H, i'd like to know how to add the hr.job field from hr.employee to project.issue kanban view.

I tried this in the model.py

class hr_employee(models.Model):
    _inherit = "hr.employee"
    job_id = fields.Many2one('hr.job', 'Job title')

but when defining the field in the view

<field name="job_id"/> 

 I get  

"Error details:
Field `job_id` does not exist"

I created an inherited view of the original issue kanban view

<field name="inherit_id" ref="project_issue.project_issue_kanban_view"/> 

Where else should it be defined or what exactly am I missing here?
Help appreciated.