Optimism, an Andreessen Horowitz-backed blockchain startup, has snagged Ryan Wyatt, a former head of gaming at YouTube, as its chief growth officer.

Wyatt — who has a long history in e-sports including his eight years at YouTube as its global head of gaming — most recently left another blockchain project, Polygon Labs, in July. He will lead an Optimism team focused on the startup’s efforts to grow its business through partnerships and marketing.