Sr. Engineer, Cryptography Engineering
Anywhere
Category: Development
Industry: Financial Services
Workplace Type: Remote
Standard Hours: Open
Reference ID: JN -092026-108761
Date Posted: 09/23/2026
Shortcut: http://careers.eliassen.com/zWmywO
Description:
Remote
Our 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. w2
JN -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.
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