The tie is a standard component of men's job interview attire. Keep the tie simple. Ties with fancy patterns should be avoided. Here are the details:
Ties with dark colors are preferred. For example, dark blue ties and dark red ties.
Stick with solid colors or subtle patterns such as striped ties and dots .
Stay away from fashion extremes such as ties with pictures.
Regarding the ideal length of your tie, the tip of the wider end should be at the same level as middle your belt.