Rails ActiveJob Start From Controller

I have some custom code that calls some backend systems and updates the database remotely. I have an ActiveJob that performs the task:

## Runs join code
class DataJoin < ApplicationJob
  queue_as :default

  def perform
    join = Joiner.new
    join.run
    NotifMailer.sample_email.deliver_now
  end
end

I want to kick off an ActiveJob manually from a controller/view:

class AdminController < ApplicationController
  before_action :verify_is_admin

  private def verify_is_admin
      (current_user.nil?) ? redirect_to(root_path) : (redirect_to(root_path) unless current_user.admin?)
  end

  def index
    @username = current_user.name
    @intro = "Welcome to the admin console"
  end

  def join
   ## Code to start ActiveJob DataJoin??
  end
end

How can I kick off an ActiveJob from a controller?