Unix​/Linux Administrator

About DMI

DMI is a leading provider of digital services and technology solutions, headquartered in Tysons Corner, VA. With a focus on end-to-end managed IT services, including managed mobility, cloud, cybersecurity, network operations, and application development, DMI supports public sector agencies and commercial enterprises around the globe. Recognized as a Top Workplace, DMI is committed to delivering secure, efficient, and cost-effective solutions that drive measurable results.

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DMI, LLCis seeking a Unix/Linux Administrator
to join our team.

As a Unix/Linux Administrator, you will play a key role in designing, implementing, and maintaining Linux-based systems for. Combining your knowledge of RHEL, cloud platforms, Oracle Linux, you will ensure our systems are stable, secure, and performant. Your responsibilities will include end-to-end management of our Linux environment and collaboration with cross-functional teams to support mission-critical applications.

• Solid understanding of networking protocols (TCP/IP, DNS, HTTP/HTTPS, VPN, etc.).
• Experience with virtualization technologies (VMware, Hyper‑V, etc.).
• Expertise in shell scripting (Bash, Python, etc.) and troubleshooting.
• Experience with version control tools like Git.
• Understanding of system security best practices and tools.
• Strong organizational skills with attention to detail.
• Demonstrated ability to complete technical projects independently.
• Strong problem‑solving skills, along with excellent written and oral communication skills.
• Install, configure, and maintain Linux‑based servers and systems (Red Hat).
• Manage system performance, monitoring, backups, and troubleshooting.
• Ensure system security by configuring to CIS recommended baselines and applying patches and updates.
• Collaborate with the other operations teams to configure environments and troubleshoot system‑related issues.
• Monitor and resolve hardware, software, and networking issues in a timely manner.
• Perform routine system upgrades, patching, and security compliance checks.
• Provide troubleshooting and technical support for escalated issues.
• Resolve incidents and tasks as assigned.
• Provide emergency response to critical outages or incidents.
• Document system configurations, procedures, and troubleshooting steps for internal use.

• Candidate must be able to meet DoD IAT Level 2 Certification requirements (Currently Security+ CE, CCNA‑Security, GSEC, or SSCP)
• Not required, but desired a Red Hat Certified Engineer (RHCE) or Linux Professional Institute Certification (LPIC‑2) and CompTIA Linux+.

Background Requirements: Must possess or be eligible to obtain and complete a Public Trust background investigation and/or a Public Trust clearance.

Citizenship Status

Required:

Must be a U.S. Citizen

Location: Washington, DC

Work Arrangement: Hybrid – Onsite support at Headquarters in Washington, DC at least 2 times per week or as needed to meet the needs of the program

DMI is a diverse, prosperous, and rewarding place to work. Our culture is shaped by five core values that guide how we work, grow, and succeed together:

• Do What’s Right
  – We lead with honesty and integrity.
• Own the Outcome
  – We take responsibility and deliver.
• Deliver for Our Customers
  – We are relentless about delivering value.
• Think Bold, Act Smart
  – We innovate with purpose.
• Win Together – We collaborate and celebrate our success.

These values aren’t just ideals—they show up in how we support every part of your well‑being:

• Convenience/Concierge
  – Virtual health visits, commuter perks, pet insurance, and entertainment discounts that make life easier.
• Development
  –…