Because of the industry I work in I frequently find myself looking for work. The usual scanarios are either they need a website and I have a job until it is done, get hired for SEO and as soon as they hit the front page things start happening that make the job untenable or they just hire you freelance and when the project is done it is over and you are looking for work again. Same is true with video production.
The secret to SEO is there is no secret. Google tells you exactly what you have to do.