Database Developer

A Database Developer (or SQL Developer) is responsible for the design, implementation, and maintenance of the systems that store and manage a company's most valuable asset: its data. They ensure that information is structured logically, retrieved quickly, and stored securely.

Core Roles & Responsibilities

• Database Design & Modeling: Creating high-level architectural blueprints using Entity-Relationship (ER) Diagrams to define how data tables link together.
• Coding & Programming: Writing complex, optimized queries using SQL (Structured Query Language) to manipulate and retrieve data.
• Stored Procedures & Triggers: Developing automated server-side logic to handle repetitive tasks and maintain data integrity without manual intervention.
• Performance Tuning: Monitoring query execution times and "indexing" tables to ensure applications remain fast even as the database grows to millions of rows.
• ETL Management (Extract, Transform, Load): Building pipelines to move data from various sources into a centralized Data Warehouse for analysis.
• Data Security & Access: Implementing user permissions and encryption protocols to protect sensitive data and comply with regulations like GDPR or SOC2.
• Troubleshooting & Bug Fixing: Identifying and resolving issues like "deadlocks," data corruption, or connection failures within the database environment.
• Data Migration: Overseeing the safe transfer of data from legacy systems to modern cloud environments like Snowflake or Google BigQuery.

Essential Technical Stack

• Relational Databases (RDBMS): Mastery of MySQL, PostgreSQL, Microsoft SQL Server, or Oracle.
• NoSQL Databases: Familiarity with non-tabular systems like MongoDB or Cassandra for big data applications.
• Cloud Infrastructure: Experience managing managed databases on AWS RDS or Azure SQL.