About G-20 Group 

G-20 Group is a leading cross-asset trading firm active in delta-one and derivatives markets. Established in 2010, G-20 offers liquidity solutions, treasury management, and institutional advisory services. We are supported by an outstanding team of professionals, with a robust global presence in EMEA, Americas, and APAC. 

Role Overview

We’re expanding our core team with a Quantitative Developer – Trading Systems and UI role, and we are looking for someone who combines strong analytical ability with pragmatic software engineering and a deep curiosity for markets.

Responsibilities

• Help traders to analyze and visualize their trading activities
• Work with trading and engineering to prototype, test, and integrate pricing and quoting models
• Contribute to core trading infrastructure: data ingestion, analytics, and monitoring
• Perform empirical research, back testing, and performance analysis using historical and real-time trading data
• Design, develop, and maintain user-friendly interfaces (UIs) for our analytical, monitoring and control applications
• Use AI and modern ML tools (including LLMs) to accelerate development, improve prediction, and enrich tooling

• Graduate degree (MSc/PhD) in Computer Science, Engineering, or similar
• At least 3+ years or more of experience in software development, ideally in a high-paced trading environment.
• Strong software engineering skills in python and typescript/React.js with experience writing robust, performant and scalable code
• Self-driven, motivated, responsible and highly responsive individual
• Ability to work effectively in a fast-paced trading environment
• Able to deliver working projects and solutions effectively and quickly
• Basic understanding of financial markets and trading workflows
• Able to balance theory with practical implementation under real-time constraints
• Fluent English language ability (written and spoken)

Preferred / Desirable Experience:

• Familiarity with crypto, FX, or futures trading and market making
• Familiarity with pricing models and risk analytics
• Understanding of order book dynamics, liquidity provision, and latency-sensitive systems
• Practical experience with data analysis, time series, and statistical learning
• Hands-on experience in a trading firm, hedge fund, or market-making environment, ideally with exposure to traders or risk managers
• Exposure to cloud computing, containers (Docker), or distributed systems
• Working knowledge of machine learning, AI assistants, and/or LLM integration for code generation, data summarization, or signal extraction

Location and Right to work: This role will be based in our London office. Only candidates who reside in the UK within a commutable distance to London, and who possess the pre-existing right to work in the UK without needing 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.

About G-20 

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 

As an Options Trader at G-20 Group, you will be responsible for managing and optimizing options trading strategies across various markets. You will work with a team of quantitative analysts and developers to implement trading models and make informed, data-driven decisions. This role offers a unique opportunity to contribute to the growth of a highly successful trading firm in a fast-paced and dynamic environment. 

Key Responsibilities 

• Develop, implement, and optimize options trading strategies across global markets. 
• Analyze market data and leverage quantitative models to identify profitable trading opportunities. 
• Monitor and manage risk exposures, ensuring strategies align with risk management protocols. 
• Collaborate with data scientists, quants, and other traders to refine and improve trading algorithms and strategies. 
• Stay up-to-date on market trends, news, and economic events that could impact options prices and volatility. 
• Execute trades and manage positions effectively, ensuring optimal execution and liquidity. 
• Contribute to the continuous improvement of G-20 Group’s trading systems and technologies. 

• Degree in Finance, Mathematics, Physics, Computer Science, Engineering, or a related field from a top-tier university. 
• Strong background in options trading with a solid understanding of the options market and strategies. 
• Proven track record of generating consistent profits (PnL >$2m for more than 3 years) 
• Experience with quantitative trading and the ability to apply data analysis to trading decisions. 
• Strong knowledge of financial markets, particularly options pricing, volatility, and risk management. 
• Exceptional analytical and problem-solving skills with the ability to make quick, data-driven decisions. 
• Excellent communication and teamwork skills, with the ability to collaborate effectively across teams. 
• A results-driven, proactive, and self-motivated approach. 

Preferred / Desirable Experience 

• Proficiency in programming languages such as Python, C++, or similar (preferred). 

 

Right to work: This role can be based from our New York, Chicago or London offices. Only candidates who reside in and who possess the pre-existing right to work in the US or London without requiring company sponsorship need apply.  

Join G-20 Group and be a part of a team that is at the forefront of financial markets, driving innovation and excellence in the