Jack Groetzinger
Co-Founder And CEO at Founder Collective
New York, New York, United States
Summary
👤
Senior🎓
Top SchoolJack Groetzinger is a seasoned entrepreneur and tech leader with 14 years of experience co-founding and scaling SeatGeek, where he continues to serve as CEO from New York. He blends product-minded leadership with hands-on engineering, having contributed front-end work to open-source projects like Sixpack—implementing UI, D3 visualizations, and polish that improved A/B testing dashboards. A repeat founder and early operator (Scribnia, Evolving Vox) with consulting roots at Bain, he combines analytical rigor from a Dartmouth economics/math background with a knack for fast product iteration and go-to-market execution. As a founder partner at Founder Collective, he now invests in and mentors startups, bringing practical scaling experience and an uncommon comfort toggling between code, design, and strategy.
14 years of coding experience
4 years of employment as a software developer
Bachelor of Arts Economics modified with Math, Bachelor of Arts Economics modified with Math at Dartmouth CollegeHawken School
Spanish
Github Skills (6)
html10
css10
javascript10
front-end-development10
ui-design10
d3js9
Programming languages (3)
Github contributions (5)
sixpack/sixpack
Jan 2013 - May 2014
Sixpack is a language-agnostic a/b-testing framework
Role in this project:
Front-end Developer
Front-end DeveloperContributions:78 commits, 1 issue in 1 year 4 months
Contributions summary:Jack primarily contributed to the front-end design and layout of the web dashboard. They implemented UI elements, including table designs with specific styling, and integrated a D3.js graph for data visualization. The user also addressed a Chrome CSS bug and improved the overall visual presentation by fine-tuning the CSS and adding features such as color dots.
testing
jack7890/mkdown
Jan 2014 - Nov 2015
Contributions:53 commits, 1 PR, 2 pushes in 1 year 10 months
gistsformattingremarkmarkdown
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.