Native english teacher job

Hi there!
We're Aula Intercultural, and we're looking for a substitute teacher to work in the Peu del Funicular area in Barcelona during this week and maybe the next one. 
The classes are at the Consejo General del Poder Judicial, from Monday to Thursday. The students are judges, ages between 25 – 34 years old.
There are two groups: 
Mondays and Wednesdays from 3:00 to 5:00pm ( Group 1, for example)
Tuesdays and Thursdays from 3:30 to 5:30pm ( Group 2)
Gross salary: 16 euros per hour