e.Gen Ventures interview questions

Human resource manager contacted me for an interview. I did not apply for the job, I was not looking for a new job. He discovered me on linkedin and invited me to talk about a new project. When I arrived, he guided me to a room with 2 technical guys that bombarded me with very technical questions, in portuguese and english. No one told me about a technical interview. No salary was even brought to the interview. No conditions were discussed. Just technical and more technical questions.