Product Security Engineer – Blockchain Security
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Job Description
Product Security Engineer identifying vulnerabilities in blockchain systems for secure Web3 applications. Collaborating with engineering teams to enhance protocol security and prevent vulnerabilities.
Responsibilities:
- Conduct end-to-end security assessments across blockchain protocols, smart contracts, cryptographic systems, and infrastructure.
- Identify real-world vulnerabilities through manual review, adversarial testing, and proof-of-concept exploit development.
- Design and execute security testing strategies for protocol components, cross-chain bridges, and distributed systems.
- Lead threat modeling exercises and security architecture reviews.
- Define and enforce security gates throughout the software development lifecycle.
- Collaborate closely with engineering teams to prioritize and remediate security risks.
- Build and improve security tooling, fuzzing frameworks, and CI/CD security automation.
- Research emerging Web3 attack vectors and proactively mitigate potential threats.
Requirements:
- Strong hands-on experience in vulnerability discovery and security testing across blockchain systems.
- Proven ability to identify real vulnerabilities beyond automated scanning tools.
- Experience performing threat modeling and security architecture reviews.
- Deep understanding of blockchain security, smart contracts, nodes, APIs, and distributed systems.
- Experience assessing cryptographic protocols, trust models, or cross-chain infrastructure.
- Strong knowledge of applied cryptography and modern security principles.
- Ability to audit and review Rust and/or Java codebases.
- Understanding of memory safety, secret management, and secure software development practices.
- Experience developing fuzzing infrastructure or advanced security testing frameworks.
- Experience with static analysis, dynamic analysis, and automated security tooling.
- Background in consensus-layer security or blockchain protocol development.
- Experience auditing cross-chain bridges.
- Knowledge of threshold signature systems, multisig architectures, and oracle security.
- Experience integrating AI-assisted workflows into security review processes.
Benefits:
- Competitive compensation package
- Fully remote work environment
- Opportunity to work on cutting-edge blockchain infrastructure
- Exposure to advanced cryptography and distributed systems
- High-impact role protecting critical Web3 technology at scale
- Work alongside world-class engineers and security researchers
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