Open to opportunities

Ayca Kaypmaz

@aycakaypmaz

Message

I lead data warehouse, governance, and AI-driven analytics initiatives for large-scale enterprise data platforms.

Turkey

Message

What I'm looking for

I'm looking for a part-time role where I can contribute hands-on to meaningful projects and share my experience in data, data warehousing, data governance, and AI-driven analytics.

At Trendyol, Türkiye's leading e-commerce platform, I led a 50-person DWH Analyst Team, including seven managers, supporting a Google BigQuery warehouse of more than 100 petabytes. I owned the data model, BI tooling, data catalog, governance policy, business roadmap, and delivery of analysis and reporting requirements.

Across Vodafone, PepsiCo, and Turkcell, I've built and governed enterprise data warehouses, led teams and transformation programs, and developed data models and ETL processes. I've also initiated Text-to-SQL and Conversational Analytics projects to make data discovery and analysis more accessible through natural language.

Experience

Work history, roles, and key accomplishments

Head of DWH Analyst Team

Trendyol

Jan 2021 - Aug 2026 (5 years 7 months)

Led a team of 50 professionals, including 7 managers, focusing on analyzing Trendyol's Data Warehouse built on Google BigQuery with over 100 Petabytes of data. Developed and executed the business roadmap for the Data Management tribe and initiated AI-driven projects such as Text-to-SQL and Conversational Analytics.

Data Warehouse BigQuery ETL Data Governance Looker Tableau SQL AI Text To SQL Conversational Analytics Data Modeling Data Catalogs Vendor Management

Data Management Senior Manager

Vodafone

Jan 2019 - Jan 2021 (2 years)

Led a team of 4 employees as Product Owner for Vodafone Türkiye's Data Warehouse operating on Oracle Exadata. Developed the business roadmap, consolidated data and reporting requirements, and coordinated local activities for the Vodafone Global Data Governance program.

Data Warehouse Oracle Exadata Product Ownership Data Governance UAT Data Modeling Stakeholder Management

Data Governance Manager

Vodafone

Jan 2016 - Jan 2019 (3 years)

Developed and initiated the implementation of the Data Governance Policy for Vodafone Turkey. Ensured compliance with GDPR regulations, including dynamic data masking, and verified the accuracy of critical data in source systems.

Data Governance GDPR Data Masking Data Quality Data Warehouse Source System Analysis

BI & Data Manager

PepsiCo

Jan 2015 - Jan 2016 (1 year)

Led a team of 8 employees and oversaw the transformation project of the Data Warehouse to Teradata. Served as the business engagement manager to gather requirements and managed the IT budget for the DWH.

Data Warehouse Teradata Team Leadership Budget Management Business Analysis Data Quality

Senior Expert Business Analyst

Turkcell

Jan 2004 - Jan 2015 (11 years)

Served as Enterprise Architect for Business Intelligence systems at Turkcell and Superonline, overseeing architecture, developing logical and physical data models, and designing the To-Be architecture. Managed the budget for BIS systems and led the Superonline BIS Re-engineering Project.

Enterprise Architecture Business Intelligence Data Modeling Data Warehouse Budget Management Technical Leadership

Developer - Technical Analyst - Business Analyst

Turkcell

Jan 1999 - Jan 2004 (5 years)

Worked as a developer for the first Data Warehouse project of Turkcell, designing the logical model, developing ETL codes in PL/SQL, and supporting the ETL process. Managed data quality processes for the Data Warehouse.

Data Warehouse ETL Pl SQL Data Quality Data Modeling