The 24-year-old has already played six matches for the Strikers as a replacement player over two seasons, after he debuted in the thrilling semi-final win over the Melbourne Renegades at Adelaide Oval in BBL|07.
As well as being clean and sharp behind the stumps, the crafty left-hander showed his batting ability with an unbeaten 44 in the club’s final match of last season against the Perth Scorchers.
SACA CEO Keith Bradshaw said that Nielsen’s signature was a priority for the coming seasons.
“Harry has already shown how good he can be with both bat and gloves and we are extremely pleased to have locked in a local lad for the next two years,” Bradshaw said.
“He has been an important member of this group since our championship season, and we know he can help us move back up the table.”
Nielsen has featured in 11 first-class matches for the West End Redbacks, and he made a century in his debut innings against Victoria at Adelaide Oval in the 2017-18 season.
He scored another 100 for a Cricket Australia XI against Virat Kohli’s India last November during a tour match at the SCG.
That outstanding performance backed up a gutsy 82 against Western Australia at Adelaide Oval in the Sheffield Shield just weeks earlier.
The Strikers begin their BBL|09 campaign away to the Sydney Thunder on Saturday, 21 December.