Senior Protocol Security Researcher (Ethereum)

Protocol Security Researcher

Company

Ethereum Foundation

Conditions

6 days agoSenior Europe; Global Remote Full Time Cybersecurity Jobs by Ethereum Foundation

Ethereum Foundation Ethereum Foundation supports Ethereum ecosystem development through grants, research funding, and community programs without controlling the protocol. 0 current maintainers 0 active leads 1 lead step-down 1 early lead departureTeam intelligence Maintainer signals as of 8/14/2026 Switzerland Projects Ecosystem Support Program Venture Fund Devcon Events & Conferences Next Billion Fellowship Program Education and Training Ethereum Protocol Fellowship Education and Training E Ethereum Bug Bounty Program About Ethereum Foundation Ethereum Foundation is a non-profit organization supporting Ethereum protocol development and ecosystem growth through funding, coordination, and advocacy. The foundation allocates resources to critical projects, provides grants through the Ecosystem Support Program, organizes annual Devcon conferences, and runs fellowship programs. Operating with a philosophy of subtraction, the foundation distributes opportunities across the community rather than centralizing control. View jobs by Ethereum Foundation

Skills

Application Security C# Consensus Ethereum Execution Fuzzing Go Java Networking Nim Protocol Python Research Rust Security Specification Testing Tooling Vulnerability

Candidate Availability

Remote · Europe · Required Remote · Worldwide · Required Required and preferred rules are kept separate and reflect the wording in the original posting.

About the Role

You will research and identify security issues across Ethereum protocol implementations before they reach mainnet. You will review upcoming hardforks and protocol changes, perform manual security reviews, build and improve fuzzers and security tooling, support audits, coordinate responsible disclosure, and collaborate with protocol specialists and implementers.

Requirements

• Deep familiarity with the Ethereum execution layer or consensus layer
• Deep familiarity with EL or CL specifications
• Experience implementing or reviewing protocol changes
• Strong understanding of Ethereum networking, consensus, or execution internals
• Experience with one or more of AI-assisted security workflows, protocol security research, fuzzing, vulnerability research, manual application security review, or security tooling
• Knowledge of Go, Rust, Java, C#, Nim, or Python

Responsibilities

• Conduct AI-assisted security research and automated bug discovery
• Review upcoming hardforks
• Find vulnerabilities across Ethereum protocol implementations
• Build and improve fuzzers
• Improve automation and security tooling
• Perform manual security reviews of Ethereum protocol changes
• Coordinate responsible disclosure
• Support external audits and audit competitions

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