Specialty Software Engineer (Cryptography / MPC)

Specialty Software Engineer (Cryptography / MPC)#26-06556 CONCORD, CA Onsite Contract Starts 6/25/2026 Ends 6/24/2027 Job Description Genesis10 is currently seeking a Specialty Software Engineer (Cryptography / MPC) for a contract position with a Global Financial Institution located in Concord, CA. This is a 12 month contract opportunity. We are engineering a next-generation Digital Asset Platform designed to solve the "Approval-to-Execution Gap" in institutional finance, ensuring that digital asset transactions are signed only when strictly authorized by policy, without exposing private keys to cloud operators or insiders. This institutional-grade Confidential Custody Infrastructurebines Multi-Party Computation (MPC) with hardware-enforced Confidential Computing (TEEs) to create a system w key operations are cryptographically isolated, attestable, and mathematically proven secure.

Responsibilities:

MPC Protocol Implementation:

Architect and implement high-performance threshold signature schemes (specifically DKLS23 or similar) for ECDSA key generation and signing

Confidential Computing Architecture:

Design and build services that run inside Trusted Execution Environments (TEEs), specifically targeting AMD SEV-SNP and other confidential containers (CoCo)

Attestation Framework:

Implement the RATS (Remote ATtestation procedureS) architecture (RFC 9334) to ensure that no key is released until the requesting node proves its hardware and software integrity to a Key Broker Service

Hardware Security Integration:

Design "Cold Ceremony" workflows that integrate offline hardware tokens as offline Key Encryption Keys (KEKs) for disaster recovery and deep storage

Secure Enclave Development:

Write and optimize memory-safe code (Rust/Go) that operates on key material exclusively within encrypted memory regions, ensuring zero leakage to the host OS or hypervisor

Policy-to-Cryptography Binding:

Design mechanisms to cryptographically bind business logic approvals (e.g., WebAuthn assertions) directly to the MPC signing session, eliminating the gap between "approval" and "execution" Consult on or participate in moderatelyplex initiatives and deliverables within Specialty Software Engineering

Requirements:

4 years of Specialty Software Engineering experience, or equivalent demonstrated through one or abination of the following: work or consulting experience, training, military experience, education 7 years of experience in systems-level engineering, with expert proficiency in Go (for orchestration) and Rust (for cryptographic primitives) Deep experience implementing Threshold Cryptography and Multi-Party Computation (MPC) andfort with implementing papers like GG20 from scratch Hands-on experience with TEE technologies, specifically Confidential Containers (CoCo), AMD SEV-SNP, or SGX/TDX, with an understanding of attestation flows, measurements, and memory encryption Familiarity with the RATS architecture andponents like Key Broker Services (KBS) and Attestation Services (AS) Experience designing "Defense-in-Depth" systems w infrastructure (Kubernetes/Cloud) is treated as untrusted Desired skills: Experience with OIDC/Identity standards (integrating WebAuthn/FIDO2 with cryptographic operations) Familiarity with CNCF Trustee or similar attestation frameworks Experience in institutional custody, key management, or high-security fintech environments Pay range: $60.94 - $68.94 per hour Only candidates available and ready to work directly as Genesis10 employees will be considered for this position. If you have the described qualifications and are interested in this exciting opportunity, please ! Ranked a Top Staffing Firm in the U.S. by Staffing Industry Analysts for six consecutive years, Genesis10 puts thousands of consultants and employees to work across the United States every year in contract, contract-for-hire, and permanent placement roles. With more than 300 active clients, Genesis10 provides access to many of the Fortune 100 firms and a variety of mid-market organizations across the full spectrum of industry verticals. For contract roles, Genesis10 offers the benefits listed below. If this is a perm-placement opportunity, our recruiter can talk you through the unique benefits offered for that particular client. Benefits of Working with Genesis10: Access to hundreds of clients, most who have been working with Genesis10 for 5-20 years. The opportunity to have a career-home in Genesis10; many of our consultants have been working exclusively with Genesis10 for years. Access to an experienced, caring recruiting team (more than 7 years of experience, on average.) Behavioral Health Platform Medical, Dental, Vision Health Savings Account Voluntary Hospital Indemnity (Critical Illness & Accident) Voluntary Term Life Insurance 401K Sick Pay (for applicable states/municipalities) Commuter Benefits (Dallas, NYC, SF, and Illinois) For multiple years running, Genesis10 has been recognized as a Top Staffing Firm in the U.S., as a Best Company for Work-Life Balance, as a Best Company for Career Growth, for Diversity, and for Leadership, amongst others. To learn more and to view all our available career opportunities, please visit us at our website. Genesis10 is an Equal Opportunity Employer. Candidates will receive consideration without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran.