Applied Scientist
September 2025 – Present
Nashville, Tennessee
Founding member of the Machine Learning Team. I design models and build the training and serving systems behind re-commerce applications.
- Recommendation systems: Designed graph-based retrieval models and built their training and serving stack. The initial sales-based release increased sales per exposed buyer by 12.62% and checkout-user rate by 3.21% in its experiment. Extended the system with neural ranking, bid-history signals, and cold-start handling. The subsequent version has a separate evaluation.
- Foundation models for re-commerce: Developing a re-commerce foundation model, beginning with auction value prediction. Fine-tuned a pretrained language model for regression, compared it with specialist models, and implemented GPU serving with vLLM. Broader applications are ongoing research.
- ML infrastructure: Built a shared platform on AWS and Kubernetes to automate training workflows and model releases, using Airflow, Terraform, and Argo CD. Added monitoring for model-serving services. Read the platform case study.
Earlier work includes an edge-vision presort system integrating cameras, Jetson inference, and operator workflows.