The Sr. IT System Administrator is a senior technical owner within Propel IT, responsible for maintaining reliable, secure, documented, and healthy infrastructure, cloud services, endpoint platforms, identity services, and security-support processes. This hands-on role requires strong troubleshooting, disciplined change management, and clear communication with IT, Information Security, P&C, business stakeholders, and vendors. As an L3 escalation point, this person owns assigned systems and issues end to end, drives resolution, communicates proactively, and coaches junior team members through standards and practical troubleshooting guidance.