curl --request GET \
  --url https://app.arxena.com/people-api/taxonomy/tree

const options = {method: 'GET'};

fetch('https://app.arxena.com/people-api/taxonomy/tree', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://app.arxena.com/people-api/taxonomy/tree"

response = requests.get(url)

print(response.text)

{
  "status": "ok",
  "gradeLevels": [
    {
      "id": "leadership",
      "label": "Leadership",
      "description": "Senior leaders and heads of function."
    }
  ],
  "functionRoots": [
    {
      "id": "engineering",
      "label": "engineering",
      "functions": [
        {
          "id": "software engineering",
          "label": "software engineering"
        }
      ]
    }
  ]
}