I have got two of my last three positions by asking on Twitter if anyone wants a traditionalist maths teacher. This hasn’t always worked, but if you have enough followers it might. Generally, however, Twitter is not great for finding employment because while people do tweet adverts or tweet that they are available for work, the tweets are unlikely to be seen by those they want to see them.

Source: Finding or advertising a teaching job on Twitter with #teachingvacancyuk