Possible Clues:

• Designer about to get into new role, having more work?
• Swiss-born French architect and urban planner — I bore ulcers (anag)
• Architect caught in tricky role with more work to do
• French architect, born in Switzerland (1887-1965)
• Swiss-French architect
• Machine-designer's constant role changes, given more work
• 20th century architect
• Round city, peer shortly having more work for architect
• Twentieth century Swiss architect
• Architect left city, otherwise given more employment