Management Team
Nat
Nathaniel Turner / Co-Founder
Before co-founding Flatiron, Nat was Co-Founder and CEO of Invite Media, an advertising technology company based in NYC. Invite Media built the industry's first enterprise advertising platform for buying and optimizing online media in real-time. Invite Media was acquired by Google in 2010.

Prior to Invite Media, Nat started numerous internet companies and also worked at Say Media and First Round Capital. An active angel investor, Nat has invested in over 30 technology startups throughout the country, including Bell Biosystems, Breakthrough, Care at Hand, DocPhin, Doctor Evidence, Genomera, Meddik, Oscar, and Predilytics.

Nat earned a Bachelor of Science degree cum laude in Economics, Entrepreneurship and Marketing from The Wharton School of the University of Pennsylvania.
Zach
Zachary Weinberg / Co-Founder
Before co-founding Flatiron, Zach was Co-Founder, President & COO of Invite Media, an advertising technology company based in NYC. Invite Media built the industry's first enterprise advertising platform for buying and optimizing online media in real-time. Invite Media was acquired by Google in 2010.

Prior to Invite Media, Zach co-founded EatNow.com which was privately acquired. An active angel investor, Zach has invested in over 30 technology startups throughout the country, including Bell Biosystems, Breakthrough.com, Care at Hand, DocPhin, Doctor Evidence, Genomera, Meddik, Oscar, and Predilytics.

Zach studied economics and entrepreneurship at The Wharton School at the University of Pennsylvania.
Gil
Gil Shklarski, PhD / VP of Technology
Gil is in charge of developing the core systems and technologies that are powering the Flatiron platform. Prior to joining Flatiron, Gil built web scale data processing systems at Facebook and Microsoft. Prior to that experience, Gil worked on high performance mission critical systems as a researcher, consultant, and R&D group manager in elite technology units in the Israeli Defense Ministry.

Gil holds a Ph.D. in computer science in the field of scientific computing from Tel-Aviv University.
Leo
Leonardo Nicacio, MD / VP of Oncology
Leo is an oncologist responsible for delivering impactful applications and services leveraging big data to Flatiron's customers. Leo interfaces with various stakeholders and designs collaborative solutions to solve unique oncology issues. In parallel to his work at Flatiron, Leo holds responsibilities as Clinical Lead of Project DataSphere, an initiative from the CEO Roundtable on Cancer. Before his tenure at Flatiron, Leo was Senior Medical Director, Oncology, at Sanofi, responsible for activities related to medical affairs, business development, regulatory, and clinical development. Leo also has a special interest in different strategies and business models for the pharmaceutical industry and the biotech sector.

Leo holds an MD degree and has held other previous positions in the biotech sector and as an advisor for multiple pharmaceutical companies.
Geoff
Geoffrey Calkins / Director of Product Management
Geoff is in charge of building the products that comprise the Flatiron platform. Prior to joining Flatiron, Geoff built and managed oncology research databases at Massachusetts General Hospital. Before that, he was an Associate Consultant at Bain & Company, where he advised pharmaceutical, biotech, and technology companies on product strategy.

Geoff studied biomedical engineering at Yale University.