I understand from your description that you are looking for a developer who can create an AI customer service speech bot/agent using Chatgpt, TTS, STT, ML, NLU/NLG/NLP and APIs. With my experience in Artificial Intelligence, Chatbot development, ChatGPT prompt engineering as well as Python I am confident that I can deliver a successful solution for this project.
I have worked with ChatGPT before and have experience with Chatgpt prompt engineering which will be useful for this project. My skillset includes integration with specific platforms and APIs being developed as part of the project - this should result in a standalone solution that can be easily integrated with the specified platforms and APIs.
I am also experienced in frontend and backend web development with ReactJS, NodeJS, Vue.js, AngularJS, TypeScript, HTML5 & CSS3. This makes me well-suited to work on an API project like this one since it requires integration with specific platforms and APIs being developed.