Need Engineer to do a small tracking device with help button to speak directly to app

How are you ? My name is Bryan Valencia. I am full stack developer and have great experience for 5+ years. Also, I have a passion for working on project and I am faithful. I am fully committed to producing quality results and delivering unique content that makes you stand out from your competitors. I am ready to start the project. Please contact me for discussing in detail. Regards. Bryan.

Dear, I am Gang Lee, Mobile developer in China. I've just read your job posting and I'm very interested. I'm a certificated freelancer with almost 900 good reviews from clients. I have experienced knowledge in every part of mobile technology. I know how to bring your idea alive and communication well. I never disappoint my clients and I'm able to lead your project to success and troubleshoot problems. I am sure these will reflect in my past results. Please contact me if I am a match for you are looking for. Best Regards, Gang Lee