Sigma Prime
Information security specialists & founders of Lighthouse, an open-source Ethereum consensus client
Cryptographer – Security Engineer
Location
United States
Posted
23 days ago
Salary
Not specified
Postgraduate DegreeEnglishRustSolidityGo
Job Description
• Conduct technical security reviews of cryptographic protocols and implementations
• Analyse protocol-level designs for soundness and attack surface
• Review Rust, Go, and Solidity cryptographic implementations
• Identify subtle vulnerabilities in mathematical constructions and real-world implementations
• Write clear and precise security reports
• Contribute to internal cryptographic research and methodology
• Collaborate with protocol teams to improve security and design robustness
• Potentially contribute to internal open-source projects such as Lighthouse
Job Requirements
- Advanced knowledge of applied cryptography
- Deep understanding of elliptic curves and finite field arithmetic
- Familiarity with pairing-based cryptography and BLS signatures
- Understanding of zero-knowledge systems (SNARKs, STARKs, PLONK, etc.)
- Experience analysing or implementing DKG or threshold signature systems
- Ability to read and reason about academic cryptography papers
- Strong systems programming skills (preferably Rust or Go)
Benefits
- Remote-first team
- High-calibre technical peers
- Opportunity to work on foundational infrastructure securing billions in value
- Meaningful impact on the security of global decentralised systems
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