[{"_id":1,"name":"string","email":"string","password":"string","phoneNumber":"number","city":"string","myDescription":"string","specialty":{"certified":["plomero","electricista"],"inProgress":["albañil"],"nonCertified":["mecanico","veterinario"]},"image":{"profile":["string","string"],"myJobs":["string","string"]},"socialSecurity":{"eps":"string","arl":"string"},"availability":{"schedule":"string","fullAvailability":false}}]

db.collection.find({"specialty.certified":"plomero"})