First make sure you apply for the right job at WSO2. It is a cool place, but not an easy place. What they look at is 1. Education 2 Passion and your hunger to learn new things, 3. Culture fit. Just be your self at the interview, talk about what your interested in and what you want to do in the future. Be ready to answer questions re: what you have done, work/projects etc.
Help answer questions real people are asking about your company. Your answers will be 100% anonymous.
The person asking the question will be notified of your answer, and it will be posted publicly. Your identity will be kept private