Senior Cryptography Engineer - Remote MPC & Crypto Custody

Eliassen Group; Salt Lake City (UT); Remote; USD 117,000 - 129,000; Full time

Job summary

Eliassen Group in the United States is seeking a Sr. Engineer, Cryptography Engineering for a remote contract role. You will design secure crypto custody components and contribute across the stack.

Key work includes implementing cryptographic protocols, integrating with SGX/HSMs, and reviewing libraries like OpenSSL. Strong Rust/Go/C/C++ skills and deep security engineering expertise are essential.

Qualifications

• Expertise in secure software development and cryptography engineering.
• Proficiency in Rust, Go, or C/C++ and secure coding against known classes of attacks.
• Hands-on experience with cryptographic protocols, key exchange, or signature schemes.
• Familiarity with entropy quality and information leakage via error handling.
• Experience with OpenSSL or MPC libraries and hardware security features such as Intel SGX and HSMs.
• Background integrating blockchain nodes and APIs with the ability to parse and create transactions.
• Knowledge of secure storage patterns and database security.
• Understanding of cloud security and containerization for deployment.
• Experience with Trusted Execution Environments such as Intel SGX, including remote attestation.

Responsibilities

• Design and implement secure software components for a crypto custody wallet based on MPC.
• Apply threat modeling to anticipate and mitigate attack vectors including side-channel and MITM during MPC rounds.
• Implement and review cryptographic code in Rust, Go, or C/C++ with secure coding practices.
• Audit and integrate cryptographic libraries such as OpenSSL and MPC-specific frameworks.
• Leverage hardware security features including Intel SGX and HSMs, including remote attestation.
• Integrate with blockchain nodes and APIs to assemble and broadcast transactions across networks.
• Parse and construct blockchain transactions, including Bitcoin UTXOs and Ethereum RLP.
• Design secure storage for encrypted key shares and audit logs, and implement robust database practices.
• Build reliable networking, RPC, and concurrency controls for orchestrating multi-party signing.
• Contribute to cloud security and containerized deployments to avoid misconfigurations.

Skills

Crypto engineering

Rust/Go/C++

Crypto protocols

Entropy & error handling

OpenSSL/MPC libs

Intel SGX/HSMs

Blockchain integration

Secure storage patterns

Cloud & containers

Education

Bachelor's degree

Job description

Eliassen Group in the United States is seeking a Sr. Engineer, Cryptography Engineering for a remote contract role. You will design secure crypto custody components and contribute across the stack.

Key work includes implementing cryptographic protocols, integrating with SGX/HSMs, and reviewing libraries like OpenSSL. Strong Rust/Go/C/C++ skills and deep security engineering expertise are essential.