Discord Welcome Bot Automation

I need a small Discord bot whose sole job is to greet every new member as soon as they join. The greeting must be posted automatically in a channel I specify—no DMs, no public tag, just a clean welcome message that appears in the chosen channel the moment the user arrives... (Budget: ₹400 - ₹750 INR, Jobs: API Development, Automation, Bot Development, Discord API, Git, JavaScript, Node.js, Python, Software Architecture, Software Development)