Galvan Santiago Daniel

Backend Engineer | Blockchain Infrastructure

Buenos Aires, Argentina

GitHub Twitter / XDiscord: dub_znMessage on Telegram

🟢Aping In

Backend engineer with 5+ years of experience building backend systems, internal tools, release pipelines, smart contracts, and production infrastructure. Experienced with Java/Spring Boot, TypeScript/Node.js, PostgreSQL, monitoring, workflow automation, and payment-related systems. Currently building backend infrastructure for Jokers of Neon, a production onchain card game on Starknet.

Work Preferences

Salary

USD 65,000

Skills

Starknet9/10

TypeScript9/10

Cairo (Starknet)9/10

Java8/10

JavaScript8/10

PostgreSQL (8/10)Spring Boot (8/10)Smart Contracts (8/10)REST APIs (8/10)Workflow Automation (7/10)Foundry (7/10)Node.js (7/10)Solidity (7/10)Supabase (7/10)Jenkins (6/10)Rust (6/10)Noir (5/10)Python (5/10)Firebase (4/10)Datadog (4/10)

Work Experience

Founding Backend Engineer / Co-founder

Caravana Studio

Jun 2024 — Present

Built backend infrastructure for Jokers of Neon, a production onchain card game live since December 2025 with 150k+ Starknet mainnet transactions and ~250 monthly active users. Designed and maintained APIs, workers, services, monitoring, payment-related flows, and production integrations. Developed Cairo smart contracts on Starknet and integrated onchain game logic with backend systems. Built modular architecture for scalability and maintainability. Tech: TypeScript, Node.js, Cairo, Starknet, Cartridge SDK, RevenueCat, Firebase, Appsflyer, Supabase, PostgreSQL, Datadog.

Smart Contract Developer

Lambda Class

Aug 2023 — Jan 2024

Created foundational Cairo 1 libraries including signed integers and fixed-point decimals. Collaborated on migration of Uniswap V2 from Solidity to Cairo. Developed tests using Foundry and supported deployment workflows on Starknet testnet. Worked with low-level Cairo patterns and contract architecture. Tech: Cairo 1, Solidity, Starknet, Foundry.

Open Source Contributor

OnlyDust / Starknet Ecosystem

Sept 2022 — Present

Contributed to 10+ Starknet open-source projects. Submitted 30+ pull requests across smart contracts, backend tooling, and developer infrastructure. Improved production-grade codebases by fixing issues, adding features, writing tests, and improving developer experience. Tech: Cairo, Solidity, Rust, Starknet, TypeScript.

Software Engineer Analyst

Mercado Libre

Jan 2021 — Mar 2023

Built and maintained Java/Spring Boot internal services supporting the release pipeline for Mercado Libre and Mercado Pago mobile apps. Automated engineering workflows to reduce manual steps and operational errors. Monitored production pipelines with Datadog. Contributed to code reviews, GitHub-based workflows, and technical documentation. Tech: Java, Spring Boot, Kibana, Jenkins, GitHub, Datadog.