30 days left

De-Fi Engineer

G
G-20 Group

Zürich, Switzerland London, New York, Hong Kong

Full Time Posted: Aug 20, 2026
Shubhada Pande
Shubhada Pande
@ShubhadaJP
Job description

G-20 Group is a cross-asset trading firm headquartered in Switzerland, trading delta-one and derivatives markets globally. Combining startup agility with institutional-grade experience across proprietary trading, advanced technology, and quantitative finance, G-20 Group operates at the leading edge of financial and digital asset markets.

Role Summary

G-20 Group is seeking an innovative De-Fi Developer & Engineer to join a close-knit technology, math, and trading-focused team. In this role, you will work alongside quantitative researchers and systematic traders to co-develop high-performance trading algorithms, build execution and connectivity architecture, and perform deep on-chain research across decentralized protocols to scale automated market-making and trading strategies.

Key Responsibilities

  • Algorithm & Platform Co-Development: Co-develop proprietary trading algorithms and platform architecture, implementing innovative trade execution and connectivity solutions.

  • DeFi & On-Chain Research: Conduct thorough research and quantitative analysis of DeFi protocols using on-chain data to support and optimize market-making and trading strategies.

  • Smart Contract & Low-Level Innovation: Innovate at the lowest layers of blockchain infrastructure, evaluate protocol mechanics, and review/audit smart contracts.

  • Large-Scale Deployment: Architect, deploy, and maintain large-scale technological stacks and production-grade Web3 infrastructure.

Requirements & Qualifications

Must-Haves

  • Blockchain Architecture: Proven advanced understanding of EVM internals or other major blockchain ecosystem architectures and execution environments.

  • Core Programming Skills: Proficient in at least 2 of the following languages: C++, Python, TypeScript, Rust (Solidity is an asset).

  • Blockchain Languages: Working proficiency in Web3 development languages (Golang, Rust, Solidity, Move, or Yul).

  • Smart Contract Expertise: Experience in smart contract audits with a drive to innovate at the protocol/node level.

  • Delivery Track Record: Demonstrated ability to build, deploy, and support large-scale technological stacks and finish complex engineering projects.

  • Communication: Fluent English communication skills in high-velocity collaborative environments.

  • Work Authorization: Must possess pre-existing right to work in Zürich, London, New York, or Hong Kong (no company visa sponsorship provided).

Nice-to-Haves

  • Hands-on experience with on-chain analytics and DeFi protocols across multiple L1/L2 chains.

  • Background in fast-paced quantitative finance, market making, or high-frequency proprietary trading environments

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