Chief Information Security Officer — Autheo | Blockchain, Crypto & Web3 Security

Responsibilities

• Own key management end to end for validator, bridge, deployer, admin and service keys
• Set custody and signing architecture, including HSMs, MPC or threshold signing and multisig
• Harden validators, nodes, RPC and consensus-adjacent operations with protocol engineering and SRE
• Own security for the Autheo Bridge, Hyperlane warp routes and smart contracts before and after changes
• Lead on-chain incident response, pause and upgrade runbooks, forensics and public post-mortems
• Run the third-party audit program and a responsible-disclosure and bug-bounty program
• Drive the TheoID post-quantum roadmap using ML-KEM, ML-DSA and SLH-DSA
• Lead and grow the security team and report risk to the Managing Directors

Requirements

• Hands-on Web3 or blockchain security experience securing a protocol, bridge, DeFi app, wallet or custody platform in production
• Crypto security depth in key management, HSM, MPC or threshold signing and transaction-signing security
• Blockchain infrastructure security including validator or node operations, bridges or cross-chain messaging
• Smart-contract security, scoping audits with Web3 auditors and driving findings to remediation and retest
• Led on-chain incident response for an exploit, key compromise, bridge or validator incident
• 10+ years in information security, including 3+ years as CISO, VP of Security, Head of Security or equivalent
• Comfortable working directly with protocol engineers, SRE and contract developers

Preferred Qualifications

• Post-quantum migration work with ML-KEM, ML-DSA or SLH-DSA, or applied cryptography
• Cosmos SDK, CometBFT, IBC, EVM or Hyperlane experience
• Bug-bounty or disclosure program experience and a public artifact such as a post-mortem, threat model or CVE
• AI endpoint security in production
• SOC 2 or ISO 27001 experience; CISSP, CISM or CIPP
• Prior founder or equity-compensated leadership experience

Benefits

• Equity in Launch Legends and Autheo plus a THEO token allocation
• No cash salary; at least 20 hours per week
• Remote, with direct access to engineering leads and the Managing Directors

About the Company

Launch Legends bridges Web3 blockchain technology with Web2 integration through enterprise solutions, DePIN and decentralized financial infrastructure. Its flagship project, Autheo, is an AI-enabled Layer-0 OS with an integrated Layer-1 blockchain.