When the acronym DOE appears on a job posting, it stands for "depending on experience" and indicates that there's a salary range for the position, with the exact salary depending on the experience level of the candidate. According to The Ladders, those with more work experience in their field typically earn higher salaries than those who have less experience, and they also experience a shorter time to hire with more experience.
Getting a salary offer on the low end of a position's salary range is common for entry-level professionals, such as college graduates. Since these people may have little work experience in their field, they should show prospective employers any internship or part-time job experience they have and also emphasize the skills they possess related to the job description. Doing so may help increase the starting pay.