Description:
RemoteOur 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 Medical, Dental, and Vision benefits, 401k with company matching, and life insurance.
Rate: $85.00 to $94.00/hr. w2JN -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.
