Zero Knowledge/Cryptography Auditor

Job Description: Perform security reviews and audits of cryptographic and zero-knowledge systems, including primitives, protocols, zkDSL circuits, and zkVM guest programsAnalyze correctness, soundness, completeness, and potential privacy leakage in ZK programsReview production code used in Ethereum and Aztec ecosystems and help teams identify and remediate vulnerabilitiesCollaborate with teammates to maintain and improve Nethermind's internal blockchain security toolingDesign and implement new security tools for cryptography and ZK systemsStay up to date with emerging ZK constructions, proof systems, and attack vectorsParticipate in client meetings to explain findings, recommend best practices, and support remediation effortsContribute to internal knowledge sharing, research notes, and (optionally) public-facing contentRequirements: 1+ year of experience performing security reviews related to cryptography, zero-knowledge systems, or closely related domainsBachelor's or Master's degree in Computer Science, Cyber Security, Mathematics, or a related fieldStrong foundation in cryptography, including:Solid theoretical understanding of cryptographic primitives and protocolsPractical experience implementing and/or auditing cryptographic systemsStrong proficiency in Rust (experience auditing Rust codebases is a strong plus)Deep understanding of Zero-Knowledge systems, including:Hands-on experience with at least one ZK proof system (e.g. Groth16, PLONK, Halo2, Bulletproofs)Proven usage of at least one zkDSL (e.g. Circom, Noir, Halo2, Cairo, etc.)Understanding of zkVM architectures and proof pipelinesAbility to identify common cryptographic and ZK vulnerabilitiesStrong debugging skills; experience with reverse engineering is a plusClear written and verbal communication skillsBenefits: Flexible Work Options: Remote-first culture with the opportunity to work from anywhere.Global and Diverse Workforce: You'll work with people from various backgrounds and cultures.Learning and Development: You'll work on innovative, challenging projects and have access to experts and mentors to enhance your skills.Career Growth: Access to training, mentorship, and opportunities to contribute to open-source initiatives.Global Events and Conferences: Opportunities to attend the industry events.Collaborative and Innovative Culture: We foster teamwork and encourage new ideas.