Alex Metelli
Alex Metelli

Backend / Developer Tools Software Engineer

Actively looking · Member since 13 Jun 2026
Message
Location
United Kingdom
Desired salary
from 50 USD/hourly
Work preference
Full Time, Contract, Part Time
Experience level
Not set

About

Professional summary

I am a software engineer with 5 years of experience building backend systems, developer infrastructure, blockchain tooling, and AI-assisted engineering workflows. I focus on practical engineering work that improves reliability, automation, and developer productivity.

I have professional experience at Nethermind, where I worked on blockchain infrastructure across Starknet, cross-chain, ZK, and verification workflows. My work included backend systems and developer tooling in Rust, TypeScript, Python, Cairo, and Solidity.

I have contributed extensively to open source, including merged pull requests to Voyager Verifier, Starknet Foundry, Supabase CLI, Apache DataFusion, Dojo Engine, and Apibara DNA. These contributions covered CLI behavior, diagnostics, configuration handling, release automation, regression coverage, and infrastructure improvements.

I also publish packages and tools for developer workflows, blockchain payments, Rust SDKs, and verification utilities. My work includes npm CLIs, SDKs, and Rust crates that support automation, payment-protected APIs, and blockchain-related development tasks.

I build products as well, including AgentReceipt, a local-first CLI for observing AI coding sessions and exporting signed review evidence, and ScopePilot, a SaaS product built with TypeScript, Bun, Astro, React, Hono, PostgreSQL, Drizzle, Stripe, and Cloudflare.

My core stack includes TypeScript, Go, Rust, Python, SQL, PostgreSQL, APIs, CLIs, CI/CD, tests, and local/deployed infrastructure. I am especially interested in backend, platform, and developer-tools roles where I can improve engineering systems and developer experience.

Skills

11 capabilities

Experience

Career history

Software Engineer, Blockchain Infrastructure Nethermind

Built backend systems and developer tooling in Rust, TypeScript, Python, Cairo, and Solidity across Starknet, cross-chain, ZK, and verification workflows. Authored 27 merged PRs to Voyager Verifier, improving API clients, file/source resolution, config/history/status/batch workflows, Dojo support, docs, release automation, and public library extraction. Authored 7 merged PRs to Starknet Foundry, including sncast verify Voyager support, verifier file-gathering UX, network-selection fixes, payload compatibility, e2e coverage, and migration to the Voyager verifier library.

Education

Learning history
No education data available.

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