Define/Create a DFD with as many levels as required for a typical Online Job Portal system: Connecting Jobseekers with Employers.

It should also include:

CV/Video Resume upload;

Create a profile

An active feed where active users signed up can view, add, comment posts/opinions(i.e a means to share ideas);

A rating system, where employees are "rated" by employers who they have worked for and vice versa; This is to improve chances of Blue collar workers.

Option for active chat( a sort of messaging app) for employers with prospective job seekers;

Option for employers to schedule live video interview with job seekers;

Active feeback system for jobseekers, so they always notified on every step of application/ job search;

Admin runs background check on any user seeking to register with the portal. Admin also verifies Ratings to be sure the reasons are legit.

Every other assumptions made should be noted too.

Thanks.