Data Modelling & SQL Expert

• Develop and maintain data models including conceptual, logical, and physical models.

• Design and optimize database schemas such as star and snowflake models.

• Translate business requirements into scalable data architecture solutions.

• Perform SQL development including complex queries, CTEs, window functions, and stored procedures.

• Optimize database performance through indexing, query tuning, and schema refinement.

• Implement data validation rules and ensure data quality and governance standards.

• Create and maintain data dictionaries, metadata repositories, and ER diagrams.

• Collaborate with data engineers, ETL teams, and analysts for data integration.

• Work with relational databases such as Oracle, SQL Server, PostgreSQL, and MySQL.

• Support ETL processes and data warehousing implementations.