Summary
Overview
Work History
Education
Skills
Websites
Contact Details
Projects
Timeline
Generic

Ayse Yaman

Sr. Data Scientist & Statistician
Istanbul

Summary

As a Data Scientist with over five years of experience in the healthcare and retail sectors, I specialize in Python, SQL, and statistical analysis. I've developed effective fraud detection systems and recommendation engines, significantly improving business operations. I excel in leading teams to implement sophisticated analytical solutions for complex challenges. My expertise extends to manipulating data with Python libraries such as NumPy, Pandas, Scikitlearn,Tensorflow, and utilizing advanced machine learning techniques like XGBoost and LightGBM. I'm skilled in handling large datasets with a strong commitment to driving data-driven decisions and adding real value to business outcomes.

Overview

7
7
years of professional experience
9
9
years of post-secondary education

Work History

Senior Data Scientist

Extra360
1 2023 - Current

Data Scientist

Extra360
10.2021 - 01.2023

Tıkla Gelsin

Acıbadem Health Group (Life Club)

Alivi Health Group

İnci Akü

  • Managed extensive datasets with MS SQL, enhancing data integration and real-time processing using Python and Spark.
  • Conducted comprehensive data cleaning, transformation, and extraction tailored to organizational data structures to enhance data integrity and usability.
  • Led exploratory data analysis and advanced modeling initiatives, deriving insights that informed critical business decisions. Optimized MS SQL database performance through strategic use of indexing, partitioning, and query optimization techniques, significantly enhancing handling of large datasets.
  • Developed and maintained scalable data pipelines, integrating MS SQL with Python, Spark, and Hadoop to ensure seamless data workflows across platforms.
  • Designed and implemented automated jobs and tasks using SQL Server Agent, reducing manual effort and boosting process efficiency.
  • Applied sophisticated statistical and machine learning methods including regression models, recommendation engines, association rules, sales prediction, and A/B testing to drive data-driven strategies.
  • Performed RFM analysis, customer segmentation, cohort analysis, and churn analysis to support targeted marketing efforts and customer retention strategies.
  • Directed various analytical projects across retail and healthcare sectors, focusing on payment systems and loyalty programs to enhance customer engagement and profitability.
  • Managed complex SQL queries and procedures, improving database functionality and user experience.
  • Utilized a broad array of Python libraries (NumPy, Pandas, Scikit-learn, SciPy) for data manipulation, EDA, and preprocessing tasks.
  • Created insightful data visualizations and interactive dashboards using Matplotlib and Seaborn; trained deep learning models using Keras and TensorFlow to further business intelligence.
  • Developed recommendation engines tailored to both health and retail sectors, enhancing personalized customer experiences.

Data Analyst

Koton
10.2019 - 10.2021
  • Conducted exploratory data analysis and statistical modeling, leveraging large datasets and enhancing data management capabilities with MS SQL, Python, DAX, and Access.
  • Produced comprehensive analytical reports by monitoring existing KPIs, detecting anomalies, and generating new KPIs to guide business strategies.
  • Automated key data management tasks using SQL Server Agent, significantly improving system efficiency and reducing manual labor.
  • Utilized data mining, statistical algorithms, and optimization techniques to uncover patterns in data, enhancing the meaningfulness and applicability of analytical results.
  • Implemented advanced statistical and machine learning techniques, including regression models, sales predictions, and A/B testing, providing strategic insights to drive business decisions.
  • Engaged in complex query handling and ad-hoc analysis, supporting critical analytical needs across various departments.
  • Conducted thorough customer segmentation, association rule mining, and cohort analysis to tailor marketing efforts and improve customer engagement strategies.
  • Maintained clear and concise documentation of analytical processes and findings, ensuring knowledge transfer and collaboration within the team.

Writer (Data Science)

Miuul
5 2022 - 2 2023

Writing contents related data science, machine learning and sharing codes or queries about it.

miuul.com/ayse-yaman

Data Science and Machine Learning Bootcamp Partici

Veri Bilimi Okulu / Miuul
12.2020 - 05.2021
  • Sorting & Scoring Problems
  • Dynamic Pricing
  • AB Testing
  • KPI & Cohort Analysis
  • Customer Segmentation / RFM Analysis / CLTV
  • Association Analysis
  • Recommendation Systems
  • House Price Prediction Models
  • Unsupervised Machine Learning (K-Means, PCA, Hierarchical Cluster Analysis)
  • Time Series with Machine Learning Algorithms
  • Time Series (Holt Winters, Statistical, Machine Learning Approach)

Travel Analyst

biletbayisi.com
07.2017 - 07.2018

The firm that known biletbayisi.com is online fight ticket sales platform.

  • Utilized advanced statistical methods for sales analysis, categorizing data by demographic factors and enhancing strategic business planning.
  • Following and forecasting passenger habits, creating dashboards by observing the passenger population.
  • Planning of personel sales target. Following links are reports that I've written about passengers' behaviour and percentage of sales.

https://www.aa.com.tr/tr/ekonomi/100-kisiden-80i-ucak-biletini-internetten-aliyor/1096050

Education

Statistics -

Gazi University
09.2011 - 05.2016

Computer Programming - undefined

Kocaeli University
09.2018 - 05.2023

Skills

  • Machine Learning Algorithms: Skilled in using XGBoost, LightGBM, and Gradient Boosting
  • Data Manipulation Tools: Extensive experience with Python libraries such as NumPy, Pandas, and Scikit-learn
  • Database Management: Competent in using MS SQL for complex query execution and database management
  • Big Data Technologies: Experienced with Spark, Hadoop, and MongoDB for handling large datasets
  • Data Visualization: Adept at creating insightful visualizations using tools like Matplotlib and Seaborn
  • Problem Solving: Strong analytical skills with a knack for solving complex problems
  • Leadership: Proven track record of leading teams and driving projects to successful completion
  • Communication: Effective communicator capable of presenting complex data-driven insights to technical and non-technical audiences
  • Passion for Data: Committed to leveraging data to drive business decisions and improve operational efficiency
  • Contact Details

    linkedin.com/in/ayse-yaman, ayseyaman.medium.com, kaggle.com/ayseymn

    Projects

    • House Price Prediction

    Regression Techniques & Machine Learning Algorithms (LightGBM - Random Forest - XGBoost ) 

    • Hybrid Recommender System - Netflix Prize Datasets

    link: ayseyaman.medium.com/hybrid-recommender-system 

    • Rating Products & Sorting Reviews with Amazon dataset

    link: ayseyaman.medium.com/rating-products-sorting-reviews 

    • RFM Analysis for Customer Segmentation

    link: ayseyaman.medium.com/rfm-analizi

    • Image Classification / Object Detection

    Timeline

    Data Scientist

    Extra360
    10.2021 - 01.2023

    Data Science and Machine Learning Bootcamp Partici

    Veri Bilimi Okulu / Miuul
    12.2020 - 05.2021

    Data Analyst

    Koton
    10.2019 - 10.2021

    Computer Programming - undefined

    Kocaeli University
    09.2018 - 05.2023

    Travel Analyst

    biletbayisi.com
    07.2017 - 07.2018

    Statistics -

    Gazi University
    09.2011 - 05.2016

    Senior Data Scientist

    Extra360
    1 2023 - Current

    Writer (Data Science)

    Miuul
    5 2022 - 2 2023
    Ayse YamanSr. Data Scientist & Statistician