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Leadership Team

Comet’s leadership team combines decades of experience at innovative organizations, including Amazon Web Services (AWS), Demandbase, GitLab, Google, Teradata, Oracle, VMware, Wix, and Yale University.

Gideon Mendels | Comet ML

Gideon Mendels

CEO and Co-founder
Gideon is a computer scientist and ML practitioner. Previously, Gideon founded GroupWize, where his team trained and deployed more than 50 natural language processing (NLP) models in 15 languages. He also trained and put into production deep learning classifiers for 500 languages at Columbia University jointly with IBM research. Additionally he worked on hate speech and deception detection at Google. He holds his bachelor’s and master’s degrees from Columbia University in New York.
Nimrod | Comet ML

Nimrod Lahav

CTO and Co-founder
Nimrod is a computer scientist and software engineer. He held leadership and engineering roles at Wix, VMware and Amdocs. He later co-founded GroupWize, whose team trained and deployed more than 50 natural language processing (NLP) models in 15 languages to analyze chat messages. He holds a bachelor’s degree from the Academic College of Tel Aviv, Yaffo (MTA).

John Fleisher

VP, Sales
John is a builder and leader of technology sales teams. He has led high-performance sales teams at OutSystems, Optimizely, Demandbase, and Responsys, where he built and scaled large organizations from the ground up. He has a bachelor’s degree from the University of Colorado in Boulder and a master’s degree from the University of San Francisco.
Niko | Comet ML

Niko Laskaris

VP, Strategic Projects
Niko is a researcher and entrepreneur. Previously, Niko worked as a research scientist at Yale University, studying climate change and complex systems. He also founded and built an educational consulting company based in Vermont, Long Trail Prep. Niko holds a bachelor’s degree from Yale University in Connecticut.
Joe Scheuermann | Comet ML

Joe Scheuermann

VP, Marketing
Joe is a builder and leader of marketing teams for complex technology. He has held leadership roles at companies including Amazon Web Services (AWS), GitLab, Teradata, and Trifacta. He served as an advisor on Y Combinator’s YC Continuity, an investment fund for founders scaling their companies; and as an executive board member for the Growth Ops Community, a network that helps organizations drive business growth. He has a bachelor’s degree from the University of California, Los Angeles.
Jacques Verre | Comet ML

Jacques Verré

Head of Product
Jacques is a data scientist and ML practitioner. He served in data science roles at Triptease, Worldpay, and Brightmile. He founded Stakion, a platform Comet later acquired, which monitored machine learning models in production for breaking changes and concept drift. He holds his master’s degree from Imperial College in London, and his engineering degree from CentraleSupélec in île-de-france.
Douglas | Comet ML

Doug Blank, Ph.D.

Head of Research
Doug is a computer scientist, cognitive scientist, ML practitioner, and professor. He has authored many book chapters, articles, and research papers on AI, ML, robotics, and computer science education. He wrote one of the first-ever deep learning systems in Python, called con-x. He is an advocate for open source software and a Distinguished Contributor to the Jupyter Project. He is an Emeritus Professor at Bryn Mawr College, and he has bachelor’s, master’s, and doctoral degrees from Indiana University, Bloomington in Indiana.

Megan Mahowald

Head of Customer Success
Megan leads Comet’s customer success team, which includes technical account managers and support engineers. For a decade, she has managed customer accounts for complex technology, having held customer success roles at HackerOne and Box. She has her bachelor’s degree from Northwestern University.

Yuval Nahon

Head of Engineering
Yuval is a computer scientist, software engineer, and leader of engineering teams for complex technology. He has held leadership roles at NASA, Cisco, CleverDevices, CosmoCom, Nexite, and Vocaltec. He participated in Harvard Business School’s Driving Performance Through Talent Management program. He holds a bachelor’s degree in operational research, statistics, and computer science from Tel Aviv University (TAU).
Shir | Comet ML

Shir Rinot

Head of Operations
Shir is a business operations leader focused on driving global growth. She served in Unit 8200, Israel’s elite military technology unit managing strategic technology projects. She has held technology and management roles in government, law, and industry, serving most recently as director of solutions architecture at Firedome. She holds an LL.B in law and a bachelor's degree in business from Reichman University in Israel and a master of science degree in cybersecurity from Fordham University in New York.
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