I have decide to apply for a job as trannie game tester in Ubisoft, Pune. But I heared that video game tester have very damn job what to do?

Omkar, that is not much of a job. Better learn game design if you like that. I'd be happy to understand your current stage of progress including academics, courses, hobbies and other interests to help you understand what in you can lead to game design and also what aspect of game design can suit you