What's the name for the job (position)?

How can I possibly call a person whose job is to train (not teach!) people to speak English. It’s like Question-Answer, Question-Answer. They don’t teach grammar, vocab, reading, writing. They only get people talking. I’ve been googling it for ages but nothing fits. Speaking trainer – usually refers to public speaking trainers, English speaking trainer – refers to trainers who speak English, Talking trainer – it’s like for budgies…
I guess, I’m not quite correct with my search inquiry. Thank you.