Remote Senior Cryptography Engineer – MPC and Blockchain

Eliassen Group; Hartford (CT); Remote; USD 117,000 - 129,000; Part time

Benefits offered by this job

Medical, Dental, Vision benefits

401k with company matching

Life insurance

Job summary

Eliassen Group is seeking a Sr. Engineer in Cryptography Engineering for a remote contract role. You will design secure crypto custody components using MPC, leverage Intel SGX, OpenSSL, and MPC libraries, and work across Rust, Go, or C/C++ environments.

The role emphasizes threat modeling, secure code reviews, and secure storage of key shares, with a client in financial services relying on scalable backend security and blockchain integrations.

Qualifications

• Expertise in secure software development and cryptography engineering.
• Proficiency in Rust, Go, or C/C++ and secure coding against attacks.
• Hands-on experience with cryptographic protocols, key exchange, or signature schemes.
• Experience with OpenSSL or MPC libraries and hardware security features.
• Knowledge 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

Rust

Go

C/C++

Secure coding

Education

Bachelor's degree

Tools

OpenSSL

MPC libraries

Intel SGX

HSMs

Job description

Eliassen Group is seeking a Sr. Engineer in Cryptography Engineering for a remote contract role. You will design secure crypto custody components using MPC, leverage Intel SGX, OpenSSL, and MPC libraries, and work across Rust, Go, or C/C++ environments.

The role emphasizes threat modeling, secure code reviews, and secure storage of key shares, with a client in financial services relying on scalable backend security and blockchain integrations.