Chris Maddern in

Chris Maddern

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Chief Technology Officer at OpenSea
📍 New York, New York, United States

Chris Maddern is the CTO of OpenSea, leveraging a deep background in mobile technology and Web3. He has a track record of building successful ventures, having co-founded Rally (acquired by OpenSea), Button, and Floor, and previously led mobile at Venmo. He holds a BSc from the University of Bristol.

Chris is a co-founder of LinksDAO, a project aiming to tokenize sports and leisure memberships by purchasing a physical golf course. This venture highlights his interest in the intersection of Web3, community building, and real-world assets. He also serves on the board of crypto research outlet, The Block.

Unique fact: Chris holds a patent for a system facilitating deep linking, which allows seamless switching between mobile apps to perform specific actions.

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Experience
14 Years
Current Role
Chief Technology Officer
Job Level
Leadership
Location
New York, New York, United States
Personality Overview

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Communication Style
Decision Approach
Work Preference

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Priorities

Topics Chris cares about

Web3 Mobile Products
Stated that "Web3 is the future of the internet and there are no great mobile products," and has focused his career on building mobile-first platforms like Venmo, Button, and Rally.
NFT Accessibility
His mission with his company Floor was explicitly to make NFTs "understandable & accessible" to a mainstream audience, focusing on a mobile-first experience.
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Career

Work history

6-2025
Chief Technology Officer
OpenSea
1-2022 - 7-2025
Co-Founder & CEO
Rally
8-2019 - 5-2022
Chief Innovation Officer
Button
5-2014 - 8-2019
Co-Founder & Chief Product Officer
Button
3-2013 - 5-2014
Head of Mobile
Venmo
In the press

Media appearances

This Week in Web3 and NFTs: OpenSea acquires Rally, Goblintown, Azuki, & more. Featured in OpenSea Blog
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OpenSea Acquires Rally as It Continues to Pivot to Token Trading. Featured in CoinDesk
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Education
BSc
University of Bristol
Social presence
in
Behavioral profile

DISC profile (public)

DISC behavioral profile

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