Logstash Developer Engineer – L2

Logstash Developer Engineer – L2

Role Summary We are looking for a hands-on Logstash Developer Engineer – L2 responsible for developing, enhancing, troubleshooting, and optimizing Logstash pipelines and Grok parsers for diverse security and infrastructure log sources. The engineer should independently handle complex parsing and ingestion issues while ensuring zero log loss, accurate ECS field mapping, and optimal pipeline performance. Key Responsibilities

• Develop, enhance, test, and deploy Logstash pipelines and Grok patterns for security, network, cloud, application, database, and OS log sources.
• Independently troubleshoot Not Grokked events, parsing failures, log drops, delays, incorrect tagging, and pipeline-routing issues.
• Parse and normalize logs into Elastic Common Schema (ECS) or defined SIEM schemas.
• Work with Grok, Dissect, JSON, KV, Mutate, Date, Ruby and other Logstash filters.
• Validate raw-to-parsed event flow and ensure all intended fields are correctly extracted and mapped.
• Handle multiline, nested JSON, variable-format and high-volume log sources.
• Troubleshoot end-to-end ingestion across Syslog/Filebeat/Elastic Agent → Logstash → Kafka/Redis → Elasticsearch/SIEM environments.
• Perform Grok regression and validation before production deployment to ensure no field loss or parsing rework.
• Optimize Logstash configurations for throughput, CPU/memory utilization, queue management and pipeline stability.
• Diagnose Elasticsearch indexing/mapping errors related to ingestion pipelines.