The successful candidate must understand end-to-end network behavior and independently diagnose complex connectivity, authentication, routing, DNS, performance, and application-access issues across endpoints, enterprise networks, cloud security platforms, identity providers, and applications. This Senior Zero Trust Network Access (ZTNA) Engineer role will augment CoStar's zero-trust engineering teams, providing expertise in the architecture, implementation, operation, and continuous improvement of the company's cloud-delivered ZTNA and Security Service Edge (SSE) platforms.