Returns every submitted review of this employee, newest first, across every cycle they were enrolled in — so the most recent review is the first element and needs no client-side sorting.

Reviews of a deactivated or terminated employee are included.

{
  "data": {
    "review_completions": [
      {
        "submitted_at": "2026-03-14T18:22:05Z"
      }
    ]
  }
}