Principal Security Architect (On-Chain & Digital Assets)

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Principal Security Architect (On-Chain & Digital Assets) based in France.

• Own security architecture across the custody and on-chain layer of a regulated digital-asset platform operating globally.
• You will define and implement security requirements spanning architecture, engineering, operations, and regulatory assurance.
• The role covers critical areas including MPC and HSM key management, transaction authorization, wallet security, staking, and blockchain integrations.
• You will work closely with dedicated Infrastructure Security, Application Security, IAM, and SOC teams while providing specialized crypto-security leadership.
• Your expertise will help protect transaction flows, digital assets, and key management systems against sophisticated operational and cyber risks.
• You will also lead threat modeling, security assessments, incident response, and regulatory control mapping across international markets.
• This is a hands-on principal-level opportunity for a security architect with deep digital-asset expertise who can translate complex technical risks into resilient controls and clear business outcomes.