Hi,
I have gone through your job requirements and would like to show a similar site that we have developed is www.cv2jobs.com. This site is currently under overhauling process, but it works on same functionality what you are looking for.
So we can comfortably provide you what you have mentioned here and more depending on your needs.
To finalize the quote I would like to see existing theme and don't you need features like payments for chargeable offers, internal communication set-up between employers and job seekers? Please confirm.
Also a native mobile app development for your site would not fit in this budget. But we can provide you mobile interface version of the site.
Let me know, if you are interested to work with us.
We are widely certified and trustworthy company with over 10 years of professional experience in web development services. We have nearly perfect project completion ratio, here at freelancer.com.
Please check our past work details and client's reviews for references.
I am looking forward to hearing from you.
Have a great day!