Tolga Boroglu

Data Scientist & Data Analyst

About Me

Data Scientist and Machine Learning Developer with 3 years of experience in building statistical and predictive machine learning models, NLP (Natural Language Processing), analyzing noisy datasets, and designing decision support tools and services. Skilled in SQL, Python, and scientific computing languages, with a passion for extracting insights from data and driving data-driven decision-making processes.

Experience

🚧Data Analyst | Kodlasam
03/2023 - 12/2023► Experienced instructor in Data Analysis using Python, delivering comprehensive instruction to participants in a Bootcamp program.Designed and developed curriculum materials, lesson plans, and learning resources to effectively convey complex concepts. Provided hands-on training and guidance, facilitating students' understanding and application of Python for data analysis tasks. Created engaging and interactive learning experiences through practical exercises and real-world case studies🚧BI & DWH Developer | Trive
06/2023 - 09/2023► Extensive experience in report preparation utilizing Microsoft SQL.► Demonstrated expertise in the creation and support of Tableau Dashboards.► Developed and deployed MS SQL and PostgreSQL stored procedures to support ETL processes, resulting in a 15% reduction in manual work and 20% increase in data loading speed.🚧 Data Scientist - Freelancer | Upwork
10/2022 - Present►Seasoned professional in NLP and machine learning, specializing in text and document automation systems. Proficient in Apache Spark for big data processing, model development, and report generation. Achieved 86% accuracy in sentiment analysis. Implemented logistic regression, k-NN, and gradient boosting models for predictive analytics, attaining a 99% success rate in estimating customer behavior.►Proven ability to optimize processes for data-driven decision-making.► Spearheaded a comprehensive sales data analysis project for a café business, leveraging Power BI's robust analytical features.
Developed a reporting and visualization solution to understand and enhance the café's sales performance and business strategies. Focused on tracking and analyzing daily, weekly, and monthly sales trends, utilizing Power BI to discern sales patterns, identify topselling products, and observe customer behaviors. Implemented dynamic time-based analysis to evaluate the café's traffic at different hours and assess the impact of special events on sales.Delivered actionable insights that enabled the café to optimize sales strategies, make informed decisions on popular products, and improve inventory management.
Provided data-driven recommendations for enhancing marketing strategies by evaluating the effects of promotions and special events on sales.

Qulifications

  • Machine Learning Algorithms (PCA, K-means, Random Forest, XGboost, Logistic Regression, SVM , Linear Regression and etc)

  • Power BI and Tableau for visualization and analysis.

  • Strong hands on experience and knowledge in Python and Excel

  • Good understanding of statistical principles and their respective applications

  • Excellent team-player and displaying strong sense of initiative on tasks

  • Natural Language Processing (NLP - topics clustering, text generation, sentiment classification) and text analysis.

  • Deep Learning (Neural Networks, Convolutional Neural Networks, Recurrent Neural Networks)

  • Deep Learning Frameworks (Tensorflow)

Contact for more

© 2023 Tolga Boroglu