Its just one meet up after applying, you just have to go through several questions, its around 20-30 minutes, describing what you have (your interpersonal and intrapersonal skills), your objective from applying, your knowledge about the position (beside your major), your experience and then technical questions related to what you have described aboit your knowledge and experience (for eg. You say you know about database, youre asked about SQL and what softwares have you used and detailed questions)