Hiring online tutors

We are hiring online tutors for our company (one on one tutoring services).
Subject to teach:
-English
-Math
-Physics
-Chemistry
-Biology

Familiar with the UK and US curriculum and the exams GSCE, A-level and SAT.
Make own course ware (ppt lesson material)

Can be part time and full time.
Preferably: with standard English accent and teaching experience