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# DeFi Software Engineer

- **Company:** Kopius
- **Location:** Latinoamérica, Spain (Remote available)
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), Algorithmic Trading, C++ (Programming Language), Python (Programming Language), Oracle (Applications), Software Engineering, Build Management, Ethereum
- **Published:** November 14, 2026
- **Apply:** https://m.jobatlas.es/adview/e4dbfd1b22cbdba8d3ca46d58d9a679f.html

## About the Role

* Advanced English, spoken and written, for daily work with a U.S.-based team
 * Clear communication, and the ability to work through tight, shifting deadlines calmly
 * Comfort with quantitative work - you are not math-shy

Technical Requirements

 * Hands-on, professional experience in DeFi and/or crypto. This is the core requirement
 * Strong Python or Java skills
 * Experience with smart-contract development on Ethereum, Solana, or similar chains
 * Working knowledge of cryptography fundamentals, such as public/private key pairs and how they interact

Nice to Have

 * Financial products knowledge: futures, and especially options
 * Background in risk management or trading systems
 * Experience with Hyperliquid or similar DeFi platforms
 * A polyglot mindset - right tool for the right job; a solid C++ foundation is welcome
 * A quantitative or scientific background, such as physics, including option pricing or stochastic modeling

## Description

We are partnering with a major U.S. financial markets exchange to build a new, independent engineering stream focused on decentralized finance. The work includes an Oracle system to price and value assets in prediction markets, plus the infrastructure behind the client's tokenization initiatives. You will join a small pod of two to five developers led by a hands-on Team Lead, with an embedded QA engineer and an embedded Product person., * Design and build back-end services and smart-contract components for DeFi and tokenization products

 * Contribute to an Oracle system that prices and values assets in prediction markets
 * Apply financial and risk-management concepts to bespoke, niche problems
 * Share domain knowledge across the team and with the client's internal engineers
 * Work closely with QA and Product throughout the development cycle