Cape Town - Proteas spinner Tabraiz Shamsi will join England's Northamptonshire Steelbacks for the T20 Blast, which begins on Friday, July 7.
Shamsi, 27, has played in one Test match, five ODIs and two T20Is for the Proteas.
He plied his trade for the St Kitts and Nevis Patriots in the Caribbean Premier League (CPL) since 2015 and the Royal Challengers Bangalore in the Indian Premier League (IPL) this year.
The Johannesburg-born spinner has taken 60 wickets in T20 cricket, at a strike rate of 21.7 and an economy rate of 7.21.
Shamsi will be available for the first three games of the campaign and will then be replaced by Sri Lankan spinner Seekkuge Prasanna, who will join the squad after his national commitments.
"I'm delighted to be joining Northamptonshire Steelbacks this summer for the T20 Blast," said Shamsi on the club's website.
"I look forward to entertaining the crowds at The County Ground and contributing to wins for the team."
Steelbacks head coach David Ripley said: "We're delighted to welcome Tabraiz to our T20 Blast squad.
"He is an experienced T20 player, having played both in the CPL and IPL. He is a very effective leg spinner, something I believe crucial in modern T20 cricket."