Sr. Engineer, Cryptography Engineering

Eliassen Group; United States; Remote; USD 117,000 - 129,000; Full time

Benefits offered by this job

Medical

Dental

Vision benefits

401k with company matching

Life insurance

Job summary

Eliassen Group is seeking a security-focused engineer to build secure, scalable crypto custody components remotely. The role emphasizes MPC-based wallet design, cryptographic implementation, and robust backend services.

You will work on threat modeling, OpenSSL/MPC libraries integration, and hardware security features like Intel SGX, with emphasis on secure storage and cloud deployments.

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 through error handling.
• Experience with OpenSSL or MPC libraries and hardware security features such as Intel SGX and HSMs.
• Background integrating blockchain nodes and APIs to parse and create transactions.
• Knowledge of secure storage patterns and database security.
• Understanding of cloud security and containerization for deployment.

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

Secure software development

Cryptography engineering

Rust

Go

C/C++

Secure coding practices

Threat modeling

Blockchain knowledge

Education

Bachelor's degree

Tools

OpenSSL

MPC libraries

Intel SGX

Job description

Description:

Remote

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. You will help build a secure and resilient crypto and tokenized assets custody solution leveraging MPC, secure enclaves, and robust backend services.

We can facilitate w2 and corp-to-corp consultants.

For our w2 consultants, we offer a great benefits package that includes the following:

• Medical
• Dental
• Vision benefits
• 401k with company matching
• Life insurance

Rate: $85.00 to $94.00/hr. w2

JN -092026-108761

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.

Experience Requirements:

• 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 pitfalls such as 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.

Education Requirements:

Bachelor's degree.