and/or transports placardable amounts of hazardous materials by ground in any vehicle on a public road while in commerce, may be subject to additional Federal Motor Carrier Safety Regulations including: Driver Qualification Files, Medical Certification (obtained before onboarding), Road Test, Hours of Service, Drug and Alcohol Testing, vehicle inspection requirements, CDL requirements (if applicable) and hazardous materials transportation/shipping training. Own the design, deployment, and tuning of search, indexing, and observability capabilities using the Time series databases like Elastic Stack (Elasticsearch, Logstash, Kibana) for high-volume time-series and log data, including index lifecycle, sharding, and retention strategies.