Senior Systems Administrator

Job Description Job Description Job Title: Senior Systems Administrator Department: IT / Engineering Reports To: RSekure Program Manager Location: Chantilly, VA Schedule: Monday – Friday Hours: Full-time, 40-hours/week Clearance Req: TS/SCI – Full-Scope Polygraph Position Summary RSekure is seeking a highly skilled Senior Systems Administrator to manage and maintain Linux and Windows environments in a mixed-OS infrastructure supporting a high-performance, commercial web-based platform. The role requires hands-on expertise with AWS, Linux (Red Hat/Rocky), Windows Service environments, and PostgreSQL, plus strong scripting and automation skills. This position partners with developers, end users, and management to ensure systems are secure, stable, and scalable, while elevating automation, security, and uptime across production times. Essential Duties and Responsibilities Administer and maintain Red Hat/Rocky Linux systems, including updates, patching, system hardening, and configuration....