Martín Casais

Available to hire

Smart contract engineer specialized in stablecoin and payment infrastructure across EVM and Solana, shipping end-to-end blockchain protocols and researching security in competitive audit contests.

About

Smart contract engineer specialized in stablecoin and payment infrastructure across EVM and Solana, shipping end-to-end blockchain protocols and researching security in competitive audit contests.

Active security researcher building AI-assisted audit workflows and reproducible exploit proof-of-concepts on forked mainnet, with regulatory/financial crypto knowledge (MiCA, accounting and compliance) supporting production-grade deployments.

  • Joined July 2026

Languages

  • EnglishAdvanced
  • Spanish; CastilianFluent
  • GalicianFluent

Industry experience

  • Financial Services
  • Software & Internet
  • Professional Services
  • Education

Projects · 4

Payment rails for autonomous AI agents on Base. An ERC-8004 identity registry with on-chain reputation, plus x402 USDC micropayments gating API access through the HTTP 402 flow.

Built the full stack: Solidity contracts, TypeScript backend and frontend. The payment gateway verifies on-chain settlement before releasing the API response.

Verified contract: https://www.twine.net/signin
Repo: https://www.twine.net/signin

  • Blockchain Developer
  • Full Stack Developer

A collateralized stablecoin protocol (CDP): core ERC-20 plus 8 composable modules including a price oracle with fallback feeds, Dutch auction liquidations with commit-reveal for MEV resistance, a repeg engine and a rate limiter.

Gas-optimized hot paths, with unit, integration and invariant test suites in Foundry. Whitepaper included.

Repo: https://www.twine.net/signin

  • Back-End Developer
  • Blockchain Developer

Work experience

Product Engineer (AI & Automation) · PYH Global Services HoldingMar 2026 – Jul 2026 · 5 mos

Shipped AI-assisted automation and internal tooling for legal, administrative and grant/tender workflows. Owned features end to end, from requirements to production, in a small high-ownership team.

Education

B.S. Business & Technology · Universidade de Santiago de Compostela2020 – 2026

Thesis: machine learning based media sentiment analysis applied to Solana price behavior (Python, NLP).

Higher Technician, Administration & Finance · Liceo la Paz2018 – 2020

Accounting, financial mathematics, advanced Excel.

Certifications and awards

Ethereum Developer Bootcamp (Alchemy University)2025
Solana Builder (HackQuest × Solana Foundation on-chain credential)2025

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