The 40-year-old, who represented South Africa at the Under-19 World Cup in 2002, replaces Ben Smith, who left the county in October to pursue other opportunities
Former Essex allrounder Greg Smith is Northamptonshire's new batting coach.
The 40-year-old, who represented South Africa at the Under-19 World Cup in 2002, replaces Ben Smith, who left the county in October to pursue other opportunities.
As well as four seasons at Chelmsford, Smith spent 11 years at Derbyshire.
"I'm really looking forward to this new challenge and for the chance to work with such a talented bunch of cricketers and staff," he said.
"I hope my enthusiasm and knowledge will bring the best out of the players and bring the results the fans want."
Chris Tremain has also arrived for the start of next season (Getty Images)
John Sadler, Northamptonshire's head coach, added that Smith has already begun working with the club's batters, with Ricardo Vasconcelos, Emilio Gay, Rob Keogh and new signing George Bartlett among those at his disposal.
"We have a very exciting group of batters who, as a unit, were under-par last year," said Sadler. "With the additions we've made to the squad, competition for places is very strong and I'm sure Greg work closely with everyone and get the best out of them."
Chris Tremain, the Australian seamer, has re-signed for the club's first four County Championship matches of next season.