Hire Mattan S. - Data Scientist

* Senior IC focused on building and maintaining production-grade machine learning systems for forecasting, pricing, and cost prediction in freight markets. * Led end-to-end development of ML systems for freight forecasting, carrier cost prediction, and automated contract pricing * Built a 45-day freight forecasting model (ARIMA, Gaussian processes, SARIMAX) achieving ~7% MAPE and outperforming prior baselines * Co-developed and productionized a LightGBM-based quantile regression system powering a customer-facing pricing platform used by 20+ enterprise customers * Designed an automated contract pricing framework combining classification and regression models to estimate win probability and optimize bid pricing for large RFPs * Contributed to production training and inference pipelines; maintained and improved reliability of deployed models * Supported product experimentation and evaluation through statistical analysis and A/B test foundations

Skills: Python (Programming Language) · Machine Learning · SQL · Amazon Web Services (AWS)

* Designed and implemented image processing pipeline for the Health Ministry that analyzed pictures of oral lesions and classified them by urgency. Pipeline expected to be used for triage * Developed tools for the Education Ministry that facilitated school reopening during COVID. In particular, I created a dashboard classifying individuals as infected inside or outside the education system, as well as studied the relationship between the size of a study group and the infection rate in the group * Time series analysis to predict number of hospitalizations in Israel during COVID * Classification of participants in job placement programs by success in placement and in integration in workplace, using demographic information and information regarding previous employment * Communicated analyses to top-tier Israeli government officials (Minister of Education, Minister of Science and Technology, and Director General of the Education Ministry)