linux systems administrator

SilverEdge Government Solutions

<div>Overview:
<div>
SilverEdge is a premier provider of innovative cyber, software, and intelligence solutions, addressing mission-critical challenges for the Department of Defense (DoD), Intelligence Community (IC), and beyond. We are dedicated to delivering impactful results to meet mission goals through cutting-edge technology and expertise. We are seeking a Linux Systems Administrator to join our dynamic team. This individual will play a pivotal role in developing innovative and effective solutions for our DoD customers within the IC sector.</div><div></div><div> 
The candidate will Analyze and resolve complex problems associated with server hardware, applications, and software integration. Configure and manage UNIX, Linux and Windows operating systems and install/load operating systems software, troubleshoot, maintain integrity of and configure network components, along with implementing operating systems enhancements to improve reliability and performance.</div>
Required Qualifications:
<ul><li>Extensive experience with VMWare / Linux</li><li>
Government issued clearance with poly.</li></ul>
About SilverEdge:
<div>
SilverEdge Government Solutions was founded on the belief that nurturing talent and collaborating closely with our customers enables us to think big and deliver the best for our country. Our mission is to bring top technology talent together to solve the world&rsquo;s most challenging problems while protecting the United States and our allies.SilverEdge Government Solutions, LLC is an Equal Opportunity Employer and applicants receive lawful consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or protected veteran status.</div></div>

Linux Systems Administrator

MANTECH

<div>MANTECH seeks a motivated, career and customer-oriented Linux Systems Administrator to join our team in either Las Cruces, New Mexico or Denver, CO. In this role, you will support enterprise Linux environments and data center infrastructure while helping ensure systems remain secure, reliable, and efficient. You will work closely with technical teams and customers to maintain systems, automate operational tasks, and provide hands-on support across physical, virtual, and cloud-based platforms.
Responsibilities include but are not limited to:<ul><li>
Managing and supporting Red Hat Enterprise Linux environments across physical, virtual, and cloud-based infrastructure supporting the daily operation and continuous improvement of Linux-based infrastructure and data center environments while ensuring systems remain reliable, documented, and aligned with mission needs</li><li>
Assisting users with application, account, hardware, and system-related issues while ensuring timely resolution</li><li>
Building, maintaining, updating, and retiring virtual, physical, and cloud-based Red Hat and Windows hosts</li><li>
Maintaining and supporting enterprise storage systems and hardware including servers, workstations, and network equipment</li><li>
Provisioning and decommissioning project resources such as Kubernetes namespaces, servers, and user workstations</li><li>
Performing data center operations including inventory, racking and cabling, hardware troubleshooting, and repairs</li><li>
Implementing security controls, maintaining documentation, and developing automation solutions to improve system efficiency</li></ul>
Minimum Qualifications:<ul><li>
5+ years of relevant technical experience to include Linux administration experience along with the ability to support enterprise infrastructure and data center operations.</li><li>
Experience administering Red Hat Enterprise Linux environments in enterprise or mission-critical settings</li><li>
Hands-on experience supporting physical and virtual infrastructure within data center environments</li><li>
Experience deploying and maintaining servers, workstations, and associated infrastructure components</li><li>
Experience troubleshooting hardware, operating systems, and infrastructure services</li><li>
Strong documentation skills with the ability to produce clear and usable technical documentation</li></ul>
Preferred Qualifications:<ul><li>
Candidates with additional experience supporting modern infrastructure technologies and enterprise environments will be well positioned for success in this role.</li><li>
Experience supporting Kubernetes or containerized environments</li><li>
Familiarity with enterprise storage platforms such as IBM ESS</li><li>
Experience supporting mixed Linux and Windows enterprise environments</li><li>
Experience developing automation scripts or tools to streamline administrative tasks</li></ul>
Clearance Requirements:<ul><li>
An active TS/SCI with Polygraph is required.</li></ul>
Physical Requirements:<ul><li>
Must be able to remain in a stationary position 50% of the time.</li><li>
Needs to occasionally move about inside office and data center environments to access equipment, racks, and hardware systems.</li><li>
Frequently communicates with co-workers, management, and customers. Must be able to exchange accurate information in these situations.</li></ul></div>

Astronics

<div>Join the Astronics team as a Senior Linux Systems Administrator!
Shape the Future of Aerospace Innovation
Join our corporate IT team as a Senior System Administrator specializing in Linux and cloud operations. In this high-impact role, you&rsquo;ll ensure the reliability, security, and performance of mission-critical Business and Engineering systems, including the Windchill (PLM) infrastructure, within a leading aerospace environment.
This role is hybrid, with onsite collaboration 1 day a week in our East Aurora, NY location. 

