"These actions are not compatible with the mission we joined the United States Digital Service to carry out: to deliver better services to the American people through technology and design."

The mass resignation of engineers, data scientists and product managers is a temporary setback for Musk and the Republican president’s tech-driven purge of the federal workforce. It comes amid a flurry of court challenges that have sought to stall, stop or unwind their efforts to fire or coerce thousands of government workers out of jobs.

The joint resignation letter was addressed to White House chief of staff Susie Wiles and uploaded to a webpage called WetheBuilders.org.