Hello,
I don't know if you are from Serbia, I would like to think so, so we could speak freelly on our native language. Anyway I could only say this about me and the work that is needed here to be done.
I am effective, hard working and have all the skills that you have listed here as required. So, if you need a person that will never let you down, a person that always learn new skills on the go, so I can help you even more as the time go on the contract, I am you man. I have 37 years and I am not a little kid that doesn't take job seriously. If you are serious with this job, and in need in admin guy, hire me so I can do the job for you and many more jobs if you need more than admin jobs.
Best,
Mladen Grozdanovic