Hi,
Thanks for contacting us.
1- We don't sure about the "contact form" section do you want to focus? For example, then contact form in Contact us page. This is only a form for sending a message so it is available for all visitors without login or register.
In addition, when a user wants to add job or resume, he/she need to have an account on your website firstly and this action doesn't look like leaving a message.
2- You can on/off post job/ post resume button by going to the Customizer > Header > navigation bar> Show Post Job/ Post Resume button.
Please check it, then feedback us.
Best Regards,
NooTheme