De-Fi Internship (Zurich)

***Important****: Please only apply if you are able to work on-site at our Zurich office every working day. This is a fully office-based role with no option for remote work.* **About G20 Group** G-20 Group is a cross-asset trading firm headquartered in Switzerland, trading delta-one and derivatives markets globally. We combine startup agility with institutional-grade experience in proprietary trading, technology, and quantitative finance. **Role Overview** We are looking for a motivated and technically curious DeFi Developer & Engineer Intern to join our global trading firm. This is an opportunity to gain hands-on experience in blockchain technology, decentralized finance (DeFi), and quantitative trading within a collaborative, technology-driven environment. Working alongside experienced engineers, quantitative researchers, and traders, you will contribute to the development of blockchain-based solutions, trading infrastructure, and DeFi applications. The ideal candidate will have strong programming fundamentals, a genuine interest in cryptocurrency markets, and a desire to develop their technical expertise in a fast-paced trading environment. **Responsibilities** * Support the development and improvement of trading algorithms, infrastructure, and blockchain connectivity solutions. * Research and analyze DeFi protocols, blockchain ecosystems, and on-chain data to identify opportunities for innovation. * Assist in developing, testing, and deploying smart contracts and blockchain-based applications. * Explore emerging blockchain technologies, protocols, and development frameworks. * Collaborate with engineers and traders to support the implementation of automated trading and market-making solutions. * Monitor developments across DeFi protocols and cryptocurrency markets, sharing relevant findings with the team. * Participate in code reviews, debugging, testing, and technical documentation. **Requirements** * Currently pursuing or recently completed a Bachelor's or Master's degree in Computer Science, Computer Engineering, Mathematics, or a related technical discipline. * Strong programming fundamentals, with proficiency in at least one of the following: Python, C++, Rust, TypeScript, or Solidity. * Basic understanding of blockchain technology, smart contracts, and decentralized finance. * Familiarity with Ethereum, EVM-compatible chains, or other blockchain ecosystems. * Interest in cryptocurrency markets, algorithmic trading, and financial technology. * Strong analytical and problem-solving skills, with an eagerness to learn and tackle complex technical challenges. * Ability to work collaboratively in a fast-paced environment. * Fluent English communication skills. **Preferred / Desirable Experience** * Academic projects, personal projects, internships, or contributions to open-source blockchain applications. * Exposure to smart contract development using Solidity or other blockchain programming languages. * Familiarity with DeFi protocols, decentralized exchanges (DEXs), or on-chain analytics. * Experience with Web3 development tools and frameworks such as Foundry, Hardhat, or ethers.js. * Basic understanding of quantitative trading, market making, or financial markets. * Familiarity with Git, APIs, and software development best practices. **Locations and Right to work**: This role will be based out of our Zurich office. Only candidates who possess the pre-existing right to work in Switzerland without company sponsorship need apply. Join G-20 and be a part of a team that is at the forefront of financial markets, driving innovation and excellence in the sector.