Ruud T.

Ruud T.

Senior Full Stack Data Scientist

Amsterdam, Netherlands
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Work history

UpStack
UpStack
Senior Data Scientist
2019 - Present (5 years)
Remote
  • Worked with a large global research and advisory firm to design and develop a data platform including architecture, prototyping, and development of data extract, transformation, cleansing, and integration of structured and unstructured data.

  • Developed optimal design of data warehouse environments, analyzing complex distributed data deployments and making recommendations to optimize performance.

  • Transformed raw data into useful information and insights using analytics, BI, and visualization tools.

Save the Children International
Save the Children International
Senior Data Specialist
2022 - 2024 (2 years)
Remote
  • Developed and tested T-SQL stored procedures and SQL functions for ETL processing including staging and target processing.

  • Created and maintained optimal pipeline architecture in Cloud Microsoft Azure using Data Factory and Databricks.

  • Delivered denormalized data for Power BI consumers for modeling and visualization from the produced layers in the Azure Data Lake.

  • Used web scraping techniques like Beautiful Soup in Python to extract and organize competitor INGO data.

Azure Python 3 PythonLooker Studio Azure SQL MySQLPostgreSQLR Programming Jupyter NotebookExcel VBAMicrosoft Power BI Airbnb JenkinsDatabricks Automated Data Flows Git Flow AWST-SQLSQLSQL Stored Procedures ETLAzure Data FactoryAzure Data Lake Beautiful Soup Web Scraping
Xentral ERP Software
Xentral ERP Software
Senior Data Scientist
2021 - 2022 (1 year)
Remote
  • Worked collaboratively with the board to develop a strategy and approach to defining business challenges to be answered by data analytics.

  • Managed other data scientists' workload and priorities and developed product/area-specific Data Science roadmaps with increased job efficiency of 45%.

  • Developed strategies to help clients activate their analytics and create a more data-driven culture.

  • Supported the development of the Data Analytics team both as line manager and mentor for junior team members.

  • Measured the effectiveness of improvements through deep analysis of data on performance metrics, striving for high-quality, cost-effective improvements.

Amazon S3 (AWS S3) AWSPythonBusiness to Business (B2B) TableauLooker Studio Dynamic Analysis Sales Forecasting Trend Forecasting Marketing Analytics Predictive Modeling
G-Star RAW
G-Star RAW
Senior Data Scientist
2020 - 2021 (1 year)
Amsterdam (Hybrid), Netherlands
  • Formulated, suggested, and managed data-driven projects to further business interests, tracking and making suggestions for ways to improve KPIs.

  • Measured the effectiveness of improvements through deep analysis of data on performance metrics, striving for high-quality, cost-effective improvements.

  • Assisted in the design of various experiments, formulation, discovery of various hypotheses, and training and scoring of existing and potential models.

  • Identified key performance metrics and benchmarks related to user behavior, user segmentation, and user retention.

Data-driven Marketing PythonR Programming Linear Programming TableauFinancial Forecasting BigQuery Bayesian Statistics Dynamic Pricing Marketing Analytics Data ScrapingFinancial Data Analytics Scientific Data Analysis Git Repo
NOVI Hogeschool
NOVI Hogeschool
Data Analytics Teacher
2018 - 2021 (3 years)
Utrecht (Hybrid), Netherlands
  • Taught Data Science, full-stack development, and cybersecurity-related courses such as Machine Learning, UML, and R/Python programming.

  • Researched new teaching techniques and strategies and presented findings to other college professors.

  • Reviewed the current curriculum to check if updates are needed.

SparkPythonHiveSQLUMLPowerBIMicrosoft AzureAgile MethodologiesData ScienceData EngineeringUniversity Teaching Azure PostgreSQLR Programming Linear Programming Bayesian Machine Learning LookerTableauAWSFinancial Data Analytics
Ministerie van Defensie
Ministerie van Defensie
Senior Data Scientist
2018 - 2020 (2 years)
The Hague, Netherlands
  • Developed intricate algorithms based on deep-dive statistical analysis and predictive data modeling that deepened relationships and strengthened longevity and personalized interaction with customers, leading to a 25% increase in customer satisfaction and 16% increase in sales.

