"system operator" meaning in English

{
  "etymology_text": ": system operator < → δείτε τις λέξεις system και operator",
  "forms": [
    {
      "form": "system operator"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "sysop"
    }
  ],
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Πληροφορική (αγγλικά)",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "ο χειριστής συστήματος"
      ],
      "id": "el-system_operator-en-noun-8q5RXJ3D",
      "raw_tags": [
        "πληροφορική"
      ]
    }
  ],
  "word": "system operator"
}

{
  "etymology_text": ": system operator < → δείτε τις λέξεις system και operator",
  "forms": [
    {
      "form": "system operator"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "sysop"
    }
  ],
  "senses": [
    {
      "categories": [
        "Πληροφορική (αγγλικά)"
      ],
      "glosses": [
        "ο χειριστής συστήματος"
      ],
      "raw_tags": [
        "πληροφορική"
      ]
    }
  ],
  "word": "system operator"
}