C. Justice Mace

Software Engineer · n0x

Full-stack engineer with a backend focus. Lately I’m building with agents, designing harnesses/agent tooling, building agentic workflow systems and open-source tools. Before that I spent several years on blockchain protocols, applied cryptography and distributed systems: I designed the Taralli protocol and led its engineering team, and helped deploy Unlink protocol across multiple blockchains.

I have the most experience with Rust, Python, Typescript and Solidity/EVM.

GitHub ↗X ↗LinkedIn ↗

GitHub activity

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5,890 contributions in the last year

Recently active

Skills

Languages
Rust · TypeScript · Solidity · Python
Stack
Tokio · Node.js · Svelte · React · Postgres · SQLite · EVM · Circom/Groth16
Infra
Fly.io · Hetzner · Vercel · Cloudflare
Agents
Claude · Codex · Pi · OpenCode · Amp · OpenRouter

Interests

  • Agent harnesses and tooling
  • Applied cryptography & zero-knowledge proofs
  • Distributed systems
  • Markets and financial engineering