• Own escalated technical issues once they exceed frontline or Tier 2 troubleshooting. • Reproduce and validate bugs across production, staging, or test environments. • Determine whether issues are product defects, data inconsistencies, configuration problems, or expected behavior. • Query databases and review logs to understand system state and failure modes. • Test backend APIs to isolate and confirm root causes. • Write or adapt lightweight scripts to support investigation, validation, or data analysis. • Create high-quality engineering tickets with clear problem statements, reproduction steps, expected vs actual behavior, and supporting evidence. • Partner with Product and Engineering to clarify scope, impact, and priority of escalated issues. • Identify patterns and recurring issues to help surface systemic problems.