The team, which will create rolling landscapes around housing for the 40ha site in Glasgow, has taken over the site as part of a consortium to build the athletes' village.
Design concepts maximise the proximity of the River Clyde and belts of green space will snake between low-rise housing and venues.
RMJM European director Paul Stellan said: "We have designed a beautiful and inspired urban village for the east end of Glasgow. It will accommodate visiting athletes but most importantly, after the games, will prove a wonderful environment for a new community."
RMJM's landscape division, Strata, is firming up hard and soft public realm elements following planning approval, granted by Glasgow City Council in September.
The village for 6,500 people will become a 1,400-home community after the games and building is due to start before the end of this year.
Developer Cruden, Mactaggart & Mickel and contractor W H Malcolm head the City Legacy Consortium for the first phase, 700 homes and green space.
That phase includes houses built around green squares surrounded by four-storey blocks. These are ringed with landscape and trees and arc around the looping river.
RMJM has won major masterplanning competitions all over the world including commissions in Abu Dhabi, Algiers and Kazakhstan.