Lead Cryptography Engineer – MPC, Confidential Computing

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

• Architect and implement high-performance threshold signature schemes, specifically DKLS23 or similar, for ECDSA key generation and signing
• Design and build services inside Trusted Execution Environments, targeting AMD SEV-SNP and Intel TDX via Confidential Containers
• Implement the RATS architecture (RFC 9334) to ensure key shares are released only after hardware and software integrity is proven to the Key Broker Service
• Design Cold Ceremony workflows integrating offline hardware tokens as offline Key Encryption Keys for disaster recovery and deep storage
• Write and optimize memory-safe Rust/Go code operating on key material exclusively within encrypted memory regions
• Design mechanisms that cryptographically bind business logic approvals, such as WebAuthn assertions, directly to MPC signing sessions
• Lead architectural decisions for the custody engine and define use of MPC and Confidential Computing
• Contribute to a next-generation Digital Asset Platform for institutional finance

Requirements

• 5+ years of Specialty Software Engineering experience, or equivalent demonstrated through work experience, training, military experience, or education
• 3+ years of experience in backend or systems programming
• Expert-level proficiency in Go (Golang)
• 6+ months of experience with Elliptic Curve Cryptography (ECC)
• 1+ year of experience with BFT consensus algorithms, P2P networking, and state replication
• Reliable distributed systems experience
• Deep experience with Cosmos SDK and CometBFT (desired)
• Experience with Pedersen Commitments (desired)
• Experience with Zero-Knowledge Proofs, specifically Bulletproofs or Sigma protocols (desired)
• Ability to read academic whitepapers/preprints and translate mathematical specifications into functioning code (desired)
• Experience with MPC or Verifiable Secret Sharing schemes (desired)
• Familiarity with the Ristretto255 curve or libraries like gnark-crypto (desired)
• Background in FinTech, payment systems, or high-frequency trading platforms (desired)
• Understanding of Account Model vs. UTXO Model trade-offs in privacy-preserving ledgers (desired)

Core Competencies

Demonstrates expertise in designing and implementing high-performance cryptographic systems, particularly in ECDSA key generation and signing, while ensuring secure operations within Trusted Execution Environments. Proficient in backend programming with a focus on Go, distributed systems, and advanced cryptographic techniques.

Highest-signal resume keywords

• Expert-Level Proficiency In Go
• Experience With Elliptic Curve Cryptography
• Reliable Distributed Systems Experience
• Experience With BFT Consensus Algorithms
• Deep Experience With Cosmos SDK

ATS Optimization Keywords

Hard Skills

• Threshold Signature Schemes
• ECDSA Key Generation
• Rust Programming
• Go Programming
• Elliptic Curve Cryptography
• BFT Consensus Algorithms
• MPC Signing Sessions
• Zero-Knowledge Proofs
• Pedersen Commitments
• Confidential Computing

Industry Keywords

• FinTech
• Payment Systems
• High-Frequency Trading
• Privacy-Preserving Ledgers

Tools & Technologies

• Trusted Execution Environments
• AMD SEV-SNP
• Intel TDX
• RATS Architecture
• WebAuthn
• Cosmos SDK
• CometBFT
• Ristretto255
• Gnark-crypto