Former player and referee Jackson will replace Mick Byrne, the new Fiji coach, for the 2025 season.
The Western Force have all but ended the NSW Waratahs' finals hopes and heaped more pressure on under-fire coach Darren Coleman with a 27-7 victory at HBF Park.
The Blues have retained top spot in the Super Rugby Pacific standings with a comprehensive 47-13 rout of New Zealand rivals the Highlanders.
The ACT Brumbies have secured a Super Rugby Pacific home play-off final after a last-minute penalty try ensured a gutsy 31-24 win over the Crusaders at GIO Stadium in Canberra.