Digital Asset Security Architect: HSM & MPC Expert

Aquent; Southlake (TX); Hybrid; USD 112,000 - 124,000; Full time

Job summary

Aquent is partnering with a leading financial services institution to recruit a Cyber Security Developer focused on digital asset custody, key management, and architecture. The role emphasizes strong cryptographic systems, HSM/MPC implementations, and security governance.

As the technical backbone for custody strategy, you will influence design decisions, drive incident response readiness, and collaborate with security and risk teams to ensure resilience and regulatory alignment across multiple

Qualifications

• 10+ years of software engineering in security-sensitive or cryptographic systems.
• Hands-on with HSMs and MPC frameworks.
• Experience with security tooling such as Slither, Mythril, Foundry Fuzzing.
• Proficiency in C, C++, Rust or Go for cryptographic implementations.
• Experience collaborating with security auditors.
• Designing fault-tolerant, distributed architectures.

Responsibilities

• Define custody architecture for HSMs and MPC, with secure key management.
• Specify secure key generation, storage, rotation, signing, recovery across hot/warm/cold storage.
• Ensure cryptographic designs meet regulatory, security, and audit needs.
• Lead Custody Policy Engine design for approvals, limits, and duties segregation.
• Translate risk requirements into observable, testable technical controls.
• Act as technical advisor on custody governance.

Skills

Security-focused engineering

Cryptographic systems

HSMs experience

MPC frameworks

Auditing collaboration

Tools

C/C++

Rust

Go

Security tooling (Slither/Mythril Foundry)

Job description

Aquent is partnering with a leading financial services institution to recruit a Cyber Security Developer focused on digital asset custody, key management, and architecture. The role emphasizes strong cryptographic systems, HSM/MPC implementations, and security governance.

As the technical backbone for custody strategy, you will influence design decisions, drive incident response readiness, and collaborate with security and risk teams to ensure resilience and regulatory alignment across multiple