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Sr. Linux Systems Administrator

Job Type: CTH

Job ID: 10952

Sr. Linux Systems Administrator, Rockville, MD

Our client is seeking a Sr. Linux Systems Administrator for a contract-to-hire opportunity in Rockville, MD.

Job Description

This contract provides a full range of infrastructure support to a federal agency including server architecture design & maintenance, application hosting and administration, providing fixes & upgrade patches, and ensuring cyber security compliance protections.


  • Work hands-on creating, maintaining, and decommissioning servers running CentOS and Red Hat Enterprise Linux in multi-tiered federal agency on-premises and cloud environments
  • Analyze the effect of OS patching on server contents/functionality and perform scheduled patching in concert with applications team and system owners
  • Advanced experience working with web and application servers including Apache, Tomcat, Jboss, Wildfire, Coldfusion, and Content Management Systems like Drupal
  • Exposure to server and application deployment automation systems like Jenkins, Puppet, Docker, Ansible, Maven, and Git
  • Debugging application and server performance issues and, monitoring servers along with resident applications and providing/implementing solutions
  • AWS GovCloud environment-specific responsibilities including: architecture design, implementing load balancers, and troubleshooting EC2 Linux instances
  • Installation and configuration of enterprise development software
  • Hardening of server environments to agency, DHS, and/or DoD STIG guidelines including working with SSL, DNS, and cyphers issues
  • Communicate with infrastructure, security, and agency leadership about work that is active, completed, and in backlog status
  • Analyze specific system requirements and design modifications or deviations in hardware or software subsystems to implement user requirements and ensure cyber security


  • 5+ years of systems administration experience Linux application and web servers  
  • Ability to work hands-on to install, configure & maintain Linux servers
  • Experience with Apache web server administration
  • Experience with Tomcat, Jboss, and/or Drupal application server administration
  • Understanding of server security and how it relates to applications security
  • Familiarity with Agile development SDLC and DevOps
  • Strong communication skills and a self-motivated attitude
  • Ability to work with issue tracking software and independently resolve issues
  • Experience with supporting IA/Cybersecurity tasks and security accreditation packages
  • Experience with supporting system audits
  • Experience with vulnerability detection analysis
  • Knowledge of designing and implementing countermeasures to analyze & identify security risks/vulnerabilities in Linux-based systems and integrating security mitigation policies

Desired Qualifications

  • Amazon Cloud and AWS administration
  • Experience installing/configuring Java Enterprise Edition (Java EE)
  • Knowledge and/or experience with Information Assurance Documentation such as ATOs and SSPs
  • Experience with supporting STIGs and creating STIG-compliant server environments
  • Professional experience working in an enterprise data center environment with load-balanced, multi-tiered application infrastructures


  • Undergraduate Degree (Preferred) or Equivalent
  • One or more of the following certifications desired:
  • Red Hat Certified System Administrator (RHCSA)
  • Red Hat Certified Engineer (RHCE)
  • ITIL Foundations certification

Please Note

  • Only those individuals selected for an interview will be contacted.
  • No calls, inquiries, or Third Party Vendors please.
  • We are an equal opportunity employer (Unable to sponsor H1B Visas).

Since 1988, The ACI Group, a Baltimore-based IT staffing firm, has been committed to hiring the industry’s leading professionals, and presenting exciting career opportunities. We have access to varied types of contract, permanent and contract-to-perm positions and offer a choice of employment options including a full benefits package.

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