The 26-year-old jointly owns a 105 hectare farm with his parents at Muriwai, where he rears 700 beef calves. They lease a further 280 hectares.
Dangen's sister Emma is competing in the Waikato/Bay of Plenty regional final.
Contestants in the Northern event will tackle a series of gruelling challenges at the Warkworth A&P Showgrounds.
It will be followed by a dinner and fast-paced agri-knowledge quiz hosted by Te Radar at the Warkworth Town Hall.
The other finalists are Brant Julian, James Robertson, Brody Goodmon, George Watson, Daniel Richards and Jack Bellamy.
James Robertson also works in Auckland. The 22-year-old is a business graduate in Fonterra's venture capital team.
"Making the FMG Young Farmer of the Year Grand Final has always been an aspiration of mine," said Robertson, who grew up on a dairy farm near Hamilton.
Brant Julian, 25, is second-in-charge on a 500 cow dairy farm at Te Kopuru near Dargaville.
He helped run one of Australia's top-producing dairy herds, Invergelly Jerseys.
"It was an amazing experience. The property had 600 cows calving year-round," said the Northern Wairoa Young Farmers' member.