Specialty Software Engineer (Web3/Fintech)

TL;DR

Specialty Software Engineer (Web3/Fintech): Building institutional-grade confidential custody infrastructure using Multi-Party Computation (MPC) and Trusted Execution Environments (TEEs) with an accent on cryptographic security and hardware-enforced isolation. Focus on implementing threshold signature schemes, attestation frameworks, and memory-safe systems to eliminate the approval-to-execution gap in digital asset transactions.

Location: Must be based in Concord, California

Salary: $60/hr–$70/hr on W2

Company

hirify.global is a professional services firm providing contingent workforce solutions and specialized engineering talent.

What you will do

• Architect and implement high-performance threshold signature schemes for ECDSA key generation and signing.
• Design and build services running inside Trusted Execution Environments (TEEs) like AMD SEV-SNP and Intel TDX.
• Implement RATS architecture to ensure hardware and software integrity for key operations.
• Develop memory-safe code in Rust and Go to ensure key material remains isolated within encrypted memory.
• Design secure workflows integrating hardware tokens for disaster recovery and deep storage.
• Create mechanisms to cryptographically bind business logic approvals to MPC signing sessions.

Requirements

• 7+ years of systems-level engineering experience with expert proficiency in Go and Rust.
• Deep experience implementing Threshold Cryptography and Multi-Party Computation (MPC).
• Hands-on experience with TEE technologies such as Confidential Containers, AMD SEV-SNP, or Intel SGX/TDX.
• Familiarity with RATS architecture, Key Broker Services, and Attestation Services.
• Experience designing defense-in-depth systems where infrastructure is treated as untrusted.
• Must be authorized to work in the United States as this is a W2 contingent role.

Nice to have

• Experience with OIDC/Identity standards like WebAuthn/FIDO2.
• Familiarity with CNCF Trustee or similar attestation frameworks.
• Background in institutional custody or high-security fintech environments.

Culture & Benefits

• Access to medical, dental, and vision insurance.
• 401K contribution plans.
• Paid time off and sick leave benefits.
• Opportunity to work on cutting-edge confidential computing and blockchain security initiatives.