De-Fi Intern
G-20 Group
De-Fi Intern
G-20 Group
Cross-asset trading and investment firm
G-20 Group · Zürich, Switzerland · Full-time · Posted 2026-10-15
Workplace: on_site
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
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.
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Cross-asset trading and investment firm
G-20 Group is a financial firm active in trading, treasury management, advisory, and digital-economy investments. The company works across delta-one and derivatives markets while managing liquidity, risk, capital, and selected strategic investments. It serves institutional counterparties, portfolio companies, and participants in global financial markets. Its operating model centers on specialist trading, research, engineering, finance, legal, and operational teams. Teams work across trading, quantitative research, software engineering, risk, treasury, operations, and compliance.
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