Product Security Engineer (Blockchain Security)
Tasks 💰 Salary: $75,000 – $85,000/year 🌍 Location: Remote (APAC & Europe) About the Opportunity We are partnering with a leading blockchain infrastructure company that is building secure, scalable, and enterprise-grade distributed ledger technology powering next-generation Web3 applications. As the platform expands its protocol capabilities, smart contract ecosystem, and cross-chain infrastructure, the security team is seeking a highly skilled Product Security Engineer to proactively identify vulnerabilities, strengthen protocol security, and protect critical blockchain systems before they reach production.
What You'll Do
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
Core Qualifications 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.
Preferred Qualifications
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. What Success Looks Like Within the first 6–12 months, you will: ✅ Integrate security review processes into core development workflows ✅ Improve automated security coverage through tooling and CI/CD integration ✅ Reduce vulnerability backlog through structured collaboration with engineering teams ✅ Strengthen organizational knowledge of blockchain attack vectors and secure coding practices
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