Your role will encompass:
<ul><li>Linux Administration: Maintain and optimize enterprise Linux systems, ensuring high performance, availability, and security.</li>
<li>Azure Cloud: Support and sustain cloud-based solutions, solve complex infrastructure challenges, and optimize resource utilization.</li>
<li>Windchill PLM Infrastructure Management: Oversee performance, upgrades, and support for Windchill to help engineers and business teams operate efficiently.</li>
<li>Business &amp; Engineering Systems Support: Provide end-to-end support for IT systems critical to engineering and business workflows.</li>
<li>Performance &amp; Incident Management: Analyze and resolve system issues promptly, minimizing downtime and ensuring operational reliability.</li>
<li>Collaboration with cross-functional teams to support new initiatives and improve system performance.</li></ul> 

Qualifications Required:
<ul><li>US Citizenship (as required by the International Traffic in Arms Regulations - ITAR)</li>
<li>4+ years&rsquo; experience as a Linux System Administrator in a large, regulated environment</li>
<li>Bachelor's Degree in IT, Computer Science, or related field or equivalent experience</li>
<li>Aerospace or manufacturing industry experience is preferred</li>
<li>Experience with Azure Cloud administration, including IaaS/PaaS operations and automation (Preferred: PowerShell, Azure CLI)</li>
<li>Hands-on knowledge of Windchill (PLM) infrastructure; experience with related system upgrades and integrations a plus</li>
<li>Solid understanding of IT operations supporting engineering systems (e.g., CAD/PLM tools)</li>
<li>Demonstrated problem-solving skills in large-scale IT environments</li>
<li>Strong troubleshooting, scripting, and ITIL-based incident management abilities</li>
<li>Excellent communication skills&mdash;confident working across IT and business functions</li></ul> 

Why You&rsquo;ll Love Working Here:
<ul><li>Flexibility that works: 9/80 schedule with every other Friday off</li>
<li>Direct influence on enterprise engineering systems and next-gen product development</li>
<li>Flexible hybrid schedule with collaborative, long-tenured IT teams</li>
<li>Strong benefits with a focus on career growth and work/life balance</li></ul> 

Compensation &amp; Benefits:
<ul><li>Base salary: $80,000 through $120,000, influenced by several factors including experience, skill set, education, certifications, market conditions, and business needs.</li>
<li>Competitive rewards: Benefits start the first of the month after hire, quarterly bonus tied to company profitability, 401(k) with 3% company contribution, Employee Stock Purchase Plan, paid holidays (including a full Christmas week shutdown), and comprehensive health/vision/dental coverage.</li>
<li>Ready to Soar? Apply Today!</li></ul></div>

