Three-stage process. First round was a relaxed screening call with a recruiter covering my background and motivation for the role. Second round was with the sales team lead, focused on my experience in my current role, how I handle different client scenarios, and concrete examples of things I've delivered. Third round was a technical interview with a lead engineer and was by far the hardest stage. It went deep into APIs, authentication protocols (OAuth 2.0, SAML, SCIM), webhooks including when to use them and their pros and cons, plus a code review exercise.