Product Security Engineer – Blockchain Security

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Ant-Tech

WebsiteLinkedInAll Job Openings

11 - 50 employees

Founded 2016

🔌 API

☁️ SaaS

🤝 B2B

API • SaaS • B2B

Ant-Tech is a French technology company specializing in innovative digital solutions, offering services in design, web development, and mobile app creation. The company focuses on user experience and embraces the latest technology trends to deliver high-quality products customized to client needs. Ant-Tech takes pride in their expertise in project management and support, ensuring that all masterpieces run smoothly and efficiently.

📋 Description

• 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