senior linux systems administrator

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

MANTECH

<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>

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

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

California Institute of Applied Technology

<div>Description:

Schedule - Class schedule works well even if you already have a daytime job
Work from Home (WFH) - Remote work must be performed while residing in California, New Mexico or Florida
CIAT Location: San Diego, CA and Albuquerque, NM
Reports to: Dean of Education (DOE)
Status: Non-Exempt
Employment Type: Variable-Hour (Part-Time)
Summary
Are you passionate about positively changing the lives of others? California Institute of Applied Technology (CIAT) is growing and seeking educators and professionals with a passion for mentoring others. If this is you, please contact us! CIAT prepares students for professional success by offering practical training in today&rsquo;s most competitive technology fields to make sure students are job-ready. With a large selection of courses, flexible schedules, and an online campus, we aim to empower the working student. We are laser-focused on student success, whether just starting out, making a career change, or transitioning into civilian life, CIAT prepares students for success!
Teaching:<ul><li>
Available to teach synchronous online courses via Microsoft Teams on Monday and Tuesday every week</li><li>
Plan and organize instruction in ways that maximize student learning and engagement</li><li>
Modify, where appropriate, instructional methods and strategies to meet diverse student&rsquo;s needs</li><li>
Employ appropriate teaching and learning strategies to communicate subject matter to students</li><li>
Current certifications in subjects taught</li></ul>
Mastery of Subject Matter:<ul><li>
Demonstrate a thorough and accurate knowledge of their field or discipline</li><li>
Connect their subject matter with related fields</li><li>
Stay current in their subject matter through professional development, through involvement in professional organizations, and attending professional meetings, conference or workshop</li></ul>
Adhering to College Policies and Procedures:<ul><li>
Ensure Student Database is fully updated and accurate at all times regarding student attendance and grade record information</li><li>
Maintain compliance with accreditation related to instructional and the quality of education, scheduled class hours requirements and CIAT policies and procedures</li><li>
Submit documentation: sign-in attendance, pre-post exams, lab sheets, student snapshots, and accreditation/state required documents and others as required</li><li>
Communicate to management requirements for textbooks, handouts, supplies, equipment, exam vouchers and other items needed with sufficient notice to ensure timely and cost-effective procurement prior to class</li><li>
Promote collaboration with other staff members and participate in the implementation of new projects, ideas, etc.</li><li>
Adhere to the CIAT business casual attire. Clothing should be neat, clean, and without rips and holes. We are able to accommodate polo shirts. Please refer to the CIAT Employee Handbook for the complete policy. T-shirts, caps, hooded sweaters, and shorts are not permitted</li></ul>
Requirements:
<ul><li>Information Technology Instructors must provide official transcripts of bachelor's degree or higher (must be from an accredited institution) and certification on the subject being taught</li><li>
We are looking for instructor with the following certification: CompTIA Linux+</li><li>
At least three years&rsquo; experience in the respective field OR two years of teaching experience</li><li>
Synchronous online teaching experience preferred</li><li>
Advanced subject matter expertise preferred with a commitment to ongoing professional development and staying current with developments in the field</li><li>
Effective presentation skills, communication and technology skills</li><li>
Good working knowledge of MS Office applications including Microsoft Teams, Word, Excel, and PowerPoint as well as learning technologies such as Canvas</li><li>
Work independently with minimal supervision, with a high level of dependability</li><li>
Ability to multitask</li><li>
Problem solves rapidly and effectively, in a timely manner</li><li>
Ability to work collaboratively with colleagues, academic departments, and administration to support student success, achieve institutional goals and contribute to a positive and inclusive culture</li><li>
Commitment to fostering an inclusive and supportive learning environment that respects the diversity of students' backgrounds, experiences, and perspectives</li><li>
Knowledge of current trends, best practices, and didactic approaches in higher education</li><li>
Demonstrated ability to deliver engaging and effective lesson plans that meet the diverse needs of students</li><li>
Strong communication skills, both verbal and written, with the ability to effectively convey information and interact with students, colleagues, and others</li><li>
Possess high ethical standards, being an example of professionalism to others</li><li>
Compliance with all college policies, procedures, and regulations, including those related to academic integrity, student conduct, and instructional delivery</li><li>
Must be able to embody CIAT&rsquo;s mission, vision and values</li></ul>
Position Type and Expected Hours of Work
Days and hours of work are usually Monday through Friday, but weekend and evening hours may be required. Live classes are scheduled twice per week, on Monday and Tuesday from 6:00 pm to 9:30 pm (Pacific Time).
Supervisory Responsibility
This position has no supervisory responsibilities.
Values
Values such as integrity, excellence, customer service, teamwork and mutual respect are some of those that remain constant, regardless of changes in our company. When identifying company values, it is important that those values are being demonstrated in the course of business each day. Our values set expectations for how employees and managers interact with every person while representing the company.<ul><li>
We are passionate about education and student success</li><li>
We value integrity and excellence in our employees and students</li><li>
We treat ourselves and our students with dignity and respect</li><li>
We believe in and encourage innovation at our school to better help our students succeed</li><li>
We have a customer centric focus and we want people highly committed to achieving goals, where our success equals student&rsquo;s success</li><li>
We are accountable for our actions and focus on improvements moving forward</li><li>
We have a growth mindset with a sincere belief that every student can do better and achieve their goals</li><li>
We expect every employee to be an example of conduct and professionalism, being a role model to students and colleagues</li><li>
We commit to fostering an inclusive and supportive learning environment that respects the diversity of students' backgrounds, experiences, and perspectives</li><li>
We foster lifelong learning and professional development</li></ul>
Physical Demands
These physical demands are representative of the physical requirements necessary for an employee to successfully perform the essential functions of the job. Reasonable accommodation can be made to enable people with disabilities to perform the described essential functions:<ul><li>
This may be considered a sedentary position since essential functions of this role may require sitting for extended periods of time</li><li>
Ability to type, use a computer to search for information and input information while speaking to others</li><li>
Daily use of a personal computer and related software applications at a workstation</li><li>
Some tasks that require making repetitive hand movements in the performance of daily duties while using a computer</li><li>
Requires dependability and excellent attendance records</li><li>
May require occasional travel to conduct CIAT business</li><li>
The employee may frequently lift and move up to 10-15 pounds of materials, books, etc.</li><li>
The employee will be required to compute simple mathematical calculations as a normal part of this role</li></ul>
Work Environment
While performing the responsibilities of this remote position, the job holder will work in a home office environment. Reasonable accommodations may be made to enable people with disabilities to perform the essential functions of the job. This role routinely involves using standard office equipment such as computers, phones, and virtual communication tools. Employees are expected to ensure that their home office is a safe and ergonomic working environment.
Employees must maintain data security and confidentiality in accordance with company policies and use secure connections for all work-related activities. Expectations regarding work hours, availability, and time tracking will be clearly communicated and must be adhered to.
The company is not responsible for maintaining home office environments beyond the provision of reasonable accommodations and necessary work-related equipment. Workers' compensation and liability for injuries that occur in the home office will be covered as per company policy and applicable laws.
This remote work policy is designed to comply with all relevant local, state, and federal laws.
AAP/EEO Statement
California Institute of Applied Technology provides equal employment opportunities (EEO) to all employees and applicants for employment without regard to race, color, religion, sex, national origin, age, disability, or genetics. In addition to federal law requirements, the California Institute of Applied Technology complies with applicable state and local laws governing nondiscrimination in employment in every location in which the company has facilities. This policy applies to all terms and conditions of employment, including recruiting, hiring, placement, promotion, termination, layoff, recall, transfer, leaves of absence, compensation, and training. California Institute of Applied Technology expressly prohibits any form of workplace harassment based on race, color, religion, gender, sexual orientation, gender identity or expression, national origin, age, genetic information, disability, or veteran status. Improper interference with the ability of California Institute of Applied Technology&rsquo;s employees to perform their job duties may result in discipline up to and including discharge.
Other Duties
Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee for this job. Duties, responsibilities and activities may change at any time, with or without notice.
#ZR</div>

CompTIA Linux+ Adjunct Instructor

<div>RHEL Virtualization Engineer / Systems Administrator
Clearances Required: Active DoD Secret
Location: Huntsville, Alabama, United States
Job Description
TCS is searching for a RHEL Virtualization Engineer / Systems Administrator to support our Missile Defense Agency (MDA) customer in Huntsville, AL. The GMD program is a portion of the Missile Defense Agency's (MDA) system to protect the US and our allies from ballistic missile attack.
**********************************************************************
This is an in-office position. Work from home is not available.
**********************************************************************
Responsibilities:
<ul><li>Support infrastructure systems on Red Hat Linux (RHEL)-based platforms</li>
<li>Support and maintain high availability, distributed, multi-clustered server infrastructure and systems</li>
<li>Responsible for server infrastructure analysis, optimization, and capacity planning</li>
<li>Accountable for system administration, identity and authentication, information system security accreditation, data storage and backup, physical infrastructure maintenance, and automation development</li>
<li>Technical writing/creation of formal documentation such as architecture diagrams, technical designs, and SOPs</li>
</ul>
Required:
<ul><li>Bachelor's degree in a Science, Technology, Engineering or Math discipline with 2 years of 
experience OR Master&rsquo;s degree with 0 years of experience</li>
<li>Minimum of 2 years of experience with Systems Administration for Linux Operating Systems such as RedHat Enterprise Linux (RHEL)</li>
<li>Must have a DoD 8140 certification (ex: Security + CE)</li>
<li>U.S. citizenship with an active Secret clearance</li>
</ul>
Desired:
<ul><li>Experience with RHEL and Cisco Networks</li>
<li>Experience with Red Hat Satellite servers and configuration</li>
<li>Experience with VMWare ESXi, VMWare vCenter</li>
<li>Experience with LAN and WAN management</li>
<li>Familiarity with Network Technologies and Cybersecurity</li>
<li>Strong systems administrator experience, specifically in Linux Operating System environments</li>
<li>Experience with scripting using tools such as Python, Perl, Bash, PowerShell, etc.</li>
<li>Experience with network administration and related infrastructure</li>
<li>Experience with hardware installation and maintenance to include firmware upgrades</li>
<li>Candidate must demonstrate strong troubleshooting and problem-solving skills</li>
</ul>
Benefits:
<ul><li>Highlights of our benefits include BC/BS Health, Dental, Vision, 401(k) match, Profit Sharing, Flexible Time Off, STD/LTD/Life Insurance, Referral Bonuses, professional development reimbursement, vacation, sick leave, and maternity/paternity leave.</li>
</ul>
Apply online or visit us at www.tcs-inc.com/careers
TCS, Inc. is an EEO Employer.</div>

RHEL Virtualization Engineer / Systems Administrator

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Linux OS System Administrator(Saudi National Only)-Remote

CompTIA Linux+ Adjunct Instructor

RHEL Virtualization Engineer / Systems Administrator

CompTIA Linux+ Adjunct Instructor