Security Engineer

• Design and implement secure software and cryptography engineering for custody solutions.
• Collaborate with cryptographers to build secure and resilient MPC-based signing and key management workflows.
• Apply secure coding practices in C/C++, Go, or Rust with attention to side-channel and related attack resistance.
• Audit and integrate cryptographic libraries such as OpenSSL and MPC-specific libraries.
• Leverage hardware security features including Intel SGX, HSMs, and remote attestation.
• Develop and review threat models covering network and application attack vectors.
• Conduct crypto-focused code reviews and design tests for potential vulnerabilities.
• Integrate with blockchain nodes and APIs to assemble, sign, and broadcast transactions across networks.
• Handle blockchain transaction formats including Bitcoin UTXOs and Ethereum RLP.
• Implement secure storage patterns for encrypted key shares and audit logs.
• Build reliable networking and concurrency controls for communication among signing parties.
• Apply cloud security best practices and containerization for deployment.

• Expertise in secure software development and cryptography engineering.
• Proficiency in C/C++, Go, or Rust and secure coding practices.
• Hands-on use or audit of cryptographic libraries such as OpenSSL or MPC-specific libraries.
• Familiarity with Intel SGX, HSMs, and remote attestation.
• Experience with MPC or cryptographic frameworks used for crypto custody.
• Strong threat modeling capabilities and mitigation planning.
• Experience implementing or auditing cryptographic protocols such as key exchange or signature schemes.
• Knowledge of pitfalls including weak randomness and error handling that leaks information.
• Experience integrating with blockchain nodes and APIs.
• Understanding of Bitcoin UTXOs, Ethereum RLP, and transaction parsing and creation.
• Knowledge of secure storage and databases.
• Familiarity with cloud security and containerization.

Education Requirements:

• Bachelor’s degree.

Our client is building secure and scalable infrastructure for institutional digital finance. The team focuses on security engineering, cryptography, blockchain, and research-backed engineering that bridges theory and practice. The Security Engineer will collaborate with cryptographers to design and implement a high-security, resilient crypto and tokenized assets custody solution, integrating secure protocols, MPC frameworks, and blockchain networks.

We can facilitate w2 and corp-to-corp consultants. For our w2 consultants, we offer a great benefits package that includes Medical, Dental, and Vision benefits, 401k with company matching, and life insurance.

Rate: $88.00 to $94.00/hr. w2, Skills, experience, and other compensable factors will be considered when determining pay rate. The pay range provided in this posting reflects a W2 hourly rate; other employment options may be available that may result in pay outside of the provided range.

W2 employees of Eliassen Group who are regularly scheduled to work 30 or more hours per week are eligible for the following benefits: medical (choice of 3 plans), dental, vision, pre-tax accounts, other voluntary benefits including life and disability insurance, 401(k) with match, and sick time if required by law in the worked-in state/locality.

If anyone reaches out to you about an open position connected with Eliassen Group, please ensure that you are working directly with us by confirming the following:

· When you work with Eliassen Group, all email communication will come from an Eliassen.com address, never Gmail, Yahoo, etc.

Eliassen Group is a strategic consulting firm that helps organizations reach further and achieve more through our technology, business advisory, and life sciences solutions. For nearly 40 years, we have combined exceptional people, deep domain expertise, and intelligent capabilities to expand our clients’ capacity and accelerate meaningful outcomes. We are driven by a purpose to positively impact the lives of our employees, clients, consultants, and the communities we serve.