Senior Security Engineer, Digital Assets

Purple Drive Technologies LLC

Austin, TX, United States

about 1 month ago

Role details

Contract type

Permanent contract

Employment type

Full-time (> 32 hours)

Experience level

Expert

Experience required

7 years minimum

Compensation

$145,600.0 - $160,160.0

Working hours

Regular working hours

Job source

www.careerjet.com

Tech stack

Communications Protocols DevOps Digital Assets Distributed Systems Cryptographic Protocols Key Management Blockchain Software Engineering Software Security Blockchain Interoperability

Job description

Contribute to the design and implementation of secure wallet solutions spanning MPC, HSMs, cold, warm, and hot wallet architectures, and custodial versus non-custodial control models.
Implement distributed key generation and signing workflows and ensure secure handling of key lifecycle events such as generation, storage, usage, rotation, and recovery.
Design and implement security-critical components using modern cryptographic protocols, DeFi application security principles, and cross-chain and blockchain interoperability patterns.
Evaluate and integrate advanced technologies such as zero-knowledge proofs, decentralized identity frameworks, and applicable CBDC architectures.
Build and configure programmable custody policy engines with multi-approval workflows, spending thresholds, velocity limits, role-based access controls, and segregation of duties.
Work with engineering, cybersecurity, risk, compliance, and audit stakeholders on security reviews, threat modeling, architecture assessments, and incident analysis and remediation.
Assess blockchain architectures, smart-contract frameworks, tokenization approaches, and secure bridge or interoperability models for enterprise suitability.
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Requirements

7+ years of software engineering experience with a strong focus on security or cryptography.
Hands-on experience with secure wallet technologies and key management systems such as MPC, HSMs, or equivalent.
Strong understanding of cryptographic primitives, secure protocol design, and distributed systems.
Experience building systems where security failures have material impact.
Ability to collaborate effectively across engineering, security, and risk teams.
Strongly preferred: experience with crypto custody platforms, digital assets, or blockchain infrastructure; hands-on work with ZKPs, DID frameworks, DeFi protocols, or CBDC-related systems; and experience implementing policy-driven transaction controls in high-risk systems.

Benefits & conditions

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