Airport Baggage Trolly design. -- 2

I am looking for an experienced engineer to design an airport baggage trolley. This trolley must be made from resilient metals and must include the option of seating. The cart should have a weight capacity of between 400-800 pounds. If you have the expertise and qualifications to deliver results that meet both safety and practicality standards, then I’d like to hear from you. Please get in touch with your portfolio and outlining the experience you have with previous projects.