As a seasoned full-stack developer with over a decade of experience, I am confident that I possess the skills and expertise you need to develop your Python Telegram bot. I have a strong command of Python and have built numerous bots integrated with external APIs in my career, making me well-suited to handle auto-reply messages and create a smooth user registration and authentication system for your bot. My extensive experience with MySQL database will ensure an efficient broadcast systems.
During my career, I have been involved in the development of various complex projects for big companies where efficient data handling was crucial. This has granted me both skill and familiarity with multi-broadcast systems - exactly what you are looking for. With me on board, you can rest assured that your bot would be up to par with your expectations due to my deep understanding of SQL and how to integrate different databases efficiently for tasks like broadcasting.
To wrap it up, I bring not only the requisite technical skills, but also a commitment to deliver excellent quality within the stipulated timeframe that I am known for. In view of this, hiring me would guarantee a robust, well-structured, database-focused Python Telegram bot that excels in its core functionalities while still being user-friendly. Let's connect and discuss further on how we can bring your project to fruition!