Unix/Linux Administrator

DMI; Washington (District of Columbia); Hybrid; USD 109,440 - 133,760; Full time

Benefits offered by this job

Healthcare coverage

401(k) match

Tuition assistance

Paid time off

Job summary

DMI is seeking a Unix/Linux Administrator to join our Washington, DC team. You will design, implement, and maintain Linux-based systems with a focus on stability, security, and performance.

Responsibilities include end-to-end Linux management, CIS baseline configuration, and cross-functional collaboration to support mission-critical applications. The role requires DoD IAT Level 2 certification readiness and candidates may pursue RHCE/LPIC-2 and CompTIA Linux+ certifications.

Qualifications

• DoD IAT Level 2 certification or equivalent is required.
• RHCE/LPIC-2 and CompTIA Linux+ certifications are highly desired.

Responsibilities

• Design, implement, and maintain Linux-based systems and environments.
• Manage end-to-end Linux operations including performance, backups, and security.
• Configure CIS baselines and apply patches to systems.
• Collaborate with cross-functional teams to support mission-critical apps.
• Troubleshoot hardware, software, and network issues promptly.
• Document configurations, procedures, and troubleshooting steps.

Skills

Linux administration

Bash scripting

Python scripting

Git version control

Networking basics

Security best practices

VMware/Hyper-V basics

Education

RHCE

LPIC-2

CompTIA Linux+

Tools

Red Hat Linux

Job description

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. Learn more at www.dminc.com

About The Opportunity

DMI, LLC is 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.

Duties And Responsibilities

• 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 (RedHat).
• 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.

Qualifications

Required and Desired Skills/Certifications:

• 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

Minimum Salary Rate

$121,600

Median Salary Rate

$152,000

Working at DMI

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 – Annual performance reviews, tuition assistance, and internal career growth opportunities to help you thrive.
• Financial – Generous 401(k) matches, life and disability insurance, and financial wellness tools to support your future.
• Recognition – Annual awards, service anniversaries, referral bonuses, and peer-to-peer shoutouts that spotlight your achievements.
• Wellness – Healthcare coverage, wellness programs, flu shots, and biometric screenings to support your health.

DMI values employees for their talents and contributions, and we take pride in helping our customers achieve their goals. Because when we live our values, we all win together.

Applicants selected may be subject to a government security investigation and must meet eligibility requirements for access to classified information. US citizenship may be required for some positions.

Job ID: 2026-28860