Product Owner

About The Vault The Vault is a crypto-finance company building an MPC-based crypto custody and wallet platform designed for both institutional and retail users. Our infrastructure combines threshold signing, HSM and hardware-wallet integration with non-extractable key shares, and robust recovery and policy flows across a growing range of chains and assets. We are headquartered in Limassol, Cyprus. The Role We are looking for a Product Owner to own the end-to-end product vision, roadmap, and requirements for our custody platform. You will be the single point of accountability for defining what the platform builds and why: prioritising the backlog across competing inputs — customer commitments, security audit findings, cryptographic research milestones, and regulatory obligations — and translating cryptographic and security constraints into clear, testable product requirements. You will act as the primary product interface between cryptography research, engineering, security, compliance, design, and customer-facing teams, and represent the platform externally in partner, auditor, and investor conversations. You will work in close partnership with the Delivery Manager: you set scope, priority, and acceptance, while the Delivery Manager owns execution cadence and release operations. What You Will Do Own and evolve the product vision, roadmap, and requirements for our 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 well-defined acceptance criteria. Define core platform capabilities: 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. What We Are Looking For 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: MPC / threshold signatures, HSMs, hardware wallets, recovery and policy engines. Ability to engage credibly with cryptographers, security engineers, and auditors — and to turn their constraints into product decisions. Excellent written specification skills: 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. How Success Is Measured Soundness and adoption of the product roadmap. Quality and clarity of the requirements handed to delivery. Security and audit posture of the resulting platform. Measurable growth of institutional and retail usage. A central role in shaping the flagship product of a growing crypto-finance company; Competitive compensation package; Annual performance bonus; Flexibility to work fully remotely or from our Limassol office, collaborating closely with a senior, technically deep team; Relocation package and visa support. #J-18808-Ljbffr