What’s a wallah?

Wallah is a word that is followed by someone’s occupation.
For example, if you sell tea for a living you are known as a Chai wallah; if you run a shop, you are a dukaan(shop) wallah;
if you drive a taxi, you are a taxi wallah.
If you sell fruit, fruit wallah
Wallah may refer to:
• Dabbawala, lunch box deliverer
• Auto-wallah, driver of an auto rickshaw
• Chai-wallah, a boy or young man who serves tea
• Attar-wallah, seller of perfumes and extracts
• Kulfi-wallah, maker of Kulfi (Ice-cream)
• Kaan-saaf wallah, ear cleaner
• Bottley-wallah, recycler of printed material, bottles, and these days, electronic gadgets such as TVs
• Dudh-Wallah, this is a caste, an accent and applies to milkmen
• Punkawallah, The servant who keeps the punkah or fan going on hot nights
• Dhobi wallah, laundry worker.