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 Senior Linux/Unix Systems Engineer to support the Federal Trade Commission. You are the senior technical authority for the agency’s Linux platform. You will design, engineer, and modernize the RHEL and Oracle Linux environment that hosts FTC mission applications, set the standards the rest of the team builds to, and serve as the final escalation point when an issue exceeds Tier 1 and Tier 2 support.

This is a hands‑on engineering role with design ownership: you will contribute to how the platform is built, hardened, automated, and recovered, and you will mentor the administrators who operate it day to day.

Duties and Responsibilities:

• Engineering and Design
  • Own engineering and architecture decisions for the FTC RHEL and Oracle Linux estate, including server builds, golden images, and platform standards.
  • Design and maintain the enterprise patch and configuration management architecture (Red Hat Satellite, Ansible or Ansible Automation Platform), converting manual administrative work into automated, repeatable, version‑controlled workflows.
  • Lead operating system lifecycle and major version migration engineering, including RHEL 7/8/9 upgrade paths, Oracle Linux, and on‑premises to cloud migration, with planning, risk assessment, rollback design, and execution.
  • Author and maintain security hardening baselines aligned to CIS Benchmarks and applicable DISA STIGs; own vulnerability scan remediation and support FISMA and NIST SP 800‑53 control implementation, POA&M closure, and audit evidence.
  • Perform performance engineering and capacity planning, including trend analysis, right‑sizing recommendations, and proactive remediation of systemic conditions rather than recurring symptoms.
  • Engineer high availability, backup, and disaster recovery solutions and validate them through scheduled testing.
• Technical Leadership
  • Serve as the senior escalation point for Linux platform incidents, lead technical bridge calls during critical outages, and author formal root cause analyses with corrective actions.
  • Mentor junior and mid‑level administrators and conduct peer review of scripts, configurations, and change records.
  • Represent the Linux platform in change control, architecture review, and technical planning forums, and brief technical recommendations to government stakeholders.
  • Produce engineering design documentation, as‑built records, and standard operating procedures.
• Operations and Sustainment
  • 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 other operations teams to configure environments and troubleshoot system‑related issues.
  • Monitor and resolve hardware, software, and networking issues in a timely manner.
  • Perform system upgrades, patching, and security compliance checks.
  • Resolve incidents and assigned tasks, and provide emergency response to critical outages.
  • Document system configurations, procedures, and troubleshooting steps.

Education and Years of

Experience:

• Bachelor’s degree in computer science, information systems, engineering, or a related technical…