Beytullah Orhan

Computer Engineering student with hands-on experience in SQL, Python, machine learning, and data analytics. Experienced in building analysis-ready datasets, feature engineering, customer analytics, dashboard development, and predictive modeling projects. Skilled in transforming large-scale raw data into actionable insights using SQL, Pandas, NumPy, Scikit-learn, and Power BI. Passionate about product analytics, user behavior analysis, and data-driven decision making.

CRM&Customer Analyst at Alternatif Bank (2025-10 – Present)

• Worked with large-scale customer datasets using SQL and Python for analytics and reporting processes.
• Performed data cleaning, preprocessing, transformation, and feature preparation for machine learning–based analytics projects.
• Developed customer segmentation and target audience datasets for analytical and campaign-focused studies.
• Built Power BI dashboards and KPI tracking reports for customer activity and product usage analysis.
• Conducted data validation and quality checks including null, duplicate, and consistency controls.
• Supported predictive analytics and customer behavior analysis using SQL, Python, Pandas, and Power BI.

Backend & Database Developer (Part-Time) at Eltagron (2024-02 – 2025-02)

• Contributed to a TÜBİTAK-supported ASP.NET project, playing a key role in stabilizing and recovering a mission-critical system.
• Continued as a part-time backend developer, taking on increased technical ownership.
• Led backend development and database design, building scalable system architecture.
• Designed and maintained PostgreSQL databases, including normalized tables and reusable schemas.
• Developed backend services and APIs using Flask and Django.
• Acted as technical team lead for ~10 interns and collaborated with stakeholders to translate business needs into backend and data models.

Finance & Operations Vice President at AIESEC (2022-02 – 2023-02)

• Managed financial reporting, budgeting, auditing and sponsorship operations, ensuring accuracy and compliance with internal guidelines.
• Prepared and reviewed periodic financial reports, tracking expenses, revenues and budget performance.
• Collaborated with international teams and external stakeholders in a multi-country, cross-functional environment.
• Supported financial planning and decision-making by providing structured reports and data-driven insights.
• Strengthened analytical thinking, reporting discipline, stakeholder communication and leadership skills.

Bachelor in Computer Engineering – Eskişehir Osmangazi University (2020-09 – 2026-01)