Nikhil worked on enhancing data quality and trace accuracy for the SigNoz observability platform, focusing on both the signoz-otel-collector and signoz repositories. He implemented an improved method for deriving the http_host attribute by leveraging net.peer.name, url.full, and http.url, which allowed for the deprecation of the confusing external_http_url field. Using Go and SQL, he also addressed a bug in trace aggregation by updating the trace_summary query to use FINAL, ensuring accurate time range calculations when multiple batches shared the same trace_id. His work demonstrated solid backend development and database management skills, with careful cross-repository coordination.