This position is posted by Jobgether on behalf of a partner company. We are currently looking for a Zero Knowledge/Cryptography Auditor in Ireland.
This role offers the opportunity to work at the forefront of blockchain security and cryptographic research, focusing on the evaluation and auditing of zero-knowledge systems that power next-generation decentralized applications. You will be responsible for analyzing the correctness, soundness, and security of complex cryptographic protocols across cutting-edge ecosystems. The position combines deep theoretical cryptography with hands‑on engineering, requiring close collaboration with researchers, protocol engineers, and clients. You will contribute to strengthening the security of high‑impact blockchain systems while helping design and improve advanced auditing tools. The environment is highly technical, research‑driven, and fast‑evolving, with constant exposure to new cryptographic innovations. This is a unique opportunity to directly influence the security and reliability of foundational Web3 infrastructure.
Accountabilities
Conduct in-depth security audits of cryptographic protocols, zero‑knowledge systems, zkDSL circuits, and zkVM guest programs
Evaluate correctness, soundness, completeness, and privacy guarantees in ZK‑based implementations
Review production‑level code across Ethereum, Layer 2, and other blockchain ecosystems to identify vulnerabilities and propose fixes
Collaborate with security engineers and researchers to improve internal auditing methodologies and tooling
Design and develop new tools for analyzing and securing cryptographic and zero‑knowledge systems
Stay up to date with emerging ZK frameworks, proof systems, and cryptographic attack vectors
Participate in client discussions to present findings, recommend mitigations, and support remediation efforts
Contribute to internal research documentation and knowledge sharing initiatives
Requirements
1+ year of experience in security auditing, cryptography, or zero‑knowledge systems
Degree in Computer Science, Cybersecurity, Mathematics, or a related technical field
Strong understanding of cryptographic principles, including primitives and protocol design
Practical experience implementing or auditing cryptographic systems
Proficiency in Rust, with experience reviewing Rust‑based codebases considered a strong advantage
Hands‑on experience with at least one zero‑knowledge proof system (e.g., Groth16, PLONK, Halo2, Bulletproofs)
Experience using at least one zkDSL (e.g., Circom, Noir, Cairo, Halo2, or similar)
Solid understanding of zkVM architectures and proof generation pipelines
Strong analytical and debugging skills, with reverse engineering experience considered a plus
Excellent written and verbal communication skills for technical reporting and client interaction
Familiarity with advanced cryptographic primitives or prior cybersecurity experience is a plus
Benefits
Fully remote, global‑first work environment
Opportunity to work on cutting‑edge cryptography and blockchain security systems
Exposure to leading experts in zero‑knowledge and decentralized technologies
Strong learning and professional development opportunities through mentorship and training
Participation in global blockchain events and industry conferences
Collaborative, research‑driven, and innovation‑focused culture
Career growth opportunities in a rapidly evolving technical domain
Inclusive and diverse international team environment
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