MPC & Confidential Computing Architect — Cryptography Lead

Jobtailor; California (MO); On-site; USD 180,000 - 240,000; Full time

Job summary

Jobtailor is seeking a seasoned software engineer to architect high‑performance cryptographic systems focused on threshold signatures and ECDSA key operations. You will design secure services for TEEs (AMD SEV-SNP, Intel TDX) and contribute to confidential computing architectures.

You will implement secure MPC signing sessions, explore ZK proofs, and translate academic concepts into production code, within a distributed backend focused on FinTech privacy-preserving ledgers.

Qualifications

• 5+ years of Specialty Software Engineering experience or equivalent
• 3+ years of experience in backend or systems programming
• Expert-level proficiency in Go (Golang)
• 6+ months of ECC experience
• 1+ year of experience with BFT consensus, P2P networking, and state replication
• Deep experience with Cosmos SDK and CometBFT (desired)
• Experience with Pedersen Commitments (desired)
• Experience with Zero-Knowledge Proofs (desired)
• Ability to translate mathematical specs from whitepapers into code (desired)
• Experience with MPC or Verifiable Secret Sharing (desired)
• Familiarity with Ristretto255 or gnark-crypto (desired)
• Background in FinTech/payment systems/high-frequency trading (desired)
• Understanding of Account vs UTXO trade-offs in privacy-ledgers (desired)

Responsibilities

• Architect and implement high-performance threshold signature schemes (DKLS23) for ECDSA key generation and signing
• Design services inside Trusted Execution Environments (AMD SEV-SNP, Intel TDX) for confidential containers
• Implement RATS architecture to ensure key shares release only after hardware/software integrity proof
• Design Cold Ceremony workflows integrating offline hardware tokens for disaster recovery
• Write memory-safe Rust/Go code operating on key material only in encrypted memory
• Design mechanisms that cryptographically bind business logic approvals to MPC signing sessions
• Lead architectural decisions for custody engine and MPC/Confidential Computing usage
• Contribute to a next-gen Digital Asset Platform for institutional finance

Skills

Go

Backend/Systems programming

Elliptic Curve Cryptography

Distributed systems

Reading academic papers

Tools

Cosmos SDK

CometBFT

RATS Architecture

WebAuthn

Gnark-crypto

Job description

Jobtailor is seeking a seasoned software engineer to architect high‑performance cryptographic systems focused on threshold signatures and ECDSA key operations. You will design secure services for TEEs (AMD SEV-SNP, Intel TDX) and contribute to confidential computing architectures.

You will implement secure MPC signing sessions, explore ZK proofs, and translate academic concepts into production code, within a distributed backend focused on FinTech privacy-preserving ledgers.