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Tech Stack
Tools & technologiesGRPCJavaOracleRustWeb3
About the role
Key responsibilities & impact- Conduct end-to-end security assessments of blockchain-based systems, spanning cryptographic primitive design, protocol architecture, smart contract implementation, and deployed infrastructure.
- Own threat modeling and security architecture reviews across all product phases.
- Identify real-world vulnerabilities through rigorous hands-on code reviews, adversarial testing, and the development of proof-of-concept exploits for native services, EVM-compatible contracts, cross-chain bridges, and consensus-layer components.
- Partner directly with core engineering teams to translate complex cryptographic and protocol-level risks into prioritized, actionable remediation workflows.
- Define and enforce security gates prior to production deployment.
- Build, scale, and improve security tooling, fuzzing infrastructure, and CI/CD security automation to maximize security coverage efficiently.
- Track emerging blockchain and Web3 attack patterns, map them to the internal codebase, and drive proactive mitigation strategies.
Requirements
What you’ll need- Proven track record of hands-on vulnerability discovery and security testing across blockchain protocols, smart contracts, nodes, and APIs, with a demonstrated ability to identify deep architectural bugs beyond automated scanning.
- Strong threat modeling and security architecture review experience applied directly to distributed cryptographic systems.
- Direct experience assessing cross-chain protocols, threshold signature schemes, or other cryptographic systems with complex trust assumptions, including the auditing or breaking of cross-chain bridges.
- Deep working knowledge of applied cryptography (e.g., BLS signatures, pairing-based schemes, polynomial commitments, and Fiat-Shamir constructions) and the ability to reason about cryptographic failure modes in production environments.
- Ability to analyze trust model tradeoffs, including state proof, multisig, and oracle attestation models, and evaluate their impact on the broader attack surface.
- Mastery of blockchain security and secure coding practices across both EVM-compatible and non-EVM chains.
- Proficiency with security testing tooling, including static analysis, dynamic analysis, and fuzzing, alongside experience developing custom fuzzing harnesses or security test infrastructure.
- Strong ability to read, review, and audit cryptographic code written in Rust and/or Java.
- Clear understanding of memory safety, constant-time correctness, secret handling, and the unique security risks at JNI boundaries.
- Experience designing and operating grammar-aware fuzzing campaigns against gRPC, JSON-RPC, or protocol-level endpoints.
- Experience building classifier pipelines to isolate security signals from noise, or building custom security automation tooling.
- Prior security work focused on Ethereum consensus clients or production threshold signature systems.
- Experience integrating AI-assisted workflows into security review and triage processes.
Benefits
Comp & perks- Competitive salary and compensation package.
- Opportunity to work at the forefront of enterprise Web3 infrastructure and cryptographic innovation.
- Collaborative, high-caliber engineering environment focused on solving complex, large-scale distributed systems challenges.
- Flexible working arrangements and comprehensive professional growth opportunities.
ATS Keywords
✓ Tailor your resumeApplicant Tracking System Keywords
Tip: use these terms in your resume and cover letter to boost ATS matches.
Hard Skills & Tools
vulnerability discoverysecurity testingthreat modelingsecurity architecture reviewapplied cryptographysecure coding practicesstatic analysisdynamic analysisfuzzingcryptographic code auditing
Soft Skills
ability to analyze trust model tradeoffsstrong communicationcollaboration with engineering teamsproblem-solvingattention to detail