Hi there! I totally know how it feels to work at some remote ESL job where your students have a 12 hour time difference. I recently found a website called iTalki where you can do the same thing but the students come from a more diverse set of places. I'm not sure how the demand for ESL teachers is there, but I'm sure it is something people on iTalki are looking for.
I also wrote a post reviewing iTalki from a teacher's perspective, so feel free to check it out to see what my insights are!