Alex Metelli

Engineering systems that make complex work easier to verify.

Backend and blockchain infrastructure engineer with around five years of experience building developer tools, AI workflows, data systems, and correctness-sensitive infrastructure.

  1. Who is Alex Metelli?

    I am a software engineer with five years of experience, including professional work at Nethermind and independent work on public developer tools, product systems, and protocol experiments.

  2. What does he specialize in?

    I specialize in backend systems, developer infrastructure, AI-assisted engineering tools, verification workflows, and blockchain infrastructure. My work often combines APIs, local-first CLIs, automation, observability, and correctness-sensitive systems.

  3. What has he built?

    I have built AgentReceipt, Skills Doctor, RitualAI, Ask Siargao, AggSandbox, Voyager Verifier, and Horizon Protocol. Together, they cover signed agent evidence, skill auditing, AI workflow tooling, evidence-bounded travel recommendations, contract verification, local multichain infrastructure, and deployed blockchain protocols.

  4. What evidence supports those claims?

    The work is documented through technical case studies and, where available, public repositories, tagged releases, source documentation, live products, and deployed protocol records. My professional evidence includes Nethermind work on Starknet tooling, contract verification, cross-chain infrastructure, and developer-experience automation.

  5. What kind of engineering work does he take on?

    I take on remote software engineering roles and selected consulting projects involving backend services and APIs, developer infrastructure, AI-assisted workflows, verification tooling, or blockchain systems. I am most useful when I can own a concrete technical scope from architecture and implementation through validation, deployment, and support.

Working principles

  • Correctness

    Build systems that are reliable, predictable, and easy to reason about.

  • Clarity

    Write code and docs that reduce complexity and help teams move faster.

  • Delivery

    Ship practical solutions with focus, pace, and attention to long-term impact.

Evidence behind the work

Each case study records the system, Alex's role, key decisions, current state, and links to inspectable artifacts.