Senior Linux Systems Administrator

<div>MANTECH seeks a motivated, career and customer-oriented Senior Linux Systems Administrator to join our team in either Las Cruces, New Mexico or Denver, CO. In this role, you will support mission-critical infrastructure by designing, implementing, and maintaining enterprise Linux environments. You will work closely with cross-functional teams to ensure systems are secure, reliable, and optimized while also helping mentor junior administrators and contribute to infrastructure modernization initiatives.
Responsibilities include but are not limited to:<ul><li>
Designing, implementing, and maintaining enterprise Linux environments with a focus on Red Hat Enterprise Linux (RHEL)</li><li>
Developing and maintaining infrastructure automation using tools such as Puppet, Ansible, or similar platforms</li><li>
Managing physical and virtual server infrastructure across data center environments</li><li>
Leading infrastructure projects and initiatives from planning through implementation</li><li>
Mentoring junior administrators and providing technical guidance across the team</li><li>
Performing hardware installations, upgrades, troubleshooting, and maintenance within data center facilities</li><li>
Implementing security best practices, monitoring system performance, and optimizing system availability</li></ul>
Minimum Qualifications:<ul><li>
8+ years of relevant technical experience to include Linux system administration experience with a strong focus on Red Hat Enterprise Linux (RHEL) and hands-on infrastructure support in enterprise environments</li><li>
Proven experience with configuration management and automation tools such as Puppet, Ansible, Chef, or SaltStack</li><li>
Hands-on experience supporting data center operations including server hardware installation and troubleshooting</li><li>
Demonstrated experience mentoring junior administrators or serving in a senior technical or team leadership capacity</li><li>
Strong troubleshooting, system performance tuning, and infrastructure support experience</li></ul>
Preferred Qualifications:<ul><li>
Candidates who bring additional DevOps, cloud, or containerization experience will be well positioned to support evolving infrastructure initiatives.</li><li>
Experience with container technologies such as Docker, Podman, or Kubernetes</li><li>
Familiarity with CI/CD pipelines and DevOps practices</li><li>
Experience with enterprise monitoring and alerting tools such as Nagios, Zabbix, or Prometheus</li><li>
Experience supporting or integrating with cloud platforms such as AWS, Azure, or Google Cloud Platform</li></ul>
Clearance Requirements:<ul><li>
An active TS/SCI with Polygraph is required.</li></ul>
Physical Requirements:<ul><li>
Must be able to remain in a stationary position 50% of the time.</li><li>
Needs to occasionally move about inside the office or data center environment to access equipment, racks, and hardware systems.</li><li>
Frequently communicates with co-workers, management, and customers, which may involve delivering technical updates or briefings. Must be able to exchange accurate information in these situations.</li></ul></div>

Muller's Solutions

<div>This position functions around the clock, 24/7/365, to deliver extensive support for the enterprise RHEL server environment. The role involves the installation, configuration, management, operation, and maintenance of all RHEL server systems and RHEL Clusters (including Pacemaker). It is essential to ensure system stability through daily operations, patch management, monitoring, and troubleshooting, as well as providing support for SAP environments that operate on RHEL. 
Key Responsibilities:<ul><li>
Install, configure, and manage Linux servers and applications to ensure optimal performance and high availability.</li><li>
Monitor system performance, perform routine maintenance, and apply updates as needed.</li><li>
Identify and resolve issues related to the operating system, hardware, and network configurations.</li><li>
Implement and enforce security best practices within Linux environments, including firewalls, user permissions, and file integrity measures.</li><li>
Assist in the deployment and management of applications hosted on Linux servers.</li><li>
Document system configurations, procedures, and troubleshooting documentation for reference by the team.</li><li>
Support backup and recovery processes to maintain data integrity and availability.</li><li>
Collaborate with development teams to enhance deployment processes and ensure effective integration of Linux applications. Ensure that all RHEL systems are managed in accordance with vendor recommendations and security best practices, while also maintaining compliance with NCA, NIC, and SEC Cybersecurity regulations.</li><li>
Contribute to the management of the operating system lifecycle, including planning for version upgrades and decommissioning.</li><li>
Install, configure, manage, operate, and maintain RHEL server systems and clusters (e.g., RHEL 7, 8, 9). Provide daily operational support, including OS installation, monitoring, troubleshooting, virus protection, and resource management. Manage RedHat HA Extension (PACEMAKER) clusters and support SAP, SAP HANA, and SAP S/4HANA environments on the RHEL platform. Regularly review system logs and OS behavior to proactively monitor and address potential issues.</li><li>
Build strong relationships with the ERP, application, database, and web hosting teams for daily support, troubleshooting, and scheduled maintenance activities.
</li><li>Manage and maintain client agents for server monitoring (SCOM, AppDynamic) and server management (SCCM). Create and maintain technical and detailed design documentation, as well as technical operation documentation. Create, maintain, and delete user/group accounts and implement account policies. Raise and manage support tickets with RedHat, including troubleshooting, log collection, and follow-up.</li></ul> 

