We are seeking a skilled and detail-oriented Systems Administrator to support and maintain enterprise Windows and Linux server environments in a fast-paced, mission-focused organization. This role is responsible for building, configuring, securing, and monitoring systems across virtual and physical infrastructures, while ensuring compliance with security and accreditation requirements. The ideal candidate brings strong technical expertise, a proactive troubleshooting mindset, and the ability to clearly document and communicate system configurations and procedures for shared team success.