  • Updated the company's data warehousing techniques, data recall, and segmentation, resulting in a 30% increase in usability for non-technical staff members.

  • Developed an ETS for data sources used for reporting by the sales, inventory, and marketing departments and modernized the data streamlining processes, reducing redundancy by 25%.

Elsevier
Elsevier
Quantitative Analyst
2016 - 2016
Remote
  • Implemented loss-minimization techniques resulting in a positive overall loss reduction of 10% on monthly revenues.

  • Achieved a 14% month-on-month increase in revenue applying dynamic pricing techniques.

  • Located and defined two new process improvement opportunities that increased the company’s revenue by 15%.

Canal Digitaal
Canal Digitaal
Marketing Intelligence Analyst
2015 - 2018 (3 years)
Hilversum, Netherlands
  • Built statistical models using historical data to conduct customer-based pricing and constructed several predictive models such as bad debt and churn models, resulting in a 20% lower churn and 8% lower high-risk debtors.

  • Developed prediction algorithms using advanced data mining algorithms to classify similar properties together to develop sub-markets dividing each zip code into sub-markets.

  • Refined personalization algorithms for 400K customers on web and mobile, boosting engagement and time spent on the platform by 25%.

Emesa
Emesa
Junior Business Analyst
2014 - 2015 (1 year)
Amsterdam, Netherlands
  • Solved complex business problems using Machine Learning techniques like Regression, Classification, Supervised and Unsupervised Recommenders, increasing team efficiency by 20% and reducing costs by 27%.

  • Performed market analysis to efficiently achieve business objectives, increasing sales by 34%.

  • Used web scraping techniques to extract and organize competitor data for evaluation.

Politieke Academie
Politieke Academie
Political Data Analyst
2014 - 2015 (1 year)
Amsterdam, Netherlands
  • Researched and analyzed political systems in various countries and developed and implemented (social) media strategic plans and political proposals for clients.

  • Used R to create a matrix of political, demographic, and household data to develop a set of predictive models that applied a score to every voter.

  • Identified voters who would be positively influenced by ads, mailings, social media, and other outreach efforts, which resulted in local political parties winning several municipal and provincial seats.

Portfolio

Data Scientist - Reduce Churn in Customer Base
Data Scientist - Reduce Churn in Customer Base

The project goal was to develop a churn prediction model that analyzes subscribers’ past behavior to predict the likelihood of churn of any subscriber for the immediate next month. The base prediction model was created using Logistic regression and the precision of the model was around 57%. Worked on feature enhancements to improve the precision of the overall ensemble model by including more variables from social network analysis (SNA)-based interaction of the subscribers. The overall accuracy of the ensemble was enhanced by another 18% using augmented variables.

Data Scientist - Improve Customer Service with Machine Learning
Data Scientist - Improve Customer Service with Machine Learning

Used an NLP-based Deep Learning model and Seq2seq to train a chatbot on past customer service conversations and respond to future messages in a way that a real customer service employee would. The model helped the company deepen relationships with customers, extended their CLV, and gave the customers quicker and more personalized responses. After implementation, the new model boosted customer satisfaction by 25%, reduced average waiting time by 10%, and improved the NPS by 7%.

Data Scientist - Increase Retention in Stronghold Areas
Data Scientist - Increase Retention in Stronghold Areas

The project goal was to stabilize or increase retention in the company’s stronghold areas, which were poorly connected neighborhoods with little to no access to high-speed internet. Developed a web scraping bot to scrape competitors’ websites to get an overview of their expansion plans in the interested areas and used this information to develop attractive retention offers to customers. The bot implementation increased retention by 40%.

Education

AI & Data Science Expert 3-Star Program - 2016
AI & Data Science Expert 3-Star Program - 2016
GAIN® - The Global AI network
2019 - 2019
MSc Environment and Resource Management
MSc Environment and Resource Management
VU Amsterdam - Netherlands
2012 - 2014 (2 years)
Post-initial MA Latin American and Caribbean Studies
Post-initial MA Latin American and Caribbean Studies
University of Amsterdam - Netherlands
2010 - 2012 (2 years)
BA Political Science/International Relations/International (Public) Law
BA Political Science/International Relations/International (Public) Law
University of Utrecht - Netherlands
2006 - 2010 (4 years)