meaning of the bold part

English as a Second Language English Vocabulary, Grammar and Idioms
1

I don’t understand the meaning of the bold part of the sentence:

The CV can, however, also be useful if you want to write to employers letting them know that you’re available should a suitable vacancy arise.

I’m also confused with missing verb after ‘should’. Is it grammatically correct?

Thanks in advance!

2

The sentence is grammatically correct. No verb is needed after should in this context. You can use a part of the CV to your employers to let any possible employers know that you would be able to start work immediately if a position was to become available.