# Cryptography Engineer (ZKP) (Blockchain) — Hanzo Careers

> Implement zero-knowledge proofs for AI verification and on-chain compute. Experience with SNARKs/STARKs required. Join the Hanzo team building the open AI cloud.

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BlockchainRemoteFull-time

# Cryptography Engineer (ZKP)

Implement zero-knowledge proofs for AI verification and on-chain compute. Experience with SNARKs/STARKs required.

[Apply for this position](#apply)[Email resume directly](mailto:careers@hanzo.ai?subject=Application%3A%20Cryptography%20Engineer%20(ZKP))

## About the Role

Hanzo brings verifiable AI to decentralized networks. As a Cryptography Engineer, you will design and implement zero-knowledge proof systems (zkML) that prove inference execution, model integrity, and verifiable credentials on-chain without revealing proprietary weights or sensitive user data.

Hanzo builds an open AI cloud — compilers, models, distributed infrastructure, and agent tooling. Our codebases are predominantly open source, and team members operate with high autonomy and end-to-end ownership.

## Key Responsibilities

Design zero-knowledge arithmetic circuits for neural network inference layers.

Optimize prover time and verifier gas costs across zk-SNARKs and zk-STARKs.

Build cryptographic primitives for W3C Verifiable Credentials and decentralized identity (DID).

Audit and formally verify cryptographic circuits and smart contracts.

## What We're Looking For

Solid mathematical background in abstract algebra, finite fields, and elliptic curve cryptography.

Hands-on experience with ZK proof frameworks (Halo2, Plonky2, Circom, Gnark, or RISC Zero).

Proficiency in Rust and/or Go.

Understanding of cryptographic security models and attack surfaces.

## Nice to Have

Experience with zkML (zero-knowledge machine learning) pipelines.

Knowledge of EVM, Solana, or Cosmos smart contract execution environments.

## Why Join Hanzo

Remote-first cultureDistributed globally. We value outcomes over hours spent at a desk.

Public, open-source outputShip work that developers worldwide inspect, clone, and build on.

High agency & ownershipDirect access to leadership and the autonomy to build whole systems.

## Apply for this Role

Submit your information below to be directly reviewed by our team.Full Name *

Email Address *

GitHub / Portfolio URL

LinkedIn / Personal Site

Location / Timezone

Background & Notes *

Submit Application

Prefer email? Send your resume to [careers@hanzo.ai](mailto:careers@hanzo.ai?subject=Application%3A%20Cryptography%20Engineer%20(ZKP))