Automated Telegram Group Welcome Software

I'm in need of a software that will be able to message people with a specific message when they join a group my accounts are members of on Telegram.

Key Requirements:
- The software should be able to automatically identify and message users who join a group. It should be based on their Telegram user IDs to ensure accuracy.
- The message that will be sent should be a combination of a welcome message with information about the group, instructions on how to get started, and a personalized message with their name.

The software should support multiple accounts up to 100 accounts and should support proxy

Once a person joins a group, first account out of my accounts will message him, and if another person join my group second account will message him automatically and after all the accounts has messaged newly joining members, it will start from first account to be messaging newly joining members in the group

Their will be a bot that will forward any message sent to any of the accounts my bot is using to message newly joined members to my account and if I should reply in the bot, the user who messaged my account will receive it as a reply too

Ideal Skills:
- Proficiency in Telegram API
- Experience in developing automation software
- Understanding of how to handle and message users within Telegram groups

Your bid for this project should include a brief overview of your experience, proposed approach to the project, and an estimated timeline for completion.