A top figure in Austin’s massive rewrite of its land development code, planning manager Jim Robertson, is leaving City Hall to take a job in Colorado, city officials announced Monday.

“He will be missed as the leader of this important project, but we are very fortunate to have created a talented team of colleagues within (Planning and Zoning) and spread across the other City’s departments to carry this effort forward,” wrote Greg Guernsey, who heads the Planning and Development Review Department.

Robertson will leave the city in August to take a top planning job with the city of Boulder.

The city has not yet said who will take the reins on CodeNEXT, the city code overhaul that is more than a year late and projected to be at least $1 million over the original budget. The announcement of Robertson’s departure comes a month after the overall head of the project, former city planner Matt Lewis, resigned in the aftermath of a city investigation that found he mistreated his staff.