{
    _id: MongoDB.Id,
    name: string,
    ssn: string,
    email: string,
    password: string,
    role: string,
    username: string,
    availability: [ // Array med object nedan.
        {
        from_date: MongoDB.Date,
        to_date: MongoDB.Date
        }
    ]
    competence: [ // Array med object nedan.
        {
        name: string,
        years_of_experience: int
        }
    ],
    status: string,
    application_date: MongoDB.Date
}