A Senior SQL Developer is a high-level database professional who designs, builds, and optimizes relational database systems to ensure data flows efficiently across an organization. While junior developers write basic queries, seniors act as database architects and performance experts who ensure enterprise systems handle massive data volumes without crashing. Core Responsibilities
Performance Tuning: Diagnosing slow-running queries and rewriting them. They utilize execution plans, indexing strategies, and partitioning to speed up data retrieval.
Database Architecture: Designing schemas, defining tables, setting up relationships, and enforcing data integrity constraints.
Advanced Coding: Writing complex stored procedures, triggers, views, and user-defined functions.
ETL and Integration: Building Extract, Transform, Load (ETL) pipelines to move data safely between on-premise systems and cloud platforms.
Production Ownership: Taking accountability for data security, backup strategies, disaster recovery, and system uptime (SLAs). Key Skills Required
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