Where does Sam Steyer work?

Sam Steyer is Founder of Onsite Pro.

Where did Sam Steyer go to school?

Sam Steyer studied at Stanford University (M.S., Computational and Mathematical Engineering); Harvard University (A.B., Applied Mathematics); San Francisco University High School (High School Degree).

Sam Steyer

Founder

Founder at Onsite Pro

San Francisco, California, United States

FoundedOnsite Pro · YC

About

Sam Steyer previously cofounded Greenwork and served as its CEO before transitioning to a data science leadership role at Halcyon. He has held analytics and data science positions across climatetech companies, including as cofounder and head of analytics at Station A.

Founder at Onsite Pro YC S21

Intro paths

Sam went through Y Combinator (Summer 2021) — any YC alum in your network can reach them through the YC community.

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In turn, Sam can intro founders to Onsite Pro's investors below.

Onsite Pro's investors · 1

Y CombinatorSan Francisco · $500K checks · since 2021

Co-founders at Onsite Pro

Gautam JayaramanFounder

Experience

HalcyonHead of Productcurrent2026 — presentSan Francisco, California, United States
HalcyonHead of Data Science2024 — 2026San Francisco, California, United States
GreenworkCo-Founder and Advisor2023 — 2025San Francisco, California, United States
GreenworkCo-Founder and CEO2020 — 2023San Francisco, CA
Y CombinatorBatch Member2021San Francisco, California, United States
Tom Steyer 2020Surrogate & Family Liaison2019 — 2020San Francisco, CA
Station ACo-Founder & Head of Analytics2017 — 2019San Francisco, CA
AutoGrid SystemsSummer Intern - Analytics2014Redwood City, CA
The 2Seeds NetworkProject Coordinator2012 — 2013Dar es Salaam, Tanzania
Advanced Energy Economy (AEE)Analyst2011 — 2012San Francisco, CA
J.P. MorganSummer Analyst2010New York, NY

Skills & more

Large Language Models (LLM)5Data Analysis25Cleantech29Renewable Energy10Machine Learning3Energy Policy19Financial Modeling8Computational Mathematics4Time Series Analysis3Clean Energy Technologies7Vim2Graph Theory1

+12 more

Go (Programming Language)React.jsPythonJavaScriptSQLHTMLCSSAmazon Web Services (AWS)C++GitPostgreSQLGitHub

Languages English · Spanish (Intermediate) · Swahili (Not really anymore)

OSHA 10 Hour Outreach Training Program - Construction — OSHA Safety Training Institute
Emergency Medical Technician (EMT) — National Registry of Emergency Medical Technicians

From Sam's professional profile.

Frequently asked questions

Who is Sam Steyer?: Sam Steyer previously cofounded Greenwork and served as its CEO before transitioning to a data science leadership role at Halcyon. He has held analytics and data science positions across climatetech companies, including as cofounder and head of analytics at Station A.
Where does Sam Steyer work?: Sam Steyer is Founder of Onsite Pro.
What companies did Sam Steyer found?: Sam Steyer founded Onsite Pro.
Where did Sam Steyer go to school?: Sam Steyer studied at Stanford University (M.S., Computational and Mathematical Engineering); Harvard University (A.B., Applied Mathematics); San Francisco University High School (High School Degree).