In order to be accepted into one of these jobs, you must pass a specialized exam that will test your aptitude in the subject. You can study for this exam in a number of places online, with many of these resources being completely free. Make sure that you take the time to complete this studying thoroughly if you want one of these actuarial jobs, as the exams are very difficult and will test everything that you need to be aware of before getting your job. It is actually recommended that you study for at least 300 hours before taking the test, as the number one reason for people failing this exam is not studying enough. Even those with outstanding math skills in university have been known to fail the test, as some of the issues will be completely new to many people.
Once you pass the test, you will be ready for one of the actuary jobs that you find posted, although finding a casual job might take a little bit more effort. Make sure that you include as much information about yourself as possible on your resume, including your score on the exam, as the people who will be hiring you will likely have countless resumes to go through. Anything that you can do to make yourself stand out will definitely be a good thing and you should also be sure to send your resume to as many potential employers as possible. That way, you can create a number of options for yourself and that will surely bode well for you in the future.
Remember that you will also have to pass a second exam in order to keep your actuarial jobs long term, as you must be continually learning in order to stay on top of things. This is a highly competitive career that you must be prepared to work hard at if you want to succeed, so take the time to study for your exams and get through them the first time. The longer is takes you to pass the exam, the longer you will have to wait for your job because no business will hire you until you pass the first one.