Product Security Engineer

🕒 2 dias atrás

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MLabs

SiteLinkedInTodas as Vagas

51 - 200 funcionários

A MLabs Consulting ajuda a configurar especificações de projetos, implementar, gerenciar e manter projetos técnicos para IA, Fintech, Tecnologia da Informação e mais. Somos especializados em programação funcional, compiladores, IA, DevOps e desenvolvimento full-stack.

Descrição

• 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.

🎯 Requisitos

• 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.

🏖️ Benefícios

• 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.