During April 2025, Lukasz enhanced the nobl9/nobl9-go repository by implementing millisecond-precision timestamp support for OpenTelemetry span queries in Elasticsearch. He introduced validation logic to ensure that queries use either standard BeginTime and EndTime or their millisecond-specific counterparts exclusively, aligning with Jaeger’s timestamp precision requirements. This backend development work, primarily using Go and JavaScript, improved the accuracy and consistency of observability data retrieval. By enabling more granular filtering of OTLP spans, Lukasz’s changes facilitated faster issue diagnosis and more reliable data validation. The feature addressed a specific need for precise time-based querying without introducing any new bugs.