New Twiddle

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
});

routes.application.js

import Ember from 'ember';

export default Ember.Route.extend({
  model() {
    return {
      "employee": [{
        "id": "1001",
        "name": "Employee1",
        "address": {
          "Street": "25 West Street",
          "city": "City1",
          "state": "State1",
          "Country": "US"
        }
      },{
        "id": "1002",
        "name": "Employee2",
        "address": {
          "Street": "52 East Street",
          "city": "City2",
          "state": "State2",
          "Country": "US"
        }
      }]
    };
  }
});

templates.application.hbs

{{#each model.employee as |employee|}}
  <ul>
    <li>id: {{employee.id}}</li>
    <li>name: {{employee.name}}</li>
    <li>address:
      <ul>
        {{#each-in employee.address as |key value|}}
          <li>{{key}}: {{value}}</li>
        {{/each-in}}
      </ul>
    </li>
  </ul>
{{/each}}

twiddle.json

{
  "version": "0.11.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.11.0",
    "ember-data": "2.11.0",
    "ember-template-compiler": "2.11.0",
    "ember-testing": "2.11.0"
  },
  "addons": {}
}