Following a company on social media like Facebook or LinkedIn is another excellent way to keep up with their latest opportunities. You can receive notifications of any new posts or updates that the company makes so you will always be the first to know of any exciting developments.
Smaller companies may recruit directly through these platforms rather than go to the expense of putting an advert in the paper or on a larger recruitment site.
Bigger companies will use social media to advertise new and upcoming contracts and give updates on recent successes.
It's also worth following people that you know work in particular companies or sectors, as they may post comments that give you an early warning of any upcoming recruitment so you can get your CV ready well in advance!