Java Jobs in Web3

Company: G-20 Group

Job Title: Quantitative Analyst & Developer – Trading Systems (Crypto/FX/Futures)

Experience Level: Mid-Senior

Type: Full Time, Permanent

Location: On-site, Central London, UK or Zurich, Switzerland

About G-20 Group

G-20, headquartered in Switzerland, is a technology-driven trading firm developing the next generation of automated trading systems across electronic and proprietary strategies. Our platform spans market making, statistical arbitrage, and other systematic strategies, with a strong emphasis on innovation, real-time infrastructure, and AI integration. We operate at the intersection of quantitative research, software engineering, and trading.

Role Overview

We’re expanding our core team with a Quantitative Analyst & Developer – Trading Systems, someone who combines strong mathematical modelling ability with pragmatic software engineering and a deep curiosity for markets.

Key Responsibilities

• Design, develop, and maintain quantitative trading strategies and tools across crypto, FX, and futures markets
• Build and optimize high-performance automated market making and execution systems
• Work with traders and researchers to prototype, test, and productionize models for pricing, volatility, risk, and execution
• Contribute to core trading infrastructure: data ingestion, order management, strategy engines, analytics, and monitoring
• Use AI and modern ML tools (including LLMs) to accelerate development, improve prediction, and enrich tooling
• Perform empirical research, back testing, and performance analysis using historical and real-time data
• Integrate new exchanges, protocols, and data sources into the system

• Able to deliver working projects and solutions effectively and quickly
• Postgraduate degree (MSc/PhD) inPhysics, Mathematics, Computer Science, Engineering, or Mathematical Finance
• Strong software engineering skills inC#(orC++orJava) with experience writing robust, performant, and scalable code
• Solid understanding offinancial markets, macroeconomics, and trading workflows
• Hands-on experience in abank, trading firm, hedge fund, or market-making environment, ideally with exposure to traders or risk managers
• Familiarity withderivatives,yield curves,pricing models, orrisk analytics
• Able to balance theory with practical implementation under real-time constraints
• Fluent English language ability (written and spoken).

Preferred / Desirable Experience

• Familiarity withcrypto,FX, orfuturestrading, including exchange APIs and market microstructure
• Understanding oforder book dynamics,liquidity provision, andlatency-sensitive systems
• Practical experience withdata analysis,time series, andstatistical learning
• Exposure tocloud computing,containers(Docker), ordistributed systems
• Working knowledge ofmachine learning,AI assistants, and/orLLM integrationfor code generation, data summarization, or signal extraction
• Experience innumerical optimization,stochastic calculus,Monte Carlo methods, orPDE-based model

Right to Work

This role will be basedin either our London office or Zurich office, based on the location of the selected candidate. Only candidates who possess the right to work in the UK or Switzerland need apply.

Join G-20 and be a part of a team that is at the forefront of the crypto market, driving innovation and excellence in the financial sector. Apply today to leverage your expertise in a dynamic and rewarding role.

Closing date for applications is EOD Friday April 18th. Thank you for your interest. Due to a high volume of applications, only candidates who meet the above criteria will be considered.

• Opportunities for professional growth and development within a leading global trading firm.
• A dynamic and collaborative working environment.
• Exposure to cutting-edge trading technology and global markets.