Joseph Lubin

Joseph Lubin is a co-founder of Ethereum and the founder and CEO of Consensys — the largest Ethereum-focused software company in the world. Lubin, a Princeton-trained engineer, was part of the original Ethereum founding group in 2013–2014 and has since built Consensys into a company that develops MetaMask, Infura, Linea (an Ethereum Layer 2), and other developer infrastructure that underlies a significant portion of the Ethereum ecosystem. As of August 2026, Lubin also serves as Chairman of SharpLink Gaming, which has adopted an Ethereum treasury strategy.

Key distinctions: Lubin is CEO of Consensys (a private software company), not CEO or owner of Ethereum (a decentralized network). Consensys is separate from the Ethereum Foundation (a separate non-profit). MetaMask was developed within the Consensys ecosystem; Lubin is not its original creator. SharpLink's ETH treasury is a corporate asset and should not be treated as Lubin's personal holdings.

Education & Early Career

Lubin holds degrees from Princeton University in electrical engineering and computer science. After Princeton, he held roles in technology and finance; publicly reported positions include work at Goldman Sachs in the technology division. Specific dates and Goldman Sachs role titles were not confirmed from primary Goldman Sachs or Lubin first-party sources for this profile; reported figures from secondary sources suggest involvement in the late 1990s. Unverified specifics are noted as such.

Ethereum Co-Founder (2013–2014)

Lubin joined the Ethereum founding group in Zug, Switzerland (EthSuisse) in 2013 alongside Vitalik Buterin, Gavin Wood, Anthony Di Iorio, Charles Hoskinson, Mihai Alisie, Amir Chetrit, and Jeffrey Wilcke. His formal founding contribution included financial support for the early project through the Ethereum presale and participation in the founding structure. He is not credited as the author of the Ethereum whitepaper (Vitalik Buterin) or Yellow Paper (Gavin Wood).

Founding Consensys (2014)

Lubin founded Consensys in 2014 as a venture production studio to build Ethereum-based applications and infrastructure. Over time, Consensys evolved from a studio model into a focused software company. Major products include:

• MetaMask: The most widely used self-custodial Ethereum browser extension wallet. MetaMask was created by Aaron Davis and Dan Finlay; it was developed within the Consensys ecosystem. It is a distinct product from Consensys the company, though organizationally housed within it.
• Infura: Developer API infrastructure providing managed Ethereum and IPFS node access, widely used by dApps. Originally acquired/incubated within Consensys.
• Linea: An Ethereum Layer 2 zkEVM rollup developed by Consensys. Its current decentralization status and roadmap as of August 2026 should be verified from linea.build directly.
• Diligence: Consensys' smart contract security auditing service.

SharpLink & Ethereum Treasury

Lubin serves as Chairman of SharpLink Gaming, Inc. (NASDAQ: SBET), which has adopted a strategy of holding Ethereum on its corporate balance sheet. This is a corporate treasury strategy for SharpLink; it should not be conflated with Lubin's personal ETH holdings, which are not publicly disclosed for this profile.

Consensys Funding & Corporate Evolution

Consensys has raised multiple funding rounds from institutional investors including HSBC, ParaFi Capital, and others. It underwent restructurings that resulted in the separation of its software business. Exact current entity naming ("Consensys AG," "Consensys Software Inc.," or otherwise) and valuation figures should be verified from current Consensys disclosures rather than historical reports.

Regulation & Legal

In May 2024, Consensys filed a lawsuit against the SEC, arguing that Ethereum is not a security and the SEC lacks jurisdiction over MetaMask. The SEC's position and any formal proceedings should be verified from current SEC filings and court records; do not treat the filing as a final adjudication either way.

What Is Joseph Lubin Working on Now? (August 2026)

• Founder & CEO, Consensys (Current) — MetaMask, Infura, Linea, Diligence.
• Chairman, SharpLink (Current — ETH treasury strategy, separate from personal holdings).
• Ethereum co-founder influence (Ongoing — as a major stakeholder and advocate, not a formal Ethereum role).
• Ethereum CTO/EF roles — None; he is not affiliated with the Ethereum Foundation in a formal role.

Founder Snapshot

Key Contributions

Sources & Verification

Sources: consensys.io/about/joseph-lubin · consensys.io · metamask.io · infura.io · linea.build · ethereum.org history. Information last checked: August 2026.