How to assign node to user ?

Hi all.

I have a project where users would be assigned a node by a vote or other decision process so that the user would then have a contract to complete. Then for the completion another user would have to testify or report that the contract or service is accomplished and rate the person. My project is to help people take roles to feel however they would like to feel.

I would like to develop it with drupal 8.

What plugins and procedure should I take ?

I have thought of experimenting with views, actions, triggers, rules.

So far I have found this :

https://www.drupal.org/node/669470

https://www.drupal.org/node/537440

http://drupal.stackexchange.com/questions/31733/workflow-assign-the-node...

http://drupal.stackexchange.com/questions/45908/how-to-assign-certain-no...

Is there anyone you would think is best suited for my needs.

Thank you !