Sample Answer
At my last role we saw p95 latency jump from 120ms to 800ms as traffic doubled to ~50k RPS. I start by gathering metrics: p50/p95/p99, error rates, GC pauses, thread pools, DB slow queries, and network stats using Prometheus/Grafana, Jaeger for traces, and flamegraphs from async-profiler. I reproduce load in staging with k6 and narrow the hotspot via distributed traces—often it's DB or sync calls. If DB is the culprit I add indexing, rewrite queries, or introduce read replicas and a 5–10% cache hit rate with Redis. If app CPU-bound, I optimize hot paths, add batching, or switch to async IO; if infra-limited, autoscale or upgrade instance types. I ship incremental changes behind feature flags, monitor 10-minute rolling windows, and roll back if p99 degrades more than 10%. Within three weeks these steps cut p99 from 1.2s to 180ms for us.
Keywords
In your civil engineering studies, what specific design coursework or project work did you complete related to irrigation channels or canals (e.g., design of lined/unlined canals, distributaries, minors)? Describe one such design in detail, including how you determined discharge, permissible velocity, section dimensions, and lining choice for Gujarat-type soil and climate conditions.
Based on your hydrology and irrigation engineering background, explain how you would estimate the irrigation water requirement for a kharif crop in a semi-arid region of Gujarat. Walk me through each step: from reference evapotranspiration estimation, crop coefficient selection, effective rainfall calculation, to arriving at canal discharge for a given command area.
Walk me through a recent multi-channel digital marketing campaign you managed end-to-end. How did you set objectives, choose channels, allocate budget, and measure success?
On your resume you mention working on a cross-functional project (e.g., involving multiple teams or stakeholders). Describe a situation from that project where priorities conflicted—how did you navigate the trade-offs and what was the final outcome?
Can you explain how you would tailor your sales approach for selling medical products in the telecommunications industry?