Security Engineer

Description:
Hybrid 3 days on site in either New York, NY or Menlo Park, CA

Our client seeks experienced, hands-on Security Engineers to implement secure, scalable infrastructure for institutional digital finance. This implementation-focused role emphasizes secure software development, applied cryptography, trusted execution environments, remote attestation, and distributed blockchain systems. The work will focus on production engineering, bridging security concepts with practical implementation, with a strong emphasis on Go.

Due to client requirements, applicants must be willing and able to work on a w2 basis. 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: $90.00 to $100.00/hr. w2

JN -31

Responsibilities:

• Design and build highly secure, resilient infrastructure supporting cryptocurrency and tokenized asset custody solutions.
• Partner with cryptographers and security specialists to implement cryptographic protocols and security designs in production systems.
• Develop secure, production-grade software with a strong emphasis on Go (Golang).
• Work with Trusted Execution Environments such as AWS Nitro Enclaves or Intel SGX, including implementation of remote attestation.
• Implement and integrate cryptographic libraries and frameworks, including OpenSSL and MPC-related technologies.
• Work with hardware-backed security technologies such as TEEs and Hardware Security Modules (HSMs).
• Participate in threat modeling to identify and mitigate attack vectors, including risks associated with MPC communication, malicious clients, compromised infrastructure, and network-based attacks.
• Conduct security-focused code reviews and design tests to identify vulnerabilities and weaknesses in security-sensitive software.
• Apply cryptographic protocols such as key exchange and digital signature schemes within production applications.
• Integrate with blockchain nodes and APIs to support transaction construction, signing, and broadcasting across multiple networks.
• Work with blockchain transaction formats, including Bitcoin UTXOs and Ethereum transaction encoding and formats.
• Design secure mechanisms for storing sensitive information such as encrypted key shares, credentials, and audit logs.
• Build secure communication between distributed signing parties using networking, RPC frameworks, and concurrency.
• Apply cloud security and container security practices when deploying security-sensitive workloads.

Experience Requirements:

• Strong background in hands-on security engineering and secure software development.
• Strong proficiency with Go (Golang) and experience building production-grade systems in Go.
• Experience with C/C++ or other systems-level languages is beneficial.
• Hands-on experience with Trusted Execution Environments (TEEs), particularly AWS Nitro Enclaves and/or Intel SGX.
• Practical experience implementing or working with remote attestation.
• Experience implementing applied cryptography or integrating cryptographic functionality into production applications.
• Experience using or auditing cryptographic libraries such as OpenSSL or MPC-specific libraries.
• Familiarity with Hardware Security Modules (HSMs) and hardware-backed security.
• Experience with MPC or related cryptographic frameworks used in digital asset custody solutions.
• Strong threat modeling skills and the ability to identify and mitigate potential attack vectors.
• Understanding of common cryptographic implementation risks, including random number generation, information leakage, insecure error handling, and implementation-level vulnerabilities.
• Experience integrating with blockchain nodes and APIs.
• Understanding of blockchain transaction formats and transaction signing workflows.
• Experience with secure data storage, encrypted secrets and key material, and audit logging.
• Strong networking, distributed systems, RPC, and concurrency skills.
• Understanding of cloud security and secure containerized deployments.

Recruitment Transparency Notice

Eliassen Group values transparency in our recruitment practices. Please be advised that Eliassen Group utilizes artificial intelligence (AI) tools as part of its initial application screening and hiring process. You may receive email and SMS notifications from the Eliassen Virtual Recruiting Team ( , ) inviting you to complete a brief voice screening as part of your application process. These tools assist our hiring teams in different ways, including but not limited to, assistance in reviewing application materials to help identify candidates whose qualifications most closely match the requirements of the position. All AI-assisted evaluations and responses are reviewed by human recruiters before any hiring decisions are made. The use of AI in our process is intended to support fairness, efficiency, and consistency, and Eliassen Group takes measures to prevent bias or discrimination in connection with its hiring practices. By proceeding, you acknowledge, agree, and consent to Eliassen Group's use of these tools, including AI tools, as part of the application and hiring process.

Skills, experience, and other compensable factors will be considered when determining pay rate. The pay range provided in this posting reflects a W2 hourly rate; other employment options may be available that may result in pay outside of the provided range.

W2 employees of Eliassen Group who are regularly scheduled to work 30 or more hours per week are eligible for the following benefits: medical (choice of 3 plans), dental, vision, pre-tax accounts, other voluntary benefits including life and disability insurance, 401(k) with match, and sick time if required by law in the worked-in state/locality.
If anyone reaches out to you about an open position connected with Eliassen Group, please ensure that you are working directly with us by confirming the following:

When you work with Eliassen Group, all email communication will come from an Eliassen.com address, never Gmail, Yahoo, etc.

Eliassen Group will never ask you for personal information (home address, bank account, or check routing number) until you have worked with someone clearly associated with Eliassen Group.

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About Eliassen Group:

Eliassen Group is a strategic consulting firm that helps organizations reach further and achieve more through our technology, business advisory, and life sciences solutions. For nearly 40 years, we have combined exceptional people, deep domain expertise, and intelligent capabilities to expand our clients' capacity and accelerate meaningful outcomes. We are driven by a purpose to positively impact the lives of our employees, clients, consultants, and the communities we serve.

Eliassen is committed to building a diverse and inclusive team from a variety of backgrounds, perspectives, and skills. We are an Equal Opportunity and Affirmative Action Employer and all employment decisions are based on merit, performance, and business needs. Eliassen does not discriminate on the basis of race, color, gender identity or expression, sexual preference or orientation, sex (including pregnancy, childbirth, and related medical conditions), marital status, creed, religion, physical or mental disability, genetic information, military or veteran status, age, ancestry, national origin, citizenship status, prohibited criminal record inquiries of applicants and employees, or any other category protected by federal, state, or local laws.

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