The title of the position that has sales, marketing, and business development capabilities

The title of the position that has sales, marketing, and business development capabilities. Should I use business development executive or sales executive or marketing executive or business development associate? We are a company that designs and develops electronic devices. I appreciate your thoughtful repllies very much.

All these match your job description. Since there is marketing and sales roles and these focus on business development and promotion you can also consider Business Promotion Officer/ Executive or Executive/ Officer (Business Promotion)