I disagree with this answer.
Or should I just trust the online system and hope that my application won't be filtered out?
As much as you like to think organizations "must have stuff working" - if you really want a job are you willing to gamble based on this?
I have been astounded on the number of organizations which have online forms/applications/submissions which "should work" but result in all sorts of problems. Maybe the system works but gets overloaded. Maybe the system only works certain times of the day for some reason. Maybe the system is just buggy from your ISP. Who knows.
A key point from the question is the listing of contact information. Why put that there? So people can contact whomever it is.
What I would recommend is a slightly different strategy for this situation:
- Email the contact with some questions about the job (you do have questions, right?) which can be answered (yet are not in the article!) and are meaningful questions.
- Dialogue briefly with this person. Make sure to make your interest and intent to apply known.
- Actually apply online.
- After a short while, reply to the contact, "Hey just wanted to let you know I've applied - can you confirm you received my application?"
This not only gives you confirmation you have applied successfully but also gives you some bonus networking points with the contact person, because it shows you have serious interest in the position and are willing to research it before just dropping an application off.