System Administrator

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 System Administrator to join our team of experts!What you'll be doing:Maintains smooth operation of multi-user computer systems, including coordination with network engineers.Monitors and manages system resources, including CPU usage, disk usage, and response times to maintain operating efficiency.Performs systems security administration functions, including creating user profiles and accounts.Provides Tier 1 and Tier 2 problem identification, diagnosis and resolution of problems. Provision/harden Linux operating systems.Other duties may include setting up administrator accounts, maintaining system documentation, tuning system performance, installing system wide software and allocating mass storage space. Interacts with users and evaluates vendor products. Makes recommendations to purchase hardware and software, coordinates installation and provides backup recovery. Develops and monitors policies and standards for allocation related to the use of computing resources. Must have familiarization with scripting and installing applications from root files. Working knowledge of reviewing of security scans, applying fixes to resolve noted deficiencies and ability to work with and run STIGs via a viewer or other automated tools.Need to Have:Full time work in a SCIF is required, but hours are flexible.Requires Bachelor's degree in related field of study with 8 or more years of experience. Additional experience may be considered in lieu of degree.Must have TS/SCI.Security+ or other IAT II/III level certification that is currently active.Linux (CentOS, RHEL, and/or Oracle). This position requires strong Linux skills with current/very recent experience, to include experience with Linux OS upgrades in a cloud environment.Experience working in an AWS environment and familiarity with console accesses to provision, maintain and monitor servers.Performing snapshots, disaster recovery, performance tuning.Installation, STIG hardening, patching.Excellent troubleshooting skills and Tier 1 communication skills.Experience developing and maintaining critical documentation (SIPs, SAGs, SOPs, Getting started guides).Nice to Have:Experience working with Agile scrum teams.Experience with ElasticSearch.Cloud (EC2s, S3, Elasticache), Kafka, Openshift, Docker, Keycloak, Wildfly.PKI certificates, SSL, service accounts.Maintaining multiple environment types (physical, virtual, cloud).Experience supporting security audits and testing events.Education/Experience:Bachelor's degree in computer science, software engineering or field applicable to the position required.10 or more years of relevant experience required. Additional experience may be considered in lieu of degree.We believe that our strength is in our employees. We offer employees the chance to work with great people on projects of high importance and are committed to providing the best culture that fosters technical innovation and personal growth. To help our staff achieve a productive work-life balance, we offer a full range of highly competitive benefits for our employees and their families. For more information visit our website at

https://www.mantissecurity.com

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