Arnau Espin

Software engineer · Web3, distributed systems, full stack · 📍 Andorra

I'm a software engineer working across frontend, backend, and full stack. I build on-chain systems, developer tooling, and distributed services across Solana and Ethereum, currently at UNCX.

Experience

2025–present
Software Engineer · UNCX
Rust on Solana (Anchor, Pinocchio), Carbon indexers, liquidity lockers; Next.js, tRPC, TypeScript, Web3.js
2025–2026
Full-Stack Developer · Software Agency (accounting)
Two full-stack apps; React, Next.js, TypeScript, PostgreSQL, Clerk
2023–2025
Software Engineer · Omnia Protocol
Payments & RPC microservices, REST APIs, Solidity; TypeScript, Rust, Node.js, PostgreSQL, Redis, Docker, AWS
2022–2023
Software Engineer · Boxfish Studio
NFT staking dashboard, Solana SPL faucet; TypeScript, Next.js, Rust, Web3.js, Metaplex, MongoDB, AWS
2020–2022
Systems Engineer · AG Solution
MES platform, QA engineering; AngularJS, .NET, SQL Server

Open Source Contributions

txtx · Solana Foundation
superbank · Solana RPC

Projects

OpenOCR · Local-LLM OCR, Rust + Freya
Fragmentor · Solana NFT fragmentation (Anchor)
Git Horse · Cross-platform Git GUI (Tauri)

Awards

Sigma Vault · 1st prize, ETHGlobal (Euler Labs)