Summary
Overview
Work History
Education
Skills
Affiliations
Timeline
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Tyler Day

Stockton,CA

Summary

Innovative data scientist with a robust background in machine learning, statistical analysis, and predictive modeling. Skilled in translating complex datasets into actionable insights that drive decision-making and business strategy improvements. Demonstrates strong problem-solving abilities and mastery of Python, R, SQL, and data visualization tools. Previous work has led to significant enhancements in operational efficiency and revenue growth through data-driven strategies.

Overview

13
13
years of professional experience

Work History

Lead Data Scientist

PayPal
San Jose, CA
01.2022 - 03.2024
  • Developed custom software components like APIs and scripts using Python and R programming languages; documented code changes and version control process.
  • Identified opportunities for automation within existing processes; implemented automated solutions where appropriate.
  • Developed proof-of-concept prototypes for stakeholders using advanced statistical techniques such as neural networks, random forest or deep learning models.
  • Led team meetings to discuss project progress, deliverables, timelines, budgets and resource allocation.
  • Maintained an up-to-date knowledge base of industry trends and best practices related to data science tools and techniques.
  • Evaluated different algorithms for a given problem statement; selected the one with best fit and highest accuracy based on available resources and time constraints.
  • Created machine learning models that accurately predict customer behavior and target market segments.
  • Performed exploratory data analysis on raw datasets to uncover insights which could be used in decision making across the organization.
  • Optimized existing algorithms by researching new methods and techniques for feature engineering and selection.
  • Analyzed real-world datasets from multiple sources to identify patterns in customer interactions with products and services.
  • Built dashboards using Tableau, PowerBI, QlikView to visualize key metrics related to customer engagement and retention strategies.
  • Provided technical guidance to junior Data Scientists in the development of predictive models for various business problems.
  • Collaborated with cross-functional teams to understand their requirements and develop data science solutions accordingly.
  • Facilitated communication between IT teams and business users by translating complex technical concepts into easy-to-understand language.
  • Conducted research into emerging technologies such as natural language processing, computer vision or reinforcement learning.
  • Developed and maintained data pipelines to ingest, clean, transform and store large volumes of structured and unstructured data.

Data Scientist

PayPal
San Jose, CA
03.2020 - 01.2021
  • Designed models, algorithms and visualizations to distill insights from huge volumes of data.
  • Developed predictive models using machine learning, natural language and statistical analysis methods.
  • Used statistical software to analyze and process large data sets.
  • Created graphs and charts detailing data analysis results.
  • Recommended data analysis tools to address business issues.
  • Distilled data to devise solutions related to budgeting, staffing and marketing decisions.
  • Applied feature selection algorithms to predict potential outcomes.
  • Tested, validated and reformulated models to foster accurate prediction of outcomes.

Machine Learning Scientist

PayPal
San Jose, CA
02.2019 - 03.2020
  • Developed and maintained predictive models to identify customer segments for targeted marketing campaigns.
  • Implemented supervised and unsupervised learning algorithms such as random forest, KNN, SVM, logistic regression in Python and R environment for predictive analytics projects.
  • Integrated trained models into web applications using Flask framework or other web frameworks.
  • Prepared reports summarizing research results for presentation to colleagues and management.
  • Developed machine learning algorithms to predict customer churn rates.
  • Developed new functions and applications to conduct analyses.

Data Science Intern

Blizzard Entertainment
Irvine, CA
06.2012 - 08.2012
  • Created visualizations of data with Tableau, PowerBI, and R Shiny.
  • Evaluated model performance metrics such as accuracy, precision, recall, F1 score.
  • Implemented natural language processing algorithms for text-based analysis tasks.
  • Documented data engineering workflows in Jupyter notebooks for reproducibility purposes.
  • Created graphs and charts detailing data analysis results.
  • Designed surveys, opinion polls and assessment tools to collect data.
  • Cleaned and manipulated raw data.
  • Demonstrated strong problem-solving skills, resolving issues efficiently and effectively.

Software Engineering Intern

Alphabet
Mountain View, CA
06.2011 - 08.2011
  • Provided technical support when needed by responding promptly to bug reports or feature requests.
  • Participated in design reviews to provide feedback on proposed solutions.
  • Optimized existing code by refactoring it for improved readability and performance.
  • Created technical documentation such as user manuals, flowcharts, and diagrams.
  • Developed REST APIs in order to facilitate communication between different services.
  • Implemented new features into existing software systems using HTML, CSS, JavaScript, and PHP.
  • Designed software configuration to meet multiple website system hosting requirements.

Education

Bachelor of Science - Computer Science And Informatics

University of California, Irvine
Irvine, CA
05-2013

Skills

  • Machine Learning
  • Deep learning
  • Cost Estimations
  • Customer-Centric Approach
  • System Administration
  • Technical Requirements
  • Design and development
  • Dashboard creation
  • Statistical Analysis
  • Intelligence Gathering
  • Business Forecasting
  • Data Mining
  • Data screening
  • Agile Methodology
  • Time-series analysis
  • Enterprise Resource Planning Software
  • Linear algebra
  • BI tools expertise
  • Business requirements gathering
  • NoSQL Databases
  • Computational design
  • Advanced mathematical abilities
  • Database Management
  • Data Exports

Affiliations

Raid Leader, US First Guild

World of Warcraft

Duration: 4 years

  • Successfully led a top-ranked team in achieving multiple first-place finishes in high-stakes competitive environments.
  • Coordinated complex strategies and tactics, demonstrating strong leadership and decision-making skills.
  • Managed and organized team schedules, ensuring effective communication and collaboration among diverse team members.
  • Analyzed performance metrics and adapted strategis to continuously improve team efficiency and success rates.

Professional Starcraft 2 Player

Duration: 2 Years

  • Competed at a professional level in national and international tournaments, consistently ranking among the top players.
  • Demonstrated exceptional strategic thinking, quick decision-making, and adaptability in high-pressure competitive scenarios.
  • Built and maintained a strong personal brand through streaming, social media, engagement, and community interaction.
  • Collaborated with sponsors and partners, enhancing the visibility and reputation of the associated brands.
  • Analyzed game data and opponents' strategies to refine techniques and maintain a competitive edge.

Private Pilot's License (PPL)

Issued by: Federal Aviation Administration (FAA)

Date of Issue: 03/05/2008

  • Certified to operate single-engine aircraft, demonstrating proficiency in flight operations, navigation, and safety procedures.
  • Experienced in handling various flight conditions and adhering to regulatory standards.
  • Conducted numerous solo and supervised flights, showcasing strong attention to detail and situation awareness.

Timeline

Lead Data Scientist

PayPal
01.2022 - 03.2024

Data Scientist

PayPal
03.2020 - 01.2021

Machine Learning Scientist

PayPal
02.2019 - 03.2020

Data Science Intern

Blizzard Entertainment
06.2012 - 08.2012

Software Engineering Intern

Alphabet
06.2011 - 08.2011

Bachelor of Science - Computer Science And Informatics

University of California, Irvine

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Tyler Day