1 answer published. Last candidate submission on Apr 28 2026, 11:13pm PDT. Interview question asked to Technical Program Managers, Software Engineers, Production Engineering Managers and other roles interviewing at Q2, Ninjacart, Bumble and other companies. Original question asked: Build a multi-feature messaging app like WhatsApp.. Question last reported by a candidate interviewing at Compass for a ML Engineering Manager interview on Jul 26 2026, 1:49pm PDT.