Jobs in London - Senior Rust Developer (London) • UK

Company: G-20 Group

UK

About G20 Group The G-20 Group is a pioneer in Quantitative Trading systems in cross-asset markets. Headquartered in Switzerland, we operate at the intersection of Quantitative Research, Software Engineering and Trading. The team combines a startup mindset with extensive experience in proprietary Trading, Technology and Quantitative Finance. Role Overview The G-20 London Office is seeking a highly skilled and motivated Senior Core Rust Developer to further develop and maintain the proprietary, in-house trading engine.We are seeking a candidate with a strong background in building large-scale low-latency systems. The role involves maintaining daily trading operations as well developing scalable, high-performance code, optimizing system architecture and modularity to ensure seamless operations and functionality.The ideal candidate will be self-driven, motivated, responsible and highly responsive, working independently to develop and improve the existing code base, while collaborating closely with diverse cross-functional teams of stakeholders and fellow developers. We are looking for someone with strong expertise in python programming, debugging, and system optimization, who is passionate about delivering practical, high-quality, PnL-focused solutions.The primary focus for this role will be working on core engine components, including trading engines, pricing, market making strategies and underlying trading infrastructure.Key ResponsibilitiesTrading Engine Development: Develop the existing and new components within the trading engine while maintaining overall system design.Ownership of Engine Components: Grow into ownership of existing or newly developed trading engine components, such as pricing, market-making, hedging, etc.Performance Optimization: Continuously monitor and optimize trading engine performance.Systems Refactorization: Work on appropriate code modularization, versioning, deployment and test processes.Trading Infrastructure Development: Develop, improve and maintain overall trading infrastructure, including reference and market data, trades and balance dissemination services.Trading Engine Operations: Ensure that day-to-day trading operations run smoothly.Collaboration with Trading: Work directly with the trading team to understand their needs and deliver appropriate solutions that support the firm's strategic goals.RequirementsEducation: Bachelor’s or Master’s degree in computer sciences, Computer Science, Engineering, or a related field.Experience: At least 7+ years' experience in software development, ideally in a high-paced trading environment.Personal Qualities:self-driven, motivated, responsible and highly responsive individual.mature enough to work collaboratively on the existing code base.ability to work effectively in a fast-paced trading environment.strong and tactful communication skills, both verbal and writtenTech Skills:Proficiency in Rust. Python/C++ is a bonus.Proficiency in Unix based systems.Experience of cloud-based platforms (e.g. AWS).Experience with real-time data messaging (e.g. Redis, websockets).Experience with CI/CD tools, Jenkins, Supervisor and docker in particularFast problem-solving skills, combined with attention to detailsPreferred / Desirable Experience Familiarity with low latency and high throughput systems.Experience in the finance or cryptocurrency sectors is nice but not mandatory.Experience with high-paced production or trading environments.Deadline for applications: January 9th, 2026Location and Right to Work: This role will be based full time from our London office. Only candidates who possess the right to work in the UK 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.