About the Ethereum Foundation

The Ethereum Foundation (EF) is a global non-profit organization dedicated to supporting Ethereum. Our mission is to ensure the long-term success of Ethereum by allocating resources to critical projects, being a positive voice within the Ethereum ecosystem, and advocating for Ethereum to the outside world.

Role summary

We are looking for a developer to join the Ethereum Foundation’s Account Abstraction & Interop efforts. You will focus on improving the developer experience (DX) for both ERC-4337 and EIL (Ethereum Interoperability Layer), helping developers build, test, and integrate with these protocols.

This role combines hands-on tool development with applied protocol knowledge. You’ll create and maintain frameworks, plugins, and testing environments that make it easier for developers to adopt account abstraction and cross-chain interoperability.

About the team

The Chain & Account Abstraction team works at the cutting edge of Ethereum usability, focused on: • Account Abstraction (ERC-4337) – enabling smart contract wallets and alternative transaction flows: https://erc4337.io • EIL (Ethereum Interoperability Layer) - connecting L1 and L2s.

Key responsibilities

Your mission is to lower the barriers to experimentation and adoption by providing powerful, user-friendly developer tools and testing environments.

Depending on your skills and interests, you will contribute to a subset of the following:

• Build and maintain Foundry, Hardhat, viem, and ethers.js plugins to support ERC-4337: • Local test environments • UserOperation (UserOp) building, encoding/decoding, and error decoding • Develop a gas estimation toolkit: • Per-account and per-paymaster validation gas analysis • Designing, implementing and supporting new integrations with external projects, protocols and developer frameworks • For the new EIL interop protocol, design and maintain a multichain testing framework and documentation • Document your work and collaborate closely with researchers, protocol developers, and ecosystem partners.

Required skills & experience

• Strong experience in Ethereum development tooling (Foundry, Hardhat, viem, ethers.js, or similar). • Solid knowledge of smart contract development (Solidity, contract deployment, testing, debugging). • Strong knowledge of TypeScript, JavaScript, Solidity, familiar with Rust, Go, Node.js, React, Angular, Swift/Kotlin can be a plus. • Familiarity with ERC-4337 and account abstraction concepts. • Comfort with cross-chain or multichain development. • Past contributions to open source Ethereum projects are highly valued. • Excellent communication skills and ability to work in a distributed, asynchronous team. • Curiosity, initiative, and a willingness to keep learning.

Logistics

• Fully remote, full-time position. • Flexible hours, though overlapping with Western Europe time zones is a plus (especially around “Eth o’clock” – 14:00 UTC). • Occasional travel to Ethereum events is encouraged but not required.