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Cloud Systems Administrator at Mantis Security Corporation

Position Cloud Systems Administrator
Posted 16 Apr 2026
Expired 16 May 2026
Company Mantis Security Corporation
Location Reston | US
Job Type Full Time

Job Description:

Latest job information from Mantis Security Corporation for the position of Cloud Systems Administrator. If the Cloud Systems Administrator vacancy in Reston matches your qualifications, please submit your latest application or CV directly through the updated Jobkos job portal.

Please note that applying for a job may not always be easy, as new candidates must meet certain qualifications and requirements set by the company. We hope the career opportunity at Mantis Security Corporation for the position of Cloud Systems Administrator below matches your qualifications.

Description

Mantis Security is a leading specialty firm of high caliber talent who specialize in Cyber Operations, Cyber Defense, Information Assurance, Software Development, DevSecOps, Security Engineering, and Cloud Engineering. We enable and protect our nation's most important IT assets and invest in the long-term career development of every employee! We are currently looking for the next Cloud Systems Administrator to join our team of experts!

Position Description

Seeking an experienced Cloud Systems Administrator to join our team supporting the U.S. Intelligence Community. Your efforts will ensure robust, reliable intelligence collection and dissemination, supporting defense intelligence, combatant commands, partner nations, and federal agencies.

Position Duties
  • Ensure optimal operation of multi-user computer systems, collaborating with network engineers and software developers.
  • Manage system resources to enhance CPU and disk efficiency and responsiveness.
  • Administer system security, setting up user accounts and profiles, and ensuring compliance with the latest standards.
  • Provide comprehensive support, from Tier 1 troubleshooting to Tier 2 problem resolution.
  • Optimize system performance, oversee software installations, and manage storage solutions.
  • Evaluate new technologies and make recommendations on hardware and software acquisitions.
  • Ensure rigorous application of security settings and conduct regular security assessments.
  • Manage Unix and Linux environments and be familiar with their configuration.
  • Proficient in scripting and setting up systems from scratch, including application installations.
  • Knowledgeable in security protocols, able to resolve vulnerabilities and run Security Technical Implementation Guides (STIGs).
Required Qualifications
  • Full time work in a SCIF is required, but hours are flexible. Must be available during core business hours and may need to work after hours and weekends as required by mission critical applications.
  • A Bachelor’s degree in an applicable field with 8+ years of relevant experience OR a Master’s degree in an applicable field with 6 years of relevant experience. An additional 4 years of experience may be considered in lieu of a degree.
  • Active TS/SCI or SCI eligibility and active polygraph or ability to obtain a polygraph.
  • Security+ or other IAT II/III level certification currently active (DoD 8570 compliance).
  • Linux (CentOS, RHEL, and/or Oracle) with strong and recent experience.
  • Experience working in an AWS environment and familiarity with console access to provision, maintain, and monitor servers.
  • Experience with snapshots, backups, disaster recovery, performance tuning, installation, STIG hardening, and patching.
  • Excellent troubleshooting skills (including scripting and audit log review) and Tier 1 communication skills.
Desired Qualifications
  • Experience developing and maintaining critical documentation (SIPs, SAGs, SUMs, SOPs, Getting started guides).
  • Experience with ElasticSearch.
  • Current polygraph.
  • Cloud (EC2s, S3, Elasticache), Kafka, Openshift, Docker, Keycloak, Wildfly proficiency.
  • PKI certificates, SSL, service accounts.
  • Maintaining multiple environment types (physical, virtual, cloud).
  • Experience supporting security audits and testing events.
  • Experience upgrading from CentOS to RHEL 8 is a nice to have but not a must as long as candidates have strong Linux experience.

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Job Info:

  • Company: Mantis Security Corporation
  • Position: Cloud Systems Administrator
  • Work Location: Reston
  • Country: US

How to Submit an Application:

After reading and understanding the criteria and minimum qualification requirements explained in the job information Cloud Systems Administrator at the office Reston above, immediately complete the job application files such as a job application letter, CV, photocopy of diploma, transcript, and other supplements as explained above. Submit via the Next Page link below.

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