SULTAN KÖKDUMAN
Istanbul,34
Summary
Business & Data Analyst with a strong background in mathematics, reporting automation, and stakeholder engagement. Proven experience in translating business requirements into actionable data models, and visual insights. Adept at designing dashboards, building data pipelines, and collaborating cross-functionally in fast-paced fintech, and retail environments. Fluent in English and French, with strong skills in SQL, Tableau, Qlik, and data storytelling.
Overview
3
3
years of professional experience
1
1
Certification
Work History
BI / Business Analyst
Papara
08.2024 - Current
- Acted as a bridge between business units and the data team to analyze requirements and deliver data-driven solutions.
- Created summary tables and optimized SQL queries to enable scalable, report-ready datasets.
- Designed and developed dashboards in Tableau for C-level stakeholders, and Central Bank reporting.
- Translated ad-hoc business requests into structured analyses and automated pipelines.
- Conducted UAT, collaborated with ETL engineers to ensure data accuracy, and aligned reporting logic with evolving business needs.
Business Intelligence Specialist
Beymen Group
06.2023 - 08.2024
- Built department-specific datamarts and interactive dashboards using Qlik Sense and MicroStrategy.
- Designed complex SQL and Oracle queries to support campaign analytics, customer segmentation, and inventory planning.
- Partnered with business units to understand KPIs and translate them into visual insights.
- Participated in UAT and contributed to requirement documentation for system improvements.
Business Analyst Intern
Enerjisa
09.2022 - 06.2023
- Conducted requirement gathering sessions with business users and documented use cases for SAP modules.
- Supported IT testing processes in Jira and monitored agile project timelines.
- Mapped current processes and suggested data-driven improvements for business operations.
Strategic Business Development Intern
BSH Turkey
04.2022 - 09.2022
- Tracked operational KPIs and provided reports to support decision-making.
- Identified system improvement areas through field feedback and internal data analysis.
- Assisted in coordinating demand pool management for field operations.
Education
Bachelor’s Degree - Mathematics
Galatasaray University
Istanbul01.2023
Skills
- Technical: SQL, Oracle, Python, Tableau, Qlik Sense, MicroStrategy, SAP, Microsoft Office, Jira, UAT testing
- Soft Skills: Stakeholder Communication, Requirement Gathering, Process Mapping, Analytical Thinking, Problem Solving, Team Collaboration, Time Management
Certification
- Data Analyst Associate – DataCamp
- DELF B2 – Institut Français
- HSBC StepUp Program
Languages
French, English
Projects
Twitter Sentiment Analysis (NLP): Built a sentiment classifier in Python using scikit-learn and NLTK on 5,000+ tweets. Achieved 82% accuracy and visualized polarity trends using matplotlib and seaborn.
Domain Info GUI Tool: Developed a Tkinter-based GUI that automates domain information extraction, providing an easy interface for non-technical users.
Volunteer Experience
Emmaüs France, Volunteer Sales Assistant, 2019-07, 2019-08, Supported daily operations in a non-profit retail environment., Collaborated with international volunteers and engaged with customers in French.
Timeline
BI / Business Analyst
Papara
08.2024 - Current
Business Intelligence Specialist
Beymen Group
06.2023 - 08.2024
Business Analyst Intern
Enerjisa
09.2022 - 06.2023
Strategic Business Development Intern
BSH Turkey
04.2022 - 09.2022
Bachelor’s Degree - Mathematics
Galatasaray University