Senior Linux Systems Administrator

Senior Linux Systems AdministratorSenior Linux Systems Administrator Aurora, CO Active TS/SCI with Poly Compensation Range: $125,000 – $145,000Company Overview: Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission. Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation's toughest and most secure problems. If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don't look any further than Cornerstone Defense.Job Responsibilities:Supporting a program in a classified environment as a Linux System Administrator.Responsibilities include building, maintaining, and securing Information Technology systems and directly supporting customer mission-critical capabilities.You will work closely with program developers and system engineers to research issues, determine root causes and implement solutions to system problems.Must be able to support occasional after hour maintenance and on-call support and must be able to lift up to 35 pounds in support of hardware installations.Occasional travel may be required for installation support. This position is an onsite role.Basic Qualifications:Typically requires a Bachelor's degree and a minimum of 5 years of prior relevant experience or a master's degree and minimum of 3 years of prior relevant experience.Active and transferable U.S. government issued TS/SCI with poly security clearance is required prior to start date. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance.Must have an active DoD 8570 IAT Level 2 certification (or higher) on start date. IAT Level 2 requires one or more of the following Professional Certifications: Security+ CE, CCNA Security, GICSP, GSEC, SSCP, CySA+, CND.Experience administering Red Hat Linux based systems with minimal support, to include patching, creating/maintaining RPM packages, performance tuning, networking, user management (LDAP), and security hardeningPreferred Qualifications:Using and developing with automation tools/frameworks such as Terraform, Ansible, and Chef as well as scripting – particularly in Bash and PythonExperience administering Windows based systemsExperience with pipeline tools such as Jenkins and ArtifactoryDemonstrated ability to work independently and troubleshoot problems with efficiencyDeployment and administration of systems in Amazon WebServices (AWS)Company Benefits: Cornerstone Defense offers a comprehensive list of benefits, designed to give employees and their families several options to choose from when selecting benefits that best fit their needs. These offerings include not only a full suite of the traditional Medical/Dental/Vision insurances, but also a number of other benefits and perks to include, but not limited to: A 401(K) plan with a company match, tuition and training assistances, paid vacation/leave, a fitness reimbursement program, college savings plan, commuter benefits, financial advisory services, flex spending accounts, health savings accounts, STD/LTD coverage, life and AD&D insurance, employee assistance programs, life financial planning assistance, and legal resources.