Digital Solutions SME - Digital Asset Custody & Blockchain Security

Project description

We are seeking an experienced Digital Solutions Subject Matter Expert (SME) to lead the design, security, and strategic evolution of institutional-grade digital asset custody platforms. This role serves as the authoritative technical expert for custody architecture, cryptographic security, and blockchain integrations, ensuring systems meet the highest standards of security, resilience, and regulatory compliance. As a senior technical leader, you will shape custody strategy, set engineering standards, mentor teams, and collaborate with security, compliance, and leadership stakeholders. You will play a key role in safeguarding private keys, strengthening transaction controls, and ensuring the scalability and reliability of mission-critical digital asset infrastructure.

Responsibilities

• Design and architect secure digital asset custody solutions, including hot, warm, and cold wallet environments Build, manage, and govern Key Management Systems (KMS) leveraging MPC, multi-signature, and HSM technologies Develop and maintain blockchain integrations for networks such as Bitcoin, Ethereum, and Layer 2 solutions Own the end-to-end private key lifecycle, including secure generation, storage, rotation, backup, recovery, and decommissioning Define and enforce secure transaction workflows, covering signing policies, approval hierarchies, thresholds, and monitoring Act as the Subject Matter Expert (SME) for custody architecture, blockchain security, and applied cryptography Lead security practices, including threat modeling, risk assessments, security audits, and incident response activities Ensure compliance with regulatory and security frameworks such as FCA, SOC 2, ISO 27001, and FATF guidelines Drive system reliability, scalability, and resilience, including blockchain node infrastructure, observability, and disaster recovery strategies Establish and maintain standards, technical documentation, and best practices for custody and blockchain engineering Mentor and guide engineering teams, influencing architectural decisions and long-term platform strategy

SKILLS

Must have

• Professional experience in software engineering, security engineering, or distributed systems Deep, hands-on experience in digital asset custody, blockchain platforms, or cryptographic systems Proven experience acting as a technical lead or SME for complex, security-sensitive platforms Advanced knowledge of public-key cryptography, key lifecycle management, and secure signing mechanisms Demonstrated experience with Ethereum, Bitcoin, and Layer 2 or emerging blockchain networks Strong understanding of custody models, transaction mechanics, fee models, and blockchain consensus behaviors Hands-on experience with MPC, multi-signature schemes, HSMs, and secure enclave technologies Experience designing highly available, fault-tolerant systems in cloud or hybrid environments Proficiency in one or more backend or systems languages (e.g., Go, Rust, Java, Python, or similar) Strong understanding of security architecture principles and defense-in-depth strategies Experience leading or supporting regulatory audits and certifications (SOC 2, ISO 27001, etc.) Expertise in threat modeling, vulnerability management, monitoring, and incident response Proven ability to mentor engineers and influence technical direction across teams Comfortable engaging with security, compliance, legal, and executive stakeholders Strong communication skills with the ability to translate complex technical concepts into business-relevant insights

Nice to have

n/a