1 answer published. Last candidate submission on Apr 14 2026, 1:49pm PDT. Interview question asked to Technical Program Managers, Production Engineers, Software Engineers and other roles interviewing at Rakuten, IBM, Cognizant and other companies. Original question asked: Design a system for online advertising.. Question last reported by a candidate interviewing at Unity Technologies for an Engineering Manager interview on Jun 11 2026, 4:32pm PDT.