Job Title: Senior SQL Performance Engineer (Indexing & Tuning Expert)Location: Remote Experience Level: Senior / Expert About the RoleWe are seeking a SQL Expert with a deep specialization in database internals, query lifecycle analysis, and high-concurrency performance tuning. In this role, you will not just "maintain" databases; you will be the primary authority on why a query is slow and how to fix it. You will work closely with our backend engineering teams to review schema design, optimize