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Summer O’Brien

A lifelong gamer with a career dedicated to driving scalable, cross-product solutions, Summer leads the XDev Workforce at Riot Games. She steers the long-term vision and global operations for Riot’s external development ecosystem. A builder at heart, Summer originally tackled the XDev problem space to champion both internal and external developer experiences—establishing the foundational strategy, building the team from scratch, and launching core infrastructure. Today, she focuses on macro-level steering, cross-functional executive alignment, and developing data-driven frameworks to turn operational ambiguity into seamless, developer-first solutions.

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