Unix/Linux Administrator

careers-dminc; Washington (District of Columbia); Hybrid; USD 122,000 - 152,000; Full time

Benefits offered by this job

Virtual health visits

Commuter benefits

Pet insurance

Entertainment discounts

401(k) matching

Life insurance

Disability insurance

Wellness programs

Job summary

DMI, LLC seeks a Unix/Linux Administrator to design, implement, and maintain Linux-based systems. You will ensure stability, security, and performance across our environment, with a focus on Red Hat Enterprise Linux, cloud platforms, and CIS baselines.

This hybrid role in Washington, DC requires collaborating with cross-functional teams to support mission-critical applications, manage monitoring and backups, and respond to incidents to keep systems running smoothly.

Qualifications

• DoD IAT Level 2 Certification required (Security+ CE, CCNA-Security, GSEC, or SSCP).
• Preferred RHCE or LPIC-2 and CompTIA Linux+.
• Must possess or be eligible to obtain Public Trust background and be a U.S. citizen.
• Location: Washington, DC; Hybrid work arrangement with onsite support at HQ at least 2 times per week.

Responsibilities

• Design, implement, and maintain Linux-based systems.
• Manage Linux environment end-to-end and ensure security and performance.
• Collaborate with cross-functional teams to support mission-critical applications.
• Monitor performance, backups, and security patching; troubleshoot issues.
• Configure CIS baselines and perform routine system upgrades and incident response.
• Document system configurations and procedures for internal use.

Skills

Networking fundamentals

Security best practices

Troubleshooting

Documentation

Cross-functional collaboration

Tools

Git

VMware

Hyper-V

Bash scripting

Python scripting

Job description

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. Learn more at www.dminc.com

About the Opportunity

DMI, LLCis seeking a Unix/Linux Administratorto 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.

DMIvalues employeesfor 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.

***************** No Agencies Please *****************

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.