2 answers published. Last candidate submission on Aug 11 2026, 4:04pm PDT. Interview question asked to Software Engineers interviewing at Instamojo, GOJEK, Juul Labs and other companies. Original question asked: Explain how you monitor system performance and set up alerting thresholds.. Question last reported by a candidate interviewing at Tumblr Inc. for a Software Engineer interview on Jun 4 2026, 4:39pm PDT.