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CrowdFlower Team

Our team is the best of the best – with expertise in search relevance, content moderation, business data verification/correction, and more.

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Meet the foremost experts in crowdsourcing.

Lukas Biewald

Lukas Biewald

FOUNDER & CEO

Lukas co-founded CrowdFlower. He has 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 graduated from Stanford University with a BS in Mathematics and an MS in Computer Science. Lukas is also an expert-level Go player.

Chris Van Pelt

Chris Van Pelt

FOUNDER & CTO

Chris co-founded CrowdFlower. He was previously a technical 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, and pours his diverse background into his role as Chief Technology Officer. 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.

Vikram Kumar

Vikram Kumar

VP OF FINANCE

Vikram leads Finance, Business Operations, and Administration at CrowdFlower. Prior to joining, he led FP&A at several startups including oDesk (now Elance-oDesk), Adap.tv (now part of AOL), and Chegg (now public). Before venturing into startups, Vikram was a management consultant at McKinsey & Company, where he worked with a number of Fortune 500 technology companies. Vikram graduated from UC Berkeley with degrees in Computer Science and Business Administration. Outside of work, he’s an avid tennis player (rated 5.0 by USTA). 

Renette Youssef

Renette Youssef

VP OF MARKETING

Renette joined CrowdFlower with more than 16 years of global (Asia Pacific, Europe and the U.S.) experience in the software/high-tech industry specializing in helping startups grow and build marketing organizations from the ground up. She is passionate about highly targeted lead generation, working with sales teams to deliver revenue, disrupt markets and build brand awareness via messaging, positioning, PR, social media and tactical marketing campaigns. Renette is a self-proclaimed marketing geek, foodie, coffee snob, lover of fashion, and fitness fanatic. 

Jeff Auston

Jeff Auston

VP OF ENGINEERING

Jeff is a startup veteran and has more than 20 years of technology and engineering delivery experience. Before to joining CrowdFlower, Jeff was CTO of a mobile and cloud sales platform, and prior to that he led engineering teams at Zinio, ModCloth and Copart. Jeff has a BS in Aeronautical Engineering from the University of California, Davis, and an MS in Mechanical Engineering from Pennsylvania State University. Jeff is what you would call a “VitaMix enthusiast” – no doubt those delicious green drinks help him keep up with his five sons and daughters. He's planning an epic journey to the top of Mt. Kilimanjaro before 2016.

Tatiana Josephy

Tatiana Josephy

VP OF PRODUCT

Before joining CrowdFlower, Tatiana founded and ran a mobile app company with hundreds of thousands of users, and led Marketing and User Experience at DonorsChoose.org. As VP of Product, Tatiana ensures CrowdFlower delivers the highest impact development for the job creation platform and quality control mechanisms. She graduated from Princeton University with a degree in public policy. Tatiana enjoys Bughouse Chess, a particular style of the game played by Product and Engineering at CrowdFlower.


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