Our Company
Machine learning is transforming our world, delivering insights from immense quantities of data to dramatically improve human productivity and drive groundbreaking scientific discovery. Our mission is to build the best software tools for deep learning practitioners.

Why machine learning tools?

Tools are high leverage

Building one great tool can make an entire industry work more efficiently. Our software has the potential to improve workflows across millions of machine learning projects.

Tools democratize

The world needs more people using machine learning, and high quality tools can lower the barrier to entry. You shouldn't need a PhD to make a useful model.

Tools are fun

There is nothing more satisfying than painting with a good paint brush, preparing food with a sharp knife or writing code in a well-configured text editor. We want to make building machine learning models a pleasure.

Lukas Biewald

Co-founder & CEO

Lukas is co-founder and CEO of Weights & BIases. He was previously a co-founder for Figure Eight, a human in the loop ai training platform and worked as a Senior Scientist and Manager within the Ranking and Management Team at Powerset, Inc., a natural language search technology company later acquired by Microsoft, and also led the Search Relevance Team for Yahoo, Japan! He combines his passion for AI, Robotics and Computer Science in his robotics and AI lab in the basement of his outer mission house. On any given day, you can see Lukas tinkering with his inventions, programing facial recognition drones and recording youtube how to videos on how to build robots and build ai algorithms. He graduated from Stanford University with a BS in Mathematics and an MS in Computer Science. Lukas is also an expert-level Go player.

Shawn Lewis

Co-founder & CTO

Shawn is co-founder at Weights & Biases.  He was previously the founder of Beep, where he designed wireless electronics and brought them to market. He started his career as a software engineer at Google where he was a member of the Platforms team working on everything from operating systems to data science.  Shawn loves all aspects building useful products, and is especially excited about contributing toward the potential inception of strong AI. He graduated with a Computer Engineering degree from Virginia Tech.

Chris Van Pelt


Chris is a technical co-founder of Weights & Biases. He was previously a technical co-founder for Figure Eight, a human in the loop ai training platform and a product manager at Powerset, Inc., a natural language search technology company later acquired by Microsoft. Chris has worked as a studio artist, computer scientist, and web engineer. He combines deep design insight with crisp, minimalist coding abilities that enables him to produce anything — soup-to-nuts applications — sometimes within minutes. Chris studied both art and computer science at Hope College.

Adrian Bauer


Adrian is the first engineer at Weights & Biases.  He was the CTO of Mod9 Technologies where he trained and adapted speech recognition models and systematized model deployment, led data efforts at Quettra (acquired by SimilarWeb), and a software engineer at Google. Adrian loves rock climbing, early-stage startups, and voice interfaces. He graduated with a BS in Computer Science from the University of Waterloo.

Arsen Ari Kalfayan

Community & Business

Ari is the first business and community lead at Weights and Biases. He was previously the founder of GoBoldly which was one of the first experience marketplaces on the market and Startup & Tech Mixer, which held tech conferences centered around purpose driven entrepreneurship. Previously, Ari worked with Lukas Biewald and Chris Van Pelt to start Figure Eight (formerly Crowdflower), a human in the loop training platform. He loves rolling up his sleeves and building early stage startups that solve important market problems. Ari believes in building purpose driven and values based startup organizations. Ari has a passion for big wave surfing and is currently training to surf Mavericks in the upcoming surf season.  He graduated with a BA in Political Science and Communications from University of California, Davis.