Walter Ullon

ML Engineering · Data · AI

Walter
Ullon

I build the infrastructure layer between raw data and production decisions — ML platforms, forecasting systems, and the AI-native tooling that helps engineers understand what they've shipped.

Current Role
Staff Data Scientist
Polly.io · 2024 – Present
Education
B.S. Applied Mathematics
Montclair State University
Published researcher — IJCD
Location
Pennsylvania
Experience
2024
Staff Data Scientist
Polly.io

Five-module loan volume forecasting framework, Bayesian pull-through analysis, three-tier LLM classification system, and a six-figure infrastructure cost reduction program.

2022
Data Science Product Manager
EZOPS

Led product strategy for the data science platform. Roadmap ownership, discovery cycles, and stakeholder alignment across the DS product surface.

2017
Data Scientist
EZOPS

ML models for client behavior analysis and record deduplication. Grew into ML platform work — experiment tracking, feature engineering, model monitoring.

2013
B.S. Applied Mathematics
Montclair State University

Top Graduating Senior. Researched epidemic early warning signals — published in the International Journal of Chaos and Dynamics.

Technical Stack
ML & Forecasting
XGBoost LightGBM MLflow Optuna SHAP PyMC NLP Anomaly Detection
Data Platform
Python SQL PySpark Databricks dbt Delta Lake Redshift FinOps
AI-Native Tooling
Claude Code MCP Servers AI Agents LLM Orchestration Knowledge Graphs
Software & Delivery
Pydantic SQLAlchemy pytest Streamlit Roadmap Ownership