Not too hard. They asked much about the technical questions such as What difference between Search and Social? or Do you like Search and why? Just prepare about technical and be yourself. talk to them what are you looking for in the new job.

Relatively simple one round interview as it is a junior-level role, mainly to learn more about your experience and assess if your skillsets are relevant. No prior experience required generally, you just need to have enough critical thinking to highlight the transferable aspects and skillsets of your past employments/internships.