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Executive Desktop Linux Systems Engineer Optimisation Jobs in Maryland

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Executive Desktop Linux Systems Engineer Optimisation information

What is the difference between Executive Desktop Linux Systems Engineer Optimisation vs Desktop Linux Systems Engineer?

AspectExecutive Desktop Linux Systems Engineer OptimisationDesktop Linux Systems Engineer
CertificationsLinux certifications, advanced networking, optimization toolsLinux certifications, basic system administration
Work EnvironmentCorporate, enterprise, high-performance environmentsSmall to medium business, technical support roles
ResponsibilitiesSystem optimization, performance tuning, strategic planningSystem setup, maintenance, troubleshooting

The main difference is that the Executive Desktop Linux Systems Engineer Optimisation focuses on enhancing system performance and strategic improvements in enterprise environments, while the Desktop Linux Systems Engineer handles day-to-day system management and support. The optimization role requires advanced skills and a focus on efficiency, whereas the standard engineer emphasizes operational stability.

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Executive Desktop Linux Systems Engineer Optimisation jobs near you
Infographic showing various Executive Desktop Linux Systems Engineer Optimisation job openings in Maryland as of August 2026, with employment types broken down into 1% As Needed, 83% Full Time, 11% Part Time, 4% Contract, and 1% Nights. Highlights an 88% Physical, 2% Hybrid, and 10% Remote job distribution.

Linux Subject Matter Expert (SME)

DAn Solutions

Bethesda, MD • On-site

Full-time

Re-posted 20 days ago

Job description

Position Contingent on Funding/Award

We are seeking an experienced Linux Subject Matter Expert (SME) to provide advanced systems engineering and operational support for CDSSF Cross Domain Shared Services Framework within a secure Defense Intelligence Agency (DIA) environment. This role is embedded with our Cross Domain Solutions (CDS) team and is responsible for maintaining, hardening, troubleshooting, and optimizing Linux-based systems across multiple domains and mission enclaves.

The ideal candidate will have a deep understanding of Red Hat Enterprise Linux (RHEL), system hardening (STIG), cross domain security architectures, and the accreditation processes necessary to support Top Secret/Sensitive Compartmented Information (TS/SCI) systems.

Key Responsibilities:

  • Lead system engineering, patching, configuration, and lifecycle maintenance of RHEL/CentOS/Oracle Linux systems supporting CDS environments.
  • Implement and maintain DISA STIG-compliant baselines using automation tools (e.g., Ansible, SCAP, Puppet).
  • Collaborate with CDS engineers, Information Assurance personnel, and enclave leads to meet ATO/RMF compliance.
  • Troubleshoot kernel-level issues, performance bottlenecks, and cross-domain interface stability.
  • Provide SME-level support for SE Linux, LDAP/Kerberos, and auditing solutions (e.g., syslog, Splunk forwarders).
  • Manage OS provisioning, virtual infrastructure (e.g., VMware or KVM), and baseline image creation for cross-domain enclaves.
  • Assist with developing and maintaining infrastructure-as-code configurations and custom scripts (Bash, Python).
  • Serve as Tier III escalation for complex OS issues affecting CDS reliability or availability.
  • Support enclave isolation and guard-side interface requirements under strict security policies.
  • Document engineering decisions, operational procedures, and system configurations for cross-team knowledge sharing and accreditation packages.

Required Qualifications:

  • U.S. Citizen with active TS/SCI clearance and CI Polygraph (or ability to obtain).
  • 8+ years of experience administering Linux systems in a secure, mission-critical environment.
  • 3+ years supporting cross-domain or multi-enclave environments (CDS, Garrison, SMART.NeXT, CDSSF).
  • Advanced knowledge of RHEL 7/8/9, including system hardening and kernel-level tuning.
  • Experience with automation frameworks and scripting languages (Ansible, Bash, Python).
  • Familiarity with RMF/ATO processes and audit log management.
  • Strong understanding of networking (TCP/IP, firewalls, VLANs, DNS) as it relates to Linux systems.

Desired Qualifications:

  • DoD 8570 IAT Level II or III certification (Security+ CE, CASP+, CISSP).
  • Red Hat Certified Engineer (RHCE) or similar Linux certification.
  • Familiarity with CDS guard technologies (Radiant Mercury, Data Diode, Garrison, etc.).
  • Experience with hypervisors and virtual infrastructure supporting isolated environments.
  • Knowledge of Zero Trust, enclave segmentation, and compartmentalized architectures.

Apply