Legacy is an easy-to-use, non-custodial Web3 wallet designed to protect digital assets through beneficiary protection and seamless DeFi access. Users can swap across chains, earn yield in one click, and safeguard wealth for the next generation.
About the Software Division We are building a portfolio of software products inside the Decentralized Masters ecosystem, including:
Trading Bot - automated crypto execution tools for serious investors
Future fintech and investor infrastructure tools
About The Role You will be the single person responsible for the security of a platform that tracks hundreds of millions in digital assets. Someone who reads a pull request and catches the injection vulnerability that two senior developers missed. Your primary responsibilities are security and quality assurance. You own penetration testing, vulnerability assessments, threat modeling, automated test frameworks, and CI quality gates across every product we ship. AWS, CI/CD pipelines, monitoring, and incident response. And because we are a small, senior team,



you will write production code when security and QA responsibilities are covered. The idóneo candidate has spent time at major product‑driven fintech and crypto companies where a single security failure can destroy user trust overnight.
Security (Primary)
Own the security posture across all products: If something gets breached, it is your problem. If nothing gets breached, it is because of your work
Conduct regular penetration testing, vulnerability assessments, and threat modeling aligned with OWASP standards and methodologies
Ensure full coverage of the OWASP Top 10 in application security testing, code reviews, and deployment checks
Perform security‑focused code reviews across frontend, backend, and infrastructure code, catching what standard code reviews miss
Implement and manage secrets management (Vault, AWS Secrets Manager, or KMS), access controls, and least‑privilege policies
Stay ahead of Web3 and crypto‑specific attack

📌 DevOps Security Software Engineer (Cataluña)
🏢 Decentralized Masters
📍 Cataluña