我是否需要更改我的URL slug的创建方式?

I'm an apprentice digital marketer so I have very little knowledge of coding.

The agency that designed & developed my companies website has dropped off the face of the planet and cannot assist us.

The website uses (from what I can see) PHP, smarty and swift framework - http://www.candojobs.co.uk

Currently the URLs for a job post are displayed like this:

http://www.candojobs.co.uk/jobs/267/rq92159/project-manager-level-4

Is this harming our SEO? Could the URLs be in a better format?

If so, how can we change them? I have searched through all of the website .tpl and .php files and didn't find anything. I had a quick look at the htaccess file and I saw this:

# Recruiters
    RewriteRule ^recruiters/([0-9]+)/([A-Za-z0-9-@%]+)?$ doindex.php?page=recruiters&id=$1&companyName=$2 [QSA,L]

# News
RewriteRule ^news/([0-9]+)/([A-Za-z0-9-@%]+)?$ doindex.php?page=news&id=$1 [QSA,L]

# Jobs
RewriteRule ^jobs/([0-9]+)/([A-Za-z0-9-_]+)/([A-Za-z0-9-_]+)/?$ doindex.php?page=jobs&id=$1 [QSA,L]**

Could this have something to do with the way the URLs are handled?

If anyone has any idea about this as I confused myself just writing this it would be greatly appreciated.