Christopher Thomas

Data Warehouse Engineer

Tata Consultancy Services •  January 2022 - Present•  Kochi, India

- Created and managed Informatica workflows and ETL codes for automated data processing. - Improved query performance by up to 15% through SQL tuning. - Created Oracle SQL scripts tailored to client requirements, delivering key business insights. - Developed an automated ticket creation system using Google Apps Script, ServiceNow, and Google Sheets. - Resolved issues in existing production ETL codes, ensuring seamless operations. - Conducted root cause analysis for production environment failures, leading to efficient issue resolution and minimised downtime.