I'm a graduate with some years of occasional programming experience (no professional experience besides an internship). The company in question is looking for an entry level developer and does not specify how many years of experience the position requires (although I believe entry level is 0 - 3 years). I have some of those skills but all (to further clarify this is not an ad that require knowledge of most languages and frameworks like some are). Since I don't really know if I'm qualified, can I email the poster asking if I can apply for said position given my skills and position? I'm not sure what the correct etiquette is here with linkedin.