Are you searching for a job?

I only had one job and this job I began after finishing my school. During the last year at school I wrote an application and my curriculum vitae and send it to the firm. A few weeks later I have been invited to a job interview and a test for employment. I had luck. Some weeks later I got the information that they want to hire me and we made a date for signing the contract.

Hello there - your piece is really very well written. There are a few corrections. 

I have only had one job since I finished school. During my last year at school, I compiled my curriculum vitae and applied to a firm for a job. A few weeks later they invited me for a job interview and an aptitude test. I had luck, Some weeks later I was informed that they wanted to hire me and we made a date to sign the contract.

I only had one job and I started this job after finishing my school. During the last year at school I wrote an application and my curriculum vitae and send them to the firm. A few weeks later I was invited to a job interview and a test. for employment. I was lucky. Some weeks later I got the information that they wanted to hire me and we made a date for signing the contract.

Very good writing! I have tried to keep your writing style and just correct the errors.

One comment on a rather subtle point:

I only had one job - is correct only if the job has finished

I have only had one job - is correct either if the job has finished or not