Whakakihia te rerenga e whai ake nei: Kua mahi a Kearns i nga mahi whakawhitiwhiti korero i te Manatū o te Haumarutanga (MOD), Manatū o te Ture (MoJ), me te Tari o waho me te Commonwealth (FCO). Ko ia te kaiwhakahaere matua mō te tāpaetanga a te MOD ki te
Ko te kaupapa pooti motuhake o Scotland 2014, me nga kaupapa whakawhitiwhiti korero a te kawanatanga i Hiria me Iraq mo te FCO. I te MoJ, i mahi ia hei kaitiaki korero mo te Minita mo nga Patunga. I noho a Kearns hei kaiwhakahaere ratonga kiritaki mo te kaitohutohu whakawhitiwhiti korero rautaki a Global Influence i te tau 2016. I muri mai ka noho ia hei kaitohutohu motuhake.