Wataru Ishihara

Physics → Data → Product

Data analyst intern with a passion for product analytics and machine learning. Currently completing a summer internship in Tokyo; returning to the U.S. Sept 21.

View RésuméEmailGitHubLinkedIn
Product Analytics
Deals page activation, onboarding cohorts, funnels.
PyTorch Mini LMs
Bigram → transformer to teach attention.
UC Davis
BS Computational Physics · Class of 2025.
Based in California
Bilingual (EN/JP), cross-cultural teamwork.

About

I have a passion for product analytics and machine learning, and enjoy translating data into actionable insights. With my background in physics and experience in data analysis, I bring a unique perspective to problem-solving and decision-making. With my strong communication skills and ability to work collaboratively across teams, I am confident in my ability to make a meaningful impact in any organization.

Experience

Reazon Holdings (menu)

Data Analyst/Project Manager Intern — User-side Development

Summer 2025 · Tokyo, JP

  • Used Neural Networks to create behavioral embeddings for 10M+ users, clustering them into personas.
  • Analyzed large-scale event logs with DuckDB + Pandas to build repeatable pipelines.
  • Translated metrics into actionable product stories (e.g., deals page ↑ order likelihood).
  • Drove first-time retention analyses by mapping screens/modals to return behavior.
SQLBigQueryDuckDBPandasPythonCohortsgensimPyTorchA/B TestingProduct Analytics
UC Davis · Research

Monte Carlo / Ising Model (Computational Physics)

2023–2025 · Davis, CA

  • Built simulation & analysis tooling for statistical mechanics coursework/research.
  • Explored random processes, convergence behavior, and visualization pipelines.
C,PythonNumPyMatplotlibPhysics
Formula SAE · Vehicle Dynamics

Simulation & Optimization

2024–2025 · UC Davis

  • Ran suspensions/vehicle dynamics sims to inform design trade-offs.
  • Collaborated across subteams; translated metrics into design choices.
MATLABSimulationOptimization
UC Davis Contuing & Professional Education

Bilingual Interpreter (Japanese/English)

2023–2025 · Davis, CA

  • Facilitated communication between Japanese-speaking students and English-speaking instructors in mini MBA courses.
  • Translated technical terms and concepts in business, finance, and marketing.
JapaneseEnglishCommunicationBusinessFinance

Projects

Transformer Language Models in PyTorchView

Built mini-transformer models to teach attention and generation.

PyTorchNLPEducation
App User Behavior EmbeddingsView

Created user embeddings with neural networks to cluster 10M+ users into personas

gensimPyTorchNLPSQLProduct AnalyticsBigQuery
Image Classification Models in PyTorchView

Built a Convolutional Neural Network (CNN) to classify MNIST fashion dataset images with high accuracy

PyTorchNLPEducation
Deals Page Impact StoryView

Showed activation via campaign page doubled order likelihood; proposed UX entry points.

Product AnalyticsExperiment Design
First-session → Retention MappingView

Linked first-session screens/modals to return rates; informed onboarding tweaks.

CohortsFunnelDuckDB
Bigram → Mini-TransformerView

Built teaching models in PyTorch to internalize attention and generation.

PyTorchNLPEducation

Skills

Data & ML
PythonPandasDuckDBSQLPyTorchMatplotlib
Product & Viz
StorytellingCohortsFunnelsA/B BasicsDashboards
Eng Tools
GitJupyterMATLABReact/Tailwind
Languages
English日本語

Let’s connect

I’m returning to the U.S. on Sept 21 and open to research / product analytics roles. Reach out for my full project write-ups or to chat hoops & data.

Email meLinkedInGitHub