Linux Systems Administrator

**ACTIVE TOP SECRET SECURITY CLEARANCE REQUIRED**

Clearance Required: Top Secret
Location: Dayton, OH (100% onsite)
Experience Level: Senior (8+ years)
Industry: Federal / HPC / Defense

Are you a Linux guru with a passion for high-performance computing (HPC) and a desire to work on mission-critical technology that truly matters? D2 is looking for a cleared Linux Systems Administrator to join our team supporting key Federal Government customers in Dayton, OH.

In this role, you’ll serve as a technical lead and subject matter expert (SME) in Linux systems administration for HPC environments. You’ll play a hands-on role in configuring, securing, and optimizing advanced computing platforms to support some of the nation’s most impactful defense missions.

What You’ll Be Doing:

• Administer and support RHEL-based Linux systems, including installation, patching, upgrades, backups, and performance tuning.

• Troubleshoot and resolve issues across OS, hardware, applications, and networking layers.

• Apply STIGs and hardening practices to meet DoD cybersecurity standards.

• Use tools like Ansible to automate server configurations and maintain system consistency.

• Monitor system health, generate performance metrics, and analyze logs to ensure system integrity and availability.

• Handle file system management, NFS/CIFS/SMB permissions, and firewall configurations.

• Maintain documentation, SOPs, and provide real-time support to stakeholders and leadership.

What You Bring:

• 8+ years of hands-on Linux systems administration experience (preferably RHEL).

• Strong skills in scripting and automation (e.g., Bash, Python, Ruby, or Perl).

• Experience with infrastructure tools like Ansible, Puppet, or Chef.

• Solid understanding of TCP/IP protocols and enterprise networking.

• Comfortable working directly with senior military and government stakeholders.

• Excellent communication, documentation, and teamwork skills.

• Strong troubleshooting skills and the ability to work independently under general supervision.

Required Certifications:

• CompTIA Security+ CE

• RHEL or comparable Linux certification

Why Join D2?

At D2, you’re not just taking a job, you’re joining a purpose-driven mission. You’ll have the chance to work alongside top-tier professionals and support systems that are vital to national defense. We offer stability, growth opportunities, and a collaborative environment where your contributions make a tangible impact.

U.S. Citizenship and an active TS Clearance are required.

Ready to bring your Linux expertise to a role that truly makes a difference? Apply now and help shape the future of secure computing.

Additional Information

• All your information will be kept confidential according to appropriate guidelines.
• Compensation is unique to each candidate and relative to the skills and experience they bring to the position. The salary range for this position is typically $149k-159k. This does not guarantee a specific salary as compensation is based upon multiple factors such as education, experience, certifications, and other requirements, and may fall outside of the above-stated range.
• Highlights of our benefits include Health/Dental/Vision, 401(k) match, Accrued PTO, STD/LTD/Life Insurance, Referral Bonuses, professional development reimbursement, and more!

D2 Consulting is committed to a merit-based recruitment process and encourages applications from all qualified individuals.  As a Veteran-Owned Small Business, we particularly welcome applications from veterans who have the requisite skills and experience.  Job applicants that are interested in one of our openings and may require a reasonable accommodation to participate in the job application or interview process, should contact us to request an accommodation.