Security Engineer
New York, NY
Category: Development
Industry: Financial Services
Standard Hours: Open
Reference ID: JN -102026-109131
Date Posted: 10/19/2026
Shortcut: http://careers.eliassen.com/BxMSYC
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 -102026-109131
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.
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.
If you have any indication of fraudulent activity, please contact fraud@eliassen.com.
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Eliassen Group is an Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, gender identity, national origin, age, protected veteran status, or disability status. Eliassen Group’s Affirmative Action Plan (AAP) is available for inspection by any employee or applicant for employment upon request, during normal business hours of Monday through Friday, 8:30am to 5:30pm EST. Interested persons should contact Phaedra Wells at pwells@eliassen.com for assistance. It is unlawful in Massachusetts and Maryland to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.
Applicants with disabilities that believe they require an accommodation or assistance with a position, please email our HR team at hradmin@eliassen.com. This email inbox is designed exclusively to assist job seekers whose disability prevents them from being able to apply online. Emails sent for other purposes will not receive a response.
Please be advised that a number of fraudulent job postings have been released under the Eliassen Group brand.
Unfortunately, fraudulent job postings can happen. If anyone reaches out to you about an open position connected with Eliassen Group, never provide personal or financial information to anyone who is not clearly associated with Eliassen Group
If anyone seemingly from Eliassen Group has ever requested this personal information in the past or does so in the future, please contact fraud@eliassen.com.
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, as indicated above