With 3 jobs, I’d expect there to be considerable education, associations and achievements if it’ll take up two pages. A C.V. or resume generally shouldn’t exceed 2 pages (even after 10 jobs). Consider the resume as the overview, fact list…...resume, and highlight the relevant skills, training and experience briefly in your cover letter. Consider the application a taster for the employer, give them enough to want to speak to you without having to make a commitment just to read all the way through. The aim of a resume is to awake enough interest to land you an interview.