Requirements 
Requirements:<ul><li>
Degree: Bachelor&rsquo;s degree in Computer Science, Information Technology, or a related field.</li><li>
Years of Experience: 3-5+ years of practical experience in Linux System Administration (RHEL/CentOS) in an enterprise context.</li><li>
Special Technical Skills: Proficient in RHEL (versions 7, 8, 9) and RHEL Clustering (Pacemaker). Extensive experience in supporting SAP/SAPHANA on RHEL. Demonstrated ability in the installation, monitoring, troubleshooting, and patch management of operating systems. Experience in managing user and group accounts. Familiarity with monitoring solutions such as SCOM/AppDynamics and management tools like SCCM.</li><li>
Special Generic Skills: Capability to work in a 24/7/365 shift environment. Excellent documentation skills, including design and operational documentation. Strong teamwork abilities for effective collaboration with application and database teams. Awareness of cybersecurity regulations (NCA, NIC).</li><li>
Decision Authority Matrix: Authorized to install, configure, patch, and maintain all RHEL systems and clusters. Responsible for daily operations, monitoring, and troubleshooting of the RHEL environment. Empowered to create and manage user/group accounts and their associated policies. Oversee the entire lifecycle of vendor support tickets for RedHat.</li></ul>
Preferred Qualifications:<ul><li>
Certifications such as Red Hat Certified System Administrator (RHCSA) or Linux Professional Institute Certification (LPIC) are a plus.</li><li>
Experience with cloud services (AWS, Azure) for deploying and managing Linux applications.</li><li>
Familiarity with configuration management tools (e.g., Ansible, Puppet).</li><li>
Ability to manage multiple priorities and projects in a fast-paced environment.</li><li>
Strong communication skills to work effectively with remote teams.</li></ul> 

Benefits 
Why Join Us:
Opportunity to work with a talented and passionate team.
Competitive salary and benefits package.
Exciting projects and innovative work environment.</div>

Linux OS System Administrator(Saudi National Only)-Remote

<div><div><div><div><div><div><div><div><div>SMX is seeking a mid-level Information Assurance Linux System Administrator. The Administrator will support our NAWCAD customer at Patuxent River Naval Air Station.</div>
</div>
</div>Essential Duties &amp; Responsibilities
<ul>
<li>Monitor ticketing system for tasks</li>
<li>Monitor/Manage/Schedule/Forecast Upcoming IA Work</li>
<li>Work with a large variety of Data Center teams to alleviate Cyber findings and concerns</li>
<li>Attend collaboration meetings to address STIG/EvaluateSTIG discrepancies</li>
<li>Complete STIG checklists</li>
<li>ACAS scanning and reports</li>
<li>Support vulnerability detection, remediations, and mitigations</li>
</ul>
Required Skills/Experience
<ul>
<li>Clearance Required: Top Secret
<ul><li>Interim TS required to start</li>
</ul></li><li>2-4 years of Linux/Unix administration experience</li>
<li>Experience in DoD Information Assurance/Cyber policy and procedures to include hardening of systems, implementing STIGs, and scanning</li>
<li>Knowledge of NIST guidelines and Risk Management Framework (RMF)</li>
<li>DoD 8140 compliant certification (Examples of minimum acceptable certifications: CCNA Security, CySA+, G SEC, Security+ CE, SSCP)</li>
<li>Detail-oriented and able to work multiple assignments autonomously and in a team setting</li>
<li>Must be able to interact with peers, management, and senior engineers in a constantly evolving environment to ensure a positive customer experience and atmosphere in the workplace</li>
</ul>
Desired Qualifications
<ul>
<li>Bachelor's or higher degree</li>
<li>Advanced 8140 compliant certification</li>
</ul>
</div></div>Application Deadline: 4/6/2026

#cjpost #LI-ONSITE</div></div> 
</div><div>
At SMX&reg;, we are a team of technical and domain experts dedicated to enabling your mission. From priority national security initiatives for the DoD to highly assured and compliant solutions for healthcare, we understand that digital transformation is key to your future success.

We share your vision for the future and strive to accelerate your impact on the world. We bring both cutting edge technology and an expansive view of what's possible to every engagement. Our delivery model and unique approaches harness our deep technical and domain knowledge, providing forward-looking insights and practical solutions to power secure mission acceleration.

SMX is an Equal Opportunity employer including disabilities and veterans.

<div></div>Selected applicant may be subject to a background investigation and/or education verification.

SMX does not sponsor a new applicant for employment authorization or immigration related support for this position (i.e. H1B, F-1 OPT, F-1 STEM OPT, F-1 CPT, J-1, TN, E-2, E-3, L-1 and O-1, or any EADs or other forms of work authorization that require immigration support from an employer).</div></div>

Information Assurance Linux Administrator (5143)

Arkham Technology Ltd.

Must be U.S. citizen due to U.S. Government contract requirements.Are you tired of office politics and bureaucracy? Do you want to be part of a rapidly growing team?Arkham Technology is doubling in size this coming year. We focus on getting things done without the drama and politics and that has resulted in our rapid growth! We need more great people to help us keep up our momentum, and to add to our fun. We have a cohesive team focused on innovative projects. Free snacks, espresso, coffee and group activities are all part of the fuel that propels us forward.If you love working on fun projects big and small, are excited about finding solutions to problems&hellip; if you love working with amazingly genuine people, this is the place for you. We are looking for exceptional folks who love what they do and want to work with others who are just as passionate. We think we have the best work environment out there but apply for a position and come take a look.Must be eligible to obtain and maintain a DoD Secret clearance. Active clearance preferred.Systems AdministratorJob Overview: As a Systems Administrator at Arkham Technologies, you will be responsible for the maintenance, configuration, and reliable operation of computer systems, servers, and networks. You will ensure the integrity and security of IT infrastructure while providing technical support and troubleshooting to end-users.Job Requirements:<ul><li>Install, configure, and maintain operating systems, software applications, and system management tools</li><li>Manage and monitor servers, network devices, and related systems to ensure optimal performance and availability</li><li>Implement security measures to protect systems and data from unauthorized access or breaches</li><li>Perform regular system backups and recovery procedures</li><li>Collaborate with IT teams to design and implement infrastructure upgrades, enhancements, and optimizations</li><li>Provide technical support and assistance to end-users, troubleshooting hardware, software, and network issues</li><li>Document system configurations, procedures, and troubleshooting steps</li><li>Stay current with industry trends, best practices, and emerging technologies related to systems administration</li></ul>Requirements:<ul><li>Bachelor's degree in Computer Science, Information Technology, or related field (or equivalent work experience)</li><li>Proven experience as a Systems Administrator or similar role.</li><li>Proficient in Linux system administration to support engineering teams working in a Linux-based development environment.</li><li>In-depth knowledge of operating systems (Windows, Linux/Unix) and server technologies</li><li>Familiarity with virtualization technologies (VMware, Hyper-V)</li><li>Experience with network protocols, routing, and switching</li><li>Strong understanding of cybersecurity principles and best practices</li><li>Excellent problem-solving and troubleshooting skills</li><li>Effective communication and interpersonal abilities</li><li>Ability to work independently and collaboratively in a fast-paced environment</li><li>Relevant certifications (e.g., CompTIA A+, Network+, Security+, Microsoft Certified Systems Administrator) are a plus</li></ul>Job Type: Full-timePay: $70,000.00 - $80,000.00 per yearBenefits:<ul><li>401(k)</li><li>401(k) matching</li><li>Dental insurance</li><li>Flexible spending account</li><li>Health insurance</li><li>Life insurance</li><li>Paid time off</li><li>Referral program</li><li>Relocation assistance</li><li>Retirement plan</li><li>Vision insurance</li></ul>License/Certification:<ul><li>CompTIA Security+ (Required)</li></ul>Work Location: In person

Systems Administrator

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Linux Systems Administrator

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Linux OS System Administrator(Saudi National Only)-Remote

Information Assurance Linux Administrator (5143)

Systems Administrator