Proficient in Python 3. Design and implement ETL workflows. Author unit, integration and end-to-end tests for ETL. Troubleshoot python traces. Git for version control. Unix-like shells. Author CI/CD configs and scripts. Develop Azure Functions. Implement concurrency and resilience. Deploy and configure Azure Functions, Web Apps & App Service Plans, Storage Accounts, Communication Services, SQL Database / Managed Instance. Maintain secrets and access discipline. Implement data quality checks and validation steps. Relational data modeling & schema design. Data partitioning strategies & temporal tables. Query performance tuning. Complex T-SQL. Advanced MSSQL features. Author and maintain tables, views, Stored Procedures, Functions, and external tables. Strong analytical and problem-solving skills. Strong technical documentation skills.