><br>
<b>
Benefits</b><p><br>
Why Join Us:</p><p></p><p>
Opportunity to work with a talented and passionate team.</p><p>
Competitive salary and benefits package.</p><p>
Exciting projects and innovative work environment.</p></div>

Senior SAS & Credit Risk Systems Administrator

Search 10000+ Senior systems administrator jobs near you this March. New roles added regularly across leading industries. Apply today.

10000 senior systems administrator jobs Near Me

Senior Linux Systems Administrator

Senior Linux Systems Administrator

Senior IT Administrator

Senior IT & System Administrator

Senior SAS & Credit Risk Systems Administrator

Senior SAS & Credit Risk Systems Administrator

Senior SAS & Credit Risk Systems Administrator