About checkra1n.dev and the Developer Behind It
checkra1n.dev is the personal portfolio of checkra1n (GitHub: checkra1neth), a vibe coder, AI agent developer, and Solidity/Web3 engineer based in Ukraine. This site is not affiliated with checkra.in, the iOS jailbreak tool.
Who Is checkra1n?
checkra1n (alias checkra1neth) is a blockchain developer and AI architect with more than 15 years in crypto, active since mining Bitcoin as a teenager in 2011. He orchestrates AI coding agents — Claude Code and Cursor — to ship production software: smart contracts, trading bots, and full-stack applications, a workflow known as vibe coding. He works remotely worldwide in English and Ukrainian.
What This Site Contains
- Intel — a practitioner blog on vibe coding, Claude Code CLI, Cursor vs Claude Code, and Web3 war stories (English and Ukrainian)
- Project log — Polymarket hedged-pairs bots in Rust, Uniswap v4 hooks on Base, AI smart contract audit pipelines, MCP skills
- Resume — interactive Solidity developer resume with PDF download
- Signal — contact channels for freelance and contract work
- Developers — API documentation, OpenAPI spec, and machine-readable resources for agents
Disambiguation
The name checkra1n collides with the well-known iOS jailbreak tool hosted at checkra.in. This website, checkra1n.dev, and the GitHub account checkra1neth belong to an independent developer and have no connection to the jailbreak team, its tooling, or any other project using similar names.
How the Site Itself Is Built
This portfolio is built with React, TypeScript, Three.js, and Vite, deployed on Vercel with server-side rendering for crawlers and AI agents. Every page is available as HTML and via Accept: text/markdown negotiation; blog content ships through a fully automated seven-stage AI pipeline (analyze, write, edit, translate, build, deploy, announce) documented in the Intel blog.