I suppose that this would depend on precisely what "certification" your employer is referring to... to my knowledge there is no such certification recognized by any recognized authority in the USA.
There are some plaques awarded by the SCAE (specialty coffee association of Europe) for mastery in certain areas, but as of yet, one has not been implemented here by the SCAA. (well, actually it was, but was later discontinued due to a very lengthy story) I believe that there are also courses offered in Australia by the AASCA.
We've discussed eventually bringing back such a monster with the SCAA, but there is much more content that needs to be developed, so it will probably be a while.
I suggest that you focus on the results that any training program or private instruction you consider rather than the paper on your wall. Ultimately, the only proof of your skill will be in the cup.
Andrew