Are you sure it’s not “Zdravím překladatele”? That would mean “Hello, translator.”

From a friend: “I’m not sure what předladatele means – it might be predkladatel which is translator. If that’s the case, its I greet the translators.”

Hello! “Zdravím překladatele” means “I greet the translator”. (“předladatel” does not mean anything)

All above is correct. Exact translation of course depends on the context. It can be “translator” or “translators” as the number cannot be discerned. The definite article is not necessary, it could be as well “I greet a translator” or “I greet translators”, even if the indefinite version is not much probable.

I would be interested to know in which situation one needs to translate this sentence (and nothing more), if it isn’t a secret.

One more point: the previous comments had biased me into thinking that “předladatele” is a corrupted form of “překladatele”. However, it can be as well corrupted version of “předkladatele”; maybe more probable to occur, given the positions of D and K on the keyboard.

“Předkladatel” is, according to slovnik.cz, translated as “submitter”. The word is used mainly together with some further specification, as
“předkladatel návrhu” = person who (officialy) submits a proposal
“předkladatel zákona” = petitioner (?) of the act, i.e. a deputy, group of deputies or the government which proposes the bill.

(? – I’m not sure about the English translation)

prase:

Given your explanation of “předkladatel zákona”, I think “sponsor” is a closer English equivalent.