Choosing the Right Job Title for a Role with Sales, Marketing, and Business Development Skills

The title of the position that has sales, marketing, and business development capabilities. Should I use Business Development Executive, Sales Executive, Marketing Executive, or Business Development Associate? We are a company that designs and develops electronic devices.

I appreciate your thoughtful replies very much.

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