Web3 React Jobs in Berlin, Germany
















Job Title | Company Name | Salary | Location | Tags | Posted | |
---|---|---|---|---|---|---|
Ethereum Foundation | 50k-100k/year | RemoteWeb3DeveloperFull Time | 2d | |||
Past and filled jobs: | ||||||
Ethereum Foundation | 📍 Berlin | Web3RemoteNon TechCommunity |

Developer – Developer Experience (Account Abstraction & Interop)
at Ethereum Foundation
Sep 09, 2025

About the Ethereum FoundationThe Ethereum Foundation (EF) is a global non-profit organization dedicated to helping Ethereum become an open, decentralized infrastructure for the world. We allocate resources to critical projects when needed and step back when others can take the lead.Role summaryWe 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 teamThe 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 responsibilitiesYour 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.
Listed in: Cryptocurrency Jobs, Remote Crypto Jobs, Web3 Crypto Jobs, Developer Web3 Jobs, Full Time Crypto Jobs, TypeScript Crypto Jobs, Rust Crypto Jobs, React Web3 Jobs, JavaScript Crypto Jobs, Swift Crypto Jobs, Solidity Web3 Jobs, Contract Web3 Jobs, Open Source Web3 Jobs, Smart Contract Crypto Jobs, Ethereum Web3 Jobs, Node.js Crypto Jobs, Kotlin Crypto Jobs.


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Co-Founder and COOStickies
We hired our Head of Social through CryptoJobsList and received an impressive talent pool of over 80 passionate individuals interested in working in the crypto space. After interviewing 10 candidates, we found the perfect fit for our team. The platform was easy to use, and the team was incredibly responsive and helpful throughout the hiring process. As a consumer web3 startup, we highly recommend CryptoJobsList for any company looking to hire top talent in the crypto industry.


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We've had a first round of interviews with 5+ applicants from CryptoJobsList and, like last time, it has been our best source of leads. We are still in the process of doing a second round of interviews and anticipate closing the role in the next week or two.


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At P2P.org, we recognize the importance of connecting talented individuals with exciting opportunities in the dynamic and ever-evolving world of cryptocurrency and blockchain. As a company at the forefront of the blockchain and crypto revolution, we know the importance of connecting with top talent in the industry. That's why we consider CryptoJobsList to be an invaluable resource for finding and attracting the best and brightest minds in this field. It has proven to be a valuable and effective tool in our hiring efforts and we are grateful for the opportunities it has presented us.


Co-Founder & CEOWalletChat
We have already made several hires via CryptoJobsList. So far, we are happy with each one of them. CJL offers an easy to use platform and the candidates we receive are generally well versed with and a good fit for the web3 space — which is a challenge when hiring via traditional platforms. On top of this, the team has been super responsive whenever we've tried reaching out and we feel like we are talking to a friend. Excited to keep seeing CJL grow together with us, as we deliver the future of wallet-to-wallet messaging!


Founder & COOAavegotchi | Pixelcraft Studios
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Chief of StaffUMA Project
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Co-founder & HostEpicenter Podcast
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We received over a dozen high-quality job applications in less than a week to this post. It has been very effective and would highly recommend. Service is excellent, UX simple. Thanks CryptoJobsList!


General ManagerMeld Gold
Great experience. We have had excellent candidates via Raman and the CryptoJobsList platform. Will definitely use again as we build out other components of the team!


Communications LeadKleros
CryptoJobsList drives more qualified leads than AngelList!


Cofounder & COOFleek
We've gotten great leads for developers from CryptoJobsList. I'm definitely a continuous user going forward!


Founder & CEODataStreamX
The quality of the candidates are by far more relevant and experienced than on other boards. They are in the crypto space and have the past experience to hit the ground running.


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Each time their services have been nothing short of exceptional. The platform has consistently provided us with a large pool of qualified candidates for various roles within our company. The user-friendly interface and the efficient recruitment process has made it easy for us to fill positions quickly and effectively. We are grateful for the help and support provided by CJL and highly recommend their services to anyone looking to fill roles in the crypto industry.

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We posted on CryptoJobsList looking for marketing help with community engagement, digital marketing and social media and found two highly qualified candidates within days! We interviewed and hired them within three weeks.