Head of Business Intelligence

As the Manager of the Business Intelligence department, I lead the development and execution of all BI strategies and processes including people management. My key responsibilities include:

• Built BI infrastructure from the ground up, growing the BI department from 0 to 14 team members within 14 months, expanding BI product coverage to over 50 business streams.
• Developed 400+ reports and managed license negotiations with vendors, scaling the system to 1000+ users within 18 months.
• Led negotiations with C-level executives and collaborating with internal teams.
• Recruited and onboarded 14 middle+ specialists setting a high-performing team.
• Served as the primary tech authority, resolving 100+ complex technical challenges in dashboard development, infrastructure issues and cross-team projects.
• Established an internal Tableau Server monitoring system with 12 dashboards, resulting in a 65% boost in user engagement and the automation of 80% of all report refreshes.
• Implemented an automated system for deleting accounts of former employees, significantly improving server security and cleanliness.

Led a BI stream in the Data Department, establishing the Tableau initiative from scratch as a Product, focusing on its implementation and growth within the holding

• Created a comprehensive BI style guide and standardized DEV/UAT/PROD processes.
• Automated report updates via Apache Airflow DAGs, ensuring 100% data freshness across 50+ dashboards and increasing stakeholder trust in BI and data quality.
• Set and evaluated 8 documents and regulations aligned with organizational objectives.

• Created & optimized 20+ Tableau reports, improving load times by 25%, while managing Tableau Server administration for 100+ users and co-authoring a BI style guide.
• Implemented a User Management Report using Tableau REST API and Python, resulting in identification of 50+ underutilized accounts and irrational usage of 5+ data sources.

As a full-stack Tableau developer, I achieved the following:

• Developed and delivered 20+ high-impact Tableau reports, including designing dashboards, integrating interactive elements, managing row-level security, preparing of data sources in SQL and presenting dashboards to 50+ end-users.
• Streamlined Tableau Server administration, managed permissions for ~3000 users and optimized 10+ background tasks for improved performance.

As part of the Sales & Marketing and Airport Operations teams, I led the comprehensive development of the regional office, where I achieved:

• Built 3 reports using MicroStrategy DWH, Midas, and Power BI to conduct competitor analysis, uncovering 10–15% fare adjustment opportunities that boosted profitability by 12% and passenger traffic by 8%.
• Generated an operational performance report that identified flight delays caused by handling companies’ organizational issues, enabling SLA negotiations that reduced service costs for Turkish Airlines by 15% and improved on-time performance.
• Awarded first place twice in the Corporate Innovation and Projects Directorate for valuable ideas, with a total of 7 submitted ideas.
• Trained 5 new employees, enhancing team skills and operational efficiency.