This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Principal National Support Engineer II based in the United States. This is a senior Tier 3 technical support role responsible for resolving the most complex and business-critical issues across medical imaging and healthcare IT solutions. You will serve as a technical escalation leader, partnering closely with development, technical support, project engineering, upgrade teams, international partners, and customers. The role combines deep hands-on troubleshooting with technical leadership, knowledge sharing, documentation, and mentoring. You will take ownership of high-priority incidents from escalation through resolution while ensuring an exceptional customer experience. You will also influence product releases, support processes, technical training, and improvements to internal tools and practices. The position offers a remote work environment with opportunities to collaborate across a broad, global healthcare technology organization. Because critical customer systems require continuous coverage, participation in an after-hours and 24/7 on-call rotation is an essential part of the role.