Cryptography Engineer - PURVIEW - San Francisco, CA
PURVIEW
*Job Title: Security & Cryptography Engineer*Location: San Francisco, CA (Hybrid)*Employment: Contract*Key ResponsibilitiesImplement MPC-CMP key management with 1-round signing, split shares, and auto key refreshIntegrate Intel SGX enclaves for hardware-isolated cryptographic operationsDesign PKI/MSP infrastructure for identity management across network participantsImplement mTLS for all communication with automated certificate rotationBuild real-time compliance screening integrating Chainalysis and EllipticImplement Travel Rule protocol for cross-border reportingDesign ZK-proof generation for periodic Merkle root anchoring to EthereumArchitect Private Data Collections and channel-level data segregationLead penetration testing, vulnerability assessments, and red team exercisesMaintain SOC 2 Type 2, ISO 27001, PCI DSS, C4 CCSS QSP Level 3 complianceOperate 24/7 SOC with automated threat detection and incident responseDesign key ceremony procedures and multi-sig governance for root keys*Required Qualifications7+ years security, 3+ years cryptographic systems or key managementDeep MPC knowledge: threshold signing (MPC-CMP, FROST)HSM, Intel SGX/TDX, TEE experiencePKI: X.509, certificate authorities, CRL/OCSP, mTLSKYC/AML implementation with Chainalysis, Elliptic, or similarZK-proof systems (zk-SNARKs, zk-STARKs) practical applicationsBlockchain security: contract auditing, consensus attacks, crypto primitivesSOC 2, ISO 27001, PCI DSS familiarityGo, Rust, or C++ for systems-level securityBS/MS in CS, Cryptography, or Information Security*Technical Skills Required*Category Skills*Cryptography
: MPC-CMP, ZK-Proofs, Merkle Trees, Threshold Signing
*Key Management:**
HSMs, Intel SGX, Key Ceremonies, Multi-sig
*Identity:**
PKI/X.509, mTLS, MSP, Certificate Rotation
*Compliance:**
Chainalysis, Elliptic, Travel Rule, KYC/AML
*Languages:**
Go, Rust, C++, Python
*Frameworks:**
SOC 2, ISO 27001, PCI DSS, C4 CCSS QSP L3
*Preferred Qualifications**Fireblocks platform and MPC-CMP int