1-- It depends on the context. You can omit 'be' (as here) if it is not a written text but e.g. a newspaper advertisement. Since you have already omitted 'an' before MNC and capitalized 'Experience', I can only presume that this is not meant to be a full sentence, but an advertisement or similar situation.
2-- It would be wiser to use the full form...of everything: 'Work experience in