Senior Systems Administrator with Security Clearance

Senior Systems Administrator Chantilly, VA *Clearance: *Active TS/SCI w/ Polygraph needed to apply * Company 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. Responsibilities: * Be able to provide support onsite, remotely, over the phone, or via email. * Develop solutions for systems & networks that support mission critical and mission essential infrastructure. * Analyze existing systems & networks and make proactive recommendations to drive change and create efficiencies. * Willing to perform minimal break - fix tasks * This position can be filled at either a level 4 or 5 based on the qualifications below. Basic Qualifications: * Active TS/SCI with Polygraph * 8 years technical experience with a bachelor's degree in an IT field; 5 years with a Master's degree, and 3 years with a PhD Degree * Experience with Windows and/or Linux Server Operating Systems * Experience with Infrastructure Re-Architecture Support * Experience with Enterprise Security Assessment Support and A&A accreditation Preferred Qualifications: * CCNA Certification * Experience with Juniper Firewalls * Knowledge of with Server Operating System MS 2019 * Knowledge of Power Shell and Basic commands * Knowledge of MS patching process using WSUS * Knowledge of Active Directory * Knowledge of RMF and A&A accreditation process