Former Northern Territory chief minister Adam Giles has landed a job with the pastoral arm of mining billionaire Gina Rinehart's company, five months after being swept from office.

Hancock Prospecting announced the appointment of Mr Giles as General Manager of External Affairs for Pastoral on Wednesday.

Mr Giles said he has always held Mrs Rinehart, Australia's richest woman, "in the highest regard".

Former Northern Territory chief minister Adam Giles has landed a job with the pastoral arm of mining billionaire Gina Rinehart's company Alex Ellinghausen

"(I) look forward to working with her in supporting her dynamic pastoral interests that are set to make a significant contribution to the development of Northern Australia, something I share Mrs Rinehart's passion for," Mr Giles said.

The Country Liberals leader lost his seat when his party suffered a crushing defeat at the August election and has kept a low profile since.