When an Interviewer asks you to introduce yourself, you need to have a ready script that best describes your values, ideology, professional/ career aspirations and the reasons for looking for a job change.
Keep it brief and simple. If any aspect of yourself (skills/knowledge/qualification) has a signification relation with the job on offer, impress upon that aspect.
Introduce yourself is one of the most common interview questions and a deal breaker in any interview.
Practice your introduction well before you actually walk into the interview.
Interview Tips - How To Introduce Yourself In An Interview