I worked there as a Java developer. Here is my interview experience . It mostly consists of 3 round. All these rounds were face to face. Round1: This round was to check my coding skills and language knowledge. It consists of questions like basic oops concepts. Give an example of abstraction and do a small implementation. Some basic algorithm related questions like how to reverse string . Round2: It was directly with a senior manager. He basically checked my puzzle and mathematical skills. There are 30+ puzzles on geeksforgeeks which is sufficient to crack this round. Round3: It was a HR round. No need to be worried if your first 2 rounds are done well. This one is just about you basic HR questions and salary negotiation. Overall It was a very easy interview process. Dassault employees are very friendly. Your basic preparation will also help you to land into this job.