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I have 15 years of experience in data science and analysis. I have built many machine-learning products in a variety of industries, including one product that generated millions of dollars of revenue. I have also created analyses and predictive simulations for senior and executive leaders that saved tens of millions of dollars.…

Christopher Kish

Data Scientist, AI Engineer, Developer, +2

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I have 15 years of experience in data science and analysis. I have built many machine-learning products in a variety of industries, including one product that generated millions of dollars of revenue. I have also created analyses and predictive simulations for senior and executive leaders that saved tens of millions of dollars.…

Available to hire

I have 15 years of experience in data science and analysis. I have built many machine-learning products in a variety of industries, including one product that generated millions of dollars of revenue. I have also created analyses and predictive simulations for senior and executive leaders that saved tens of millions of dollars.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

English

Fluent

Work Experience

Chief Data Scientist at Reef Media

August 1, 2025 - Present

Created an LLM & RAG system to verify claims with the entire Wikipedia dump using GPT and a vector database.

Data Scientist Professional at RSI

August 1, 2023 - September 1, 2024

Established ML-team product infrastructure & processes with Databricks, Azure, and Azure AI Search; built a fuzzy database record-matching pipeline using Spark, Databricks, a language model, a vector database, and a PowerBI monitoring dashboard.

Data Science Consultant at C8 Sciences

June 1, 2022 - July 1, 2022

Designed cognitive ability models for users of games using Bayesian statistics and machine learning.

Senior Data Scientist, Recommendations at SoundCloud

March 1, 2021 - May 1, 2022

Created the company's first ML Ops system to train and deploy a real-time model for personalized song recommendations using an in-memory vector database, Vertex, MLFlow, and Airflow; built a feature store, trained models, and supported AB-testing analyses.

Lead Data Scientist at HeyJobs

December 1, 2016 - November 1, 2020

Invented and programmed a production pipeline of multiple ML and Bayesian models to optimize advertising campaigns for tens of thousands of individual jobs; built a Spark/TensorFlow-based recommender; integrated a language-model-assisted audience optimization for Facebook ads; created a job-attribute classifier; designed a data warehouse and dashboards for AB experiments.

Senior Business Intelligence Manager at Rocket Internet

February 1, 2015 - December 1, 2016

Built media mix valuation, customer lifetime value, and survival models; extracted insights from free-text survey responses with NLP tools; programmed real-time bidding segments with Spark; improved churn and created dashboards and ETL pipelines.

Data Analyst at Knewton

June 1, 2013 - September 1, 2014

Led experimentation advisory group; modeled textbook quality from student responses; built automated dashboards and data services; implemented ETL pipelines to populate a data warehouse; wrote MapReduce, Python, and SQL programs.

Consultant at PA Consulting

July 1, 2008 - June 1, 2013

Advised team-leads on multi-billion dollar projects via data analyses, simulations, metrics, and risk forecasting; contributed to executive-level deliverables and strategic guidance.