Ethereum Foundation Key Researcher Josh Stark Departs After Five Years

It was announced on Thursday that Josh Stark, a prominent researcher and project manager at the Ethereum Foundation, would be leaving the organization after five years. The foundation is a non-profit that oversees the development of the Ethereum ecosystem.

In a post on X, Stark said that he had no plans for the future but did not specify why he was leaving. On the contrary, he plans to spend time alone with his loved ones.

Stark stated:

Ecosystem’s Long-term Trajectory

His name appears on an organizational chart with three others under the title “Management” that demonstrates how almost every employee of the Foundation reports to him.

With Stark’s resignation, the Ethereum Foundation has had its most high-profile departure since 2025, when Vitalik Buterin, co-founder of Ethereum, announced new leadership and a vision for the organization. Trent Van Epps, who was also a contributor to the Foundation, announced his departure last week the day before.

The Ethereum community was becoming more critical of the ecosystem’s long-term trajectory in January 2025, prompting co-founder Vitalik Buterin to propose massive reforms to the Ethereum Foundation.

Buterin outlined a number of objectives for the reforms, including the recruitment of “fresh” talent, enhanced decentralization, and the development of the protocol to facilitate better transaction throughput and speeds. Buterin stressed that the reorganized Ethereum Foundation will avoid representing special interests, lobbying US officials, or becoming involved in ideological disagreements.

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