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| Job Position | Company | Posted | Location | Salary | Tags |
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Protocol Prototyping Intern
Remote, Boulder, Berlin
Ethereum Foundation – Internship /
Intern /
Hybrid
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About the Ethereum Foundation
The Ethereum Foundation (EF) is a global non-profit organization dedicated to supporting Ethereum and related technologies. Our mission is to do what is best for Ethereum’s long-term success. Our role is to allocate resources to critical projects, to be a valued voice within the Ethereum ecosystem, and to advocate for Ethereum to the outside world.
EF Internship
As part of our mission to advance blockchain systems, interns will contribute to bleeding edge research that spans computer science, distributed systems, crypto-economics, and mechanism design. This program offers a unique opportunity to work closely with Ethereum Foundation researchers, their collaborators, and other contributors across the ecosystem, tackling both foundational and applied research challenges. Interns will also have opportunities to share their findings through ethresear.ch, academic publications, or conference submissions helping shape the future of Ethereum.
Interns can choose to work remotely but are encouraged to work out of an EF office (likely Berlin, Germany). In addition, interns will be invited for an in-person cohort meetup in the summer.
The duration of the internship is 12 weeks during summer 2026.
Protocol Prototyping team description
The Protocol Prototyping team at the Ethereum Foundation builds end-to-end implementations of new ideas for Ethereum’s core protocol. By turning concepts into working prototypes, the team explores how potential upgrades behave in practice, helping the community move beyond theory and speculation. Their work tests assumptions, quantifies trade-offs, and uncovers risks that may not be apparent from research alone.
These prototypes serve as a proving ground for innovation, offering concrete insights that feed directly into Ethereum’s specifications, client implementations, and long-term roadmap. By reducing uncertainty and surfacing challenges early, Protocol Prototyping helps de-risk proposed changes and ensures that Ethereum evolves in a safe, informed, and sustainable way.
Resources:
Website: https://ethereum.github.io/protocol-prototyping-site/
Post: Toward Semantic Block Chunking
Post: Block-level Access Lists (bonus: diet BAL)
Post: NYE Proofing Your Specifications
More on the EF Protocol cluster: https://protocol.ethereum.foundation/
Skills
- Strong grasp of Ethereum EL/CL, block lifecycle, and Engine API
- Proficiency in Go or Rust; Python for tooling and data scripts
- Linux: profiling/debugging (pprof/perf), logs, containers, CI basics
- Data structures & proofs: Merkle/SSZ, inclusion proofs, hashes/encodings
Responsibilities
- Conduct original research in areas relevant to Ethereum and decentralized technologies.
- Collaborate with Ethereum Foundation researchers and contributors to address pressing technical and conceptual challenges.
- Contribute to public-facing materials, such as blog posts, white papers, and technical reports, to share research outcomes.
- Engage with the broader research community through discussions, seminars, and collaborations.
Qualifications
- Current university enrollment studying a relevant field such as computer science, cryptography, mathematics, or economics. Very recent graduates (~1 year) may also be considered.
- Demonstrated interest in Ethereum, blockchains, and decentralized technologies.
$8,000 - $8,000 a month
Important dates:
This application closes on Dec 1st, 2025. Applicants will receive decisions by January 30th, 2026.
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How to get a web3 internship?
There are a few steps you can take to increase your chances of getting a web3 internship
- Start by building your skills and knowledge. This could include taking courses on web development, blockchain technology, and web3 technologies.
- Make sure your resume and online profiles showcase your skills and experience, including any relevant projects you've worked on.
- Network with people in the web3 industry and attend relevant conferences and events to meet potential employers and learn about opportunities.
- Apply for internships at web3 companies or organizations that align with your interests and goals. Be sure to tailor your application to the specific internship and highlight your relevant skills and experience.
- Be persistent and keep applying for internships, even if you don't get accepted right away. It can take time to find the right fit, so be patient and keep working on improving your skills and networking with potential employers.
- If you were rejected don't get disencouraged! Ask for honest feedback so you can improve the next time.