Icon hamburger
What job do you want?
Apply to this job.
Think you're the perfect candidate?
Apply Now

You’re being taken to an external site to apply.

Enter your email below to receive job recommendations for similar positions.

Senior Linux Systems Admin

Apex Systems Linthicum Contractor
Apply Now

Apex Systems Inc., is immediately seeking a Senior Linux Systems Admin who is a self-starter, highly organized, has a strong drive for quality, and eagerness to learn/grow. This position will support an enterprise level government integrator, and offer a strong upside for growth within the organization.

Client: Enterprise Government Integrator

Location: Linthicum, MD

Compensation: Competitive based on  years of relevant experience & education

Clearance: Must be able to maintain an active DOD Secret clearance

Description of Work:

  • Design, test, and implement secure Linux (RedHat) Servers
  • Utilize compliance tools (ACAS/Nessus/SCAP) and to implement security controls. 
  • Document proper technical policies/procedures based on RMF, DCID 6/3 and ICD503 compliance requirements 
  • Patch and upgrade to remove or protect from vulnerabilities
  • Assist with continued Windows and Linux integration projects
  • Develop customized solutions to customer/user requirements. Ensure hardware and software compatibility and project computer capacity and capabilities 
  • Provide day to day support for development staff
  • Maintain and support virtualized environment using VMware
  • Support the Linux RHEL & CentOS environment
  • Work with the team and application sponsors to resolve issues that arise in the daily administration of the UNIX/Linux environment.
  • Troubleshoot and resolve problems for all applications.
  • Assist in troubleshooting and problem resolution on Linux systems – performance, health, configuration
  • Perform daily system checks, review and respond to events reflected in various management and monitoring tools
  • Conduct system audit reviews and perform maintenance functions as required to ensure system health
  • Make recommendations to purchase hardware, software, system components

Basic Qualifications:

  • Bachelor's Degree with 8+  years of experience or 12+  years of relevant work experience in lieu of degree. Degree must be in a Software Engineering, Computer Sciences, Communication, Management Information Systems, or related field.
  • Must be DOD 8570 IAT Level II Compliant
  • Certified with one of the following: RHCSA, RHCE, RHCA, RHCVA
  • Minimum of 6+  years of experience with Linux environments, to include hands on experience with RHEL v5, 6 & 7 as well as CentOS v5, 6, 7
  • Must have in-depth experience implementing/utilizing Docker
  • Experience with compliance tools such as ACAS/Nessus/SCAP
  • Hands on experience standing up/implementing new Linux servers, as well as patching and performing upgrades to remove or protect from vulnerabilities in Linux environments
  • Experience in virtualized environments utilizing VMware 
  • Understanding & some knowledge of Microsoft Windows server and desktop. 
  • Knowledge of RMF OR DIACAP, as well as achieving an ATO in an DoD environment

Preferred Qualifications:

  • Experience in larger government contracts supporting Airforce or Navy
  • Experience with Win Bind or Samba
  • Experience training junior team members
  • Any past Network Admin experience
  • Experience supporting Linux servers running Engineering functions (Mechanical, Civil, Thermal, Etc…)
  • Experience with Windows and Linux integration techniques

EEO Employer

Apex is an Equal Employment Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, age, sexual orientation, gender identity, national origin, disability, protected veteran status, or any other characteristic protected by law. Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law. If you have visited our website in search of information on employment opportunities or to apply for a position, and you require an accommodation in using our website for a search or application, please contact our Employee Services Department at 844-463-6178


Recommended skills

Red Hat Certification Programs
Red Hat Enterprise Linux
Cent Os
Troubleshooting (Problem Solving)
Apply to this job.
Think you're the perfect candidate?
Apply Now

Help us improve CareerBuilder by providing feedback about this job: Report this job

Report this Job

Once a job has been reported, we will investigate it further. If you require a response, submit your question or concern to our Trust and Site Security Team

Job ID: 944302


For your privacy and protection, when applying to a job online, never give your social security number to a prospective employer, provide credit card or bank account information, or perform any sort of monetary transaction. Learn more.

By applying to a job using CareerBuilder you are agreeing to comply with and be subject to the CareerBuilder Terms and Conditions for use of our website. To use our website, you must agree with the Terms and Conditions and both meet and comply with their provisions.


Apex Systems is a division of the 2nd largest IT staffing and services firm in North America. From consulting to staff augmentation, we connect top tech talent with great companies in all industries.


Apex earned Inavero’s Best of Staffing™ Client Diamond and Talent Awards for providing superior service to clients and job seekers, putting the company in the top 2 percent of all U.S. staffing agencies.


We take the time to understand a candidate’s talents and needs to ensure a good match with companies for contract, contract-to-hire, and direct hire positions. Each recruiter within Apex is focused on a specific skill area within infrastructure, applications, and project management. This focused discipline enables our local recruiters to work directly with our candidate’s and focus their talent on the right position at the right time.


We serve Fortune 500, mid-market, and emerging companies from a wide variety of industries, including communications, energy, financial services, government services, healthcare, technology, and utilities. 


Apex has branches in over 70 locations across the U.S. and Canada and more than 1,000 employees dedicated to supporting the needs of our clients and contract team members. Visit www.apexsystems.com to find a local branch or connect with an Account Manager or Recruiter.

View the full profile