Tamara Finkelstein has been appointed as the new permanent secretary at Defra.
Finkelstein is currently working as interim permanent secretary at Defra, and was previously the deparment's director general for EU Exit.
The University of Oxford engineering graduate has previously held roles as a director of the UK Border Agency before a variety of positions at HM Treasury and the Department of Health.
Cabinet secretary Sir Mark Sidwell said: "Tamara has been appointed as the permanent secretary to continue building on the great work she is already leading at Defra. This appointment reflects not only the significant contribution she has made to the department to date, but also the knowledge and experience she brings with her from an array of other important roles in government."
Environment secretary Michael Gove added: "I am delighted Tamara has been chosen as Defra’s new permanent secretary. She is an outstanding public servant I have very much enjoyed working with.
"I know she will provide superb leadership to a great department and I am very much looking forward to working with her on our exciting agenda."
Finkelstein herself said: "I am truly thrilled to be leading Defra at this time, as we tackle the challenges and opportunities ahead to improve our environment, support our biodiversity with thriving rural communities and food, farming and fisheries sectors.
"I look forward to building on Defra’s culture of community and inclusion, and to working with permanent secretaries across government and public service leaders to deliver for government and the public together."