product owner in Web3

The Vault is a crypto-finance company building an MPC-based crypto custody and wallet platform for institutional and retail users. Its infrastructure combines threshold signing, HSM and hardware-wallet integration, non-extractable key shares, and recovery and policy flows across multiple chains and assets.

• Own and evolve the product vision, roadmap, and requirements for MPC-based custody and wallet infrastructure;
• Prioritise the product backlog across customer commitments, security audit findings, cryptographic research milestones, and regulatory obligations;
• Translate cryptographic and security constraints into clear, testable product requirements with defined acceptance criteria;
• Define core platform capabilities, including threshold signing, HSM and Ledger integration with non-extractable key shares, recovery and policy flows, and chain and asset coverage;
• Lead customer and stakeholder discovery and produce high-quality written specifications;
• Make product-level trade-offs between new features, platform hardening, and technical debt;
• Serve as the primary product interface between cryptography research, engineering, security, compliance, design, and customer-facing teams;
• Represent the platform externally in partner, auditor, and investor conversations.

• Proven experience as a Product Owner or Product Manager on a technical platform, ideally in digital asset custody, fintech infrastructure, security, or cryptography-adjacent products;
• Working understanding of custody and key-management concepts, including MPC, threshold signatures, HSMs, hardware wallets, recovery, and policy engines;
• Ability to engage credibly with cryptographers, security engineers, and auditors and turn their constraints into product decisions;
• Excellent written specification skills, including unambiguous requirements, acceptance criteria, and documentation;
• Experience balancing regulatory and audit obligations with commercial product goals;
• Strong stakeholder management and external communication skills;
• Fluent English;
• Nice to have: hands-on experience with blockchain protocols, wallets, or web3 products as a user or builder, exposure to security audits, penetration testing cycles, or compliance frameworks in a regulated environment, experience serving both institutional and retail user segments on one platform.

• Competitive compensation package;
• Flexibility to work fully remotely or from the Limassol office.