Sure lax anything is a problem. If you are placing authorized_keys files that are wide open, to a wide open SSH that just sits around for years, ya I see a problem. If done right there are restrictions that can be added in an authorized_keys file

from="IP.address" - set a key to only be able to be accessed by a certain ip
command="some command" - only allow a certain command to be run.

I also feel that ssh should not be wide open if possible. IP restricted by either a firewall, tcp wrappers or AllowUsers in sshd_config.

Are you certain you possess the job qualities the employer is looking for? I am a small business owner and have been the interviewer. A few months ago I put an ad up for a job for a person with knowledge of Linux, specifically redhat based. I got between 20 and 30 responses to the ad and constantly received resumes from people who were experts at Office, Outlook and windows based systems. Many did not even list Linux on their resume. Make sure you skill set somewhat matches with what the company is looking for.

I suggest looking into a small company - maybe check out craigslist for jobs in your area. In your free time pick up a new programming language, or get familiar with another operating system and keep learning.