Needed ESL Teachers in Vietnam

we're looking for full time native teachers for an international school in Hà Nội, Việt Nam
teaching time: 15-20 hour/ week
salary: 18-25$/ hour
contract: at least 7 months
free lunch
starting time: as soon as possible

Job Reference: ENGLISH TEACHER

a. Native english speakers are preferred
b. Bachelors Degree or English language teaching certificate (TESOL, TEFL, CELTA or equivalent)
c. Previous teaching experiences are preferred

17000$