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# Security Engineer

- **Company:** Eliassen Group
- **Location:** New York, NY, United States
- **Salary:** $183,040.0 - $195,520.0
- **Contract:** Permanent contract
- **Skills:** Application Programming Interfaces (APIs), Audit Trail, C++ (Programming Language), Cloud Computing Security, Code Review, Databases, Concurrency Controls, Cryptographic Protocols, Hardware Security Module, Key Management, OpenSSL, Blockchain, Secure Coding, Software Engineering, Containerization, Ethereum, Bitcoin
- **Published:** July 8, 2026
- **Apply:** https://dejobs.org/x/x/9FA64CD040A14ADBBB553A0E0A83A0E0/job/

## About the Role

* 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.

## Description

* 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.


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