Does name + "boss" mean something?

Perhaps you colleague is using this...

baas noun
South Africa, from Afrikaans, from Dutch
: BOSS, MASTER —used especially by nonwhites when speaking to or about Europeans in positions of authority
Merriam-Webster

It's in replacement of the words "man" "bro" "buddy" "pal" "friend" or just a casual way to address another man. Stems from a more slang use of the word boss instead of badass or similar word so has transitioned from a compliment to quite a casual every day name.

He simply means hello armen my friend or something similar.

Semi-related as well is the use of "boss" as way to indicate mastery. As a low-hanging fruit, consider show "Cake Boss". It has nothing to do with literally being a manager of cakes (although I suppose the people in the show do that too after a fashion), but instead it means the 'stars' of Cake Boss have mastered the ins and outs of baking cakes.

In the American South: Boss(term of endearment "mostly" but can be used to open an insulting statement.) = a big, large and or overweight man/boy.

https://www.youtube.com/watch?v=9V0YmVzrFNU

I am British and I sometimes call people "boss" in a very informal way, e.g. "Cheers, boss!" as an alternative to "Thanks, mate!" Thinking about situations where I would say that, it does tend to be with someone I don't know very well, like a shop employee, and most often when they have been useful or helpful. A typical conversation might be:

"Can you tell me where the baked beans are?"

"Certainly, they're on aisle 22, past the tinned tomatoes."

"Cheers, boss"

Hence, it would appear that there is a tiny amount of deference involved in how I use the word, plus I feel that it would make the person providing the information feel that I had treated him as an equal, rather than adopting a customer/server relationship.

I haven't come across anyone saying "#insert name# boss", but I can certainly imagine it happening in a jokey, light-hearted atmosphere.

The use of "boss" in addressing someone has fallen from use in the US. It is used when discussing one's supervisor/employer/business superior, "Jim is my boss." This is probably due, in large part, to the general use of first names in most business contexts.

I have heard the use of "boss" among people from India.