db.jobs.find().limit(1).pretty()
{
    "_id" : ObjectId("54a457410e000031008277d3"),
    "data" : {
        "first_name" : "Test",
        "last_name" : "User2014-12-31T22:06:22.702+02:00",
        "location" : {
            "street1" : "123 Queen Street",
            "town" : "Manchester",
            "zip" : "m2 123",
            "country_code" : "gb",
            "street2" : "Apartment 203"
        }
    }
}
> db.jobs.find({"data.first_name": "Test"}).limit(1)
{ "_id" : ObjectId("54a457410e000031008277d3"), "data" : { "first_name" : "Test", "last_name" : "User2014-12-31T22:06:22.702+02:00", "birthdate" : ISODate("1985-10-30T21:00:00Z"), "location" : { "street1" : "76 Queen Street", "town" : "Manchester", "zip" : "m2 123", "country_code" : "gb", "street2" : "Apartment 203" } } }
> db.jobs.find({"data.location.street": "76 Queen Street"})