Ramazan Erduran

BI Consultant @ BI Technology | End-to-End Qlik Sense Delivery: SQL Modeling, ETL, Deployment & Optimization

Ankara, Türkiye

About

I build Qlik Sense solutions end to end — SQL data models, ETL, dashboards, deployment, optimization — as a BI Consultant at BI Technology. Flagship work: SunExpress route optimization (OCC daily-use dashboard, 15-min refresh, ~€1M estimated annual impact, Qlik AI Reality Tour success story) plus a cloud migration cutting combined memory and reload ~63%. Hacettepe Statistics graduate (Honors). At BI Technology, I grew from L2 support to BI Consultant.

Experience

  • Business Intelligence Consultant at KOMTAS
    Aug 2023 - Present · 3 yrs 4 mos

  • BI Technology Qlik Master Reseller (3 yrs 4 mos)
    • Business Intelligence Consultant
      Jan 2025 - Present · 1 yr 11 mos

    • Istanbul, Türkiye
      Present

    • Present
      - Led and developed end-to-end BI delivery for SunExpress route cost optimization (Feb 2025 – Feb 2026): integrated multiple data sources into SQL-based data models, built the Qlik Sense analytics layer, and partnered with cross-functional teams on requirements; estimated impact of around EUR 1M annually. Presented as a success story at the Qlik AI Reality Tour. - Built an operations dashboard (5 sheets, 15-minute refresh) used daily by the OCC team for aircraft and flight assignments. - Contributed to the SunExpress cloud migration, consolidating two cluster-based on-prem environments (previously under my server maintenance responsibility) into a single cloud tenant: combined app memory footprint down about 63% and total reload time down about 63%. - Gathered requirements directly from business stakeholders and translated them into KPI-focused dashboards supporting strategic decisions. - Owned Qlik Sense application deployment end to end, from initial setup to ongoing maintenance, optimization, and technical consultation on architecture performance.

    • Jr. Business Intelligence Consultant
      Jan 2024 - Jan 2025 · 1 yr 1 mo

      - Designed and developed Qlik Sense dashboards for multiple clients, translating business needs gathered with senior consultants into data-driven solutions. - Performed ETL of client data into Qlik Sense, including data cleaning and preprocessing. - Wrote application and report documentation defining project scope and functionality.

    • Technical Consultant
      Aug 2023 - Jan 2024 · 6 mos

      - Provided L2 software support for Qlik Sense and Qlik NPrinting, managing system configurations for performance and reliability. - Resolved environment issues covering TCP/IP, Websocket, and database connectivity, minimizing system downtime.

  • TURBOARD (5 mos)
    • Data Scientist
      Aug 2022 - Oct 2022 · 3 mos

      • Improved model accuracy and precision by implementing machine learning and deep learning algorithms. • Optimized data analysis processes, reducing project timelines and increasing on-time delivery rates. • Enhanced data processing speed by leveraging Spark for handling large datasets. • Reduced SQL query durations and improved data access performance through optimized database operations. • Supported data-driven decision-making by providing actionable insights using data visualization tools.

    • Data Science Intern
      Jun 2022 - Jul 2022 · 2 mos

      • Developed a machine learning model in Python to predict house prices. • Executed data cleaning, merging, and querying tasks using SQL and Python. • Created interactive data visualizations to support data analysis and reporting processes.