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Linux System Administrator - job 2 of 2

CeLeen, an operating firm of Command Holdings, is seeking a Linux System Administrator to support a contract within the Department of Energy. This position would support a critical science and engineering computing environments. The individual will join a fast-paced, dynamic, agile team environment passionate about the delivery of computational engineering services and infrastructure. The ideal candidate is well rounded, having experience with modern systems architectures, development methods, tools, and the underlying infrastructure. We are looking for a self-motivated, driven, problem solver to join our team.

Duties and Responsibilities may include but are not limited to:

  • Design and develop solutions to complex applications problems, system administration issues, or network concerns.
  • Perform systems management and integration functions.
  • Apply fundamental concepts, processes, practices, and procedures on technical assignments.
  • Creating, running and managing Ansible playbooks.

Work Environment:

  • Moderate noise (i.e. business office with computers, phone and printers) and /or occasional Loud noise (airfield, large equipment).
  • Ability to sit at a computer terminal for an extended period of time.

Physical Demands:

  • While performing the responsibilities of the job, the employee is required to sit, stand, talk, and hear.
  • Employee is often required to sit and use their hands and fingers to operate a computer.
  • Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions.

Travel:

  • 0-10% / Minimal travel expected: offsites, meetings, training, a conference.

CeLeen, an operating firm of Command Holdings, a Pequot company, is a tribally-owned firm providing management consulting services to U.S. government agencies.

Pursuant to PL 93-638, as amended, preference will be given to qualified Native Americans and spouses in all phases of employment.

At CeLeen, our employees are the embodiment of our success as a firm. Our team is comprised of a tenacious group of professionals located across the globe. It includes military veterans and spouses of active duty troops, former federal employees, policy experts, academics, attorneys, and technical and business experts, all of whom share a strong work ethic and the skills to succeed in both collaborative and independent environments. CeLeen is invested in the long-term success of both our clients and colleagues for the right reasons. Our dedication to putting good government into practice is underpinned by a merit-based culture that measures success by productivity and credibility.

CeLeen will provide reasonable accommodations to applicants who are unable to utilize our online application system due to a disability. Please send your request to the Human Resources Team.

CeLeen is committed to equal employment opportunity based on merit. We recruit, employ, train, compensate, and promote without regard to race, religion, color, national origin, age, sex, disability, protected veteran status, or any other basis protected by applicable federal, state, or local law, and in accordance with EO 14173.

CeLeen's Affirmative Action Program is available to any employee or applicant for employment for inspection upon request, to the extent required by federal regulations. The Affirmative Action Program can be accessed during normal business hours by making an appointment with the Human Resources Team.

Basic Qualifications

  • Bachelor's Degree plus 2 years of server experience //OR// 6 years of experience supporting physical and virtual Linux Servers in lieu of a degree.
  • Must have experience in LINUX Systems Administration.
  • Experience running RHEL (Red Hat Enterprise Linux) and Ubuntu OS, including installation, configuration, patching and troubleshooting.
  • Experience with creating, running and managing Ansible playbooks.
  • Experience in another IT field, such as Storage, Networking, Database or Cyber.
  • Ability to obtain and maintain a DOE-Q Clearance.
  • Strong customer service, communication, and documentation skills.
  • Ability to pass a federal background investigation including fingerprinting.
  • Must be a U.S. citizen.
  • Professional proficiency in English is required.
  • Applicants must be currently authorized to work in the United States on a full-time basis. CeLeen will not sponsor applicants for work visas for this position.

Preferred Qualifications

  • Current, active DOE-Q or L Clearance or Active DOD Secret or Top Secret Clearance.
  • Bachelor's Degree in Computer Science, Information Management or relevant field.

CeLeen offers a competitive benefits plan including:

  • Health, Dental, and Vision Insurance
  • Flexible Spending Accounts
  • Life and Disability Insurance
  • 401(k)
  • Paid Time Off
  • Paid Holidays
  • Employee Assistance Program
  • Pet Insurance

Eligibility requirements apply.

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Average salary estimate

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What You Should Know About Linux System Administrator, Command Holdings

CeLeen, a respected operating firm of Command Holdings, is on the lookout for an enthusiastic Linux System Administrator to join our dynamic team in support of vital contracts with the Department of Energy. In this role, you'll immerse yourself in a fast-paced environment where you'll help deliver cutting-edge computational engineering services and infrastructure. If you're a self-driven problem solver with a knack for modern systems architectures and tools, this opportunity might be just what you've been searching for. Your responsibilities will include designing innovative solutions to complex application problems and tackling system administration and network issues head-on. As part of our collaborative team, you'll perform systems management and integration tasks, while also managing Ansible playbooks to streamline processes. We appreciate the diversity of experience, so whether you have a Bachelor's Degree and a couple of years of server experience or a solid six years in Linux Server support without a degree, your qualifications may align with our needs. At CeLeen, we pride ourselves in creating an inclusive environment where every team member's contribution is valued. Our commitment to excellence in service delivery is matched only by our dedication to the career growth of our employees. Are you ready to tackle technical challenges while allowing your skills to shine? If so, consider joining us in this rewarding Linux System Administrator position and take your career to new heights!

Frequently Asked Questions (FAQs) for Linux System Administrator Role at Command Holdings
What are the primary responsibilities of a Linux System Administrator at CeLeen?

As a Linux System Administrator at CeLeen, you'll be tasked with designing and developing solutions for complex applications and system administration challenges. This includes performing systems management and integration functions, as well as creating, running, and managing Ansible playbooks to improve operational efficiency. Your role is essential in ensuring that our critical science and engineering computing environments are secure and effective.

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What qualifications are required for the Linux System Administrator position at CeLeen?

To be considered for the Linux System Administrator position at CeLeen, candidates must have either a Bachelor's Degree accompanied by two years of server experience or six years of hands-on experience supporting physical and virtual Linux servers. Proficiency in RHEL and Ubuntu OS, alongside a solid grasp of creating and managing Ansible playbooks, is essential.

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Is prior experience in other IT fields beneficial for a Linux System Administrator at CeLeen?

Absolutely! Experience in other IT domains such as Storage, Networking, Database, or Cybersecurity can be highly beneficial to your application for the Linux System Administrator role at CeLeen. We value diverse IT backgrounds as they enable a holistic approach to solving problems within our systems.

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What are the working conditions like for a Linux System Administrator at CeLeen?

Linux System Administrators at CeLeen can expect a business office environment that combines moderate noise from computers and phones with occasional louder sounds from equipment. While you may spend a considerable amount of time at a computer terminal, the role also supports engagement with a vibrant team, fostering collaboration and innovation.

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Does CeLeen provide opportunities for career growth for Linux System Administrators?

Yes, CeLeen is highly committed to the long-term success of our employees, offering various professional development opportunities aimed at career growth. As part of our team, you'll have access to resources and support designed to help you enhance your skills and advance within the organization.

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Common Interview Questions for Linux System Administrator
How do you approach troubleshooting a Linux server issue as a Linux System Administrator?

When faced with a Linux server issue, I typically start by gathering information about the problem, checking system logs, and understanding recent changes made to the environment. I then use systematic troubleshooting approaches to isolate the cause, applying solutions based on best practices. Clear documentation of the process is also crucial for future reference.

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Can you explain how Ansible playbooks work and their relevance in your role?

Ansible playbooks are essential as they automate software provisioning, configuration management, and application deployment tasks. In my role, I create, run, and manage these playbooks to streamline operations and ensure consistency across environments. This not only saves time but also minimizes the risk of human error.

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What methods do you use to maintain system security as a Linux System Administrator?

To maintain system security, I implement regular updates and patches, configure firewalls properly, and ensure secure configurations. I also monitor logs for unusual activity and regularly conduct security audits. Staying informed about the latest security threats is crucial, so I actively engage with the cybersecurity community to utilize best practices.

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How do you collaborate with other IT departments to enhance system performance?

Collaborating with other IT departments involves regular communication and alignment on project goals. I share my insights from systems administration to find common ground with networking, storage, and database teams. We often hold joint meetings to discuss interdependencies, share updates, and coordinate efforts to improve overall system performance.

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Describe your experience with RHEL and Ubuntu operating systems.

My experience with RHEL and Ubuntu includes installation, configuration, patch management, and troubleshooting. I appreciate the differences between these distributions and leverage their strengths according to our organizational needs. Understanding both allows me to manage diverse workloads and environments efficiently.

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What can you tell us about your customer service skills as a Linux System Administrator?

Customer service skills are paramount for a Linux System Administrator. I ensure that I listen actively to user concerns, provide clear explanations, and resolve issues promptly. I maintain a positive attitude, which helps in building trust with colleagues and enhancing the overall user experience.

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What backup and recovery strategies do you consider for Linux servers?

For Linux server backup and recovery, I implement a combination of scheduled backups using tools like rsync and automated scripts. I carefully plan the recovery process to ensure minimal downtime, frequently testing recovery procedures to validate their effectiveness in actual scenarios, which is crucial for disaster recovery.

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What logging and monitoring tools are you familiar with as a Linux System Administrator?

I have experience using several logging and monitoring tools, including syslog for logging, as well as monitoring solutions like Nagios and Zabbix. These tools help me track performance metrics, set alerts, and gain insights into system health, enabling proactive management of our infrastructure.

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Can you walk us through your process for updating software and operating systems?

My process for updating software and operating systems involves planning and reviewing change logs to anticipate potential impacts, followed by a staged implementation approach. First, I update in a testing environment before propagating updates to production to minimize risk. Documentation is maintained throughout to support smooth rollbacks if needed.

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How do you ensure effective communication with non-technical stakeholders?

To ensure effective communication with non-technical stakeholders, I focus on simplifying complex technical jargon into easy-to-understand language. I encourage questions, provide clear summaries of issues or project updates, and utilize visual aids when necessary. This approach helps build bridges between technical and non-technical teams.

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Full-time, on-site
DATE POSTED
April 9, 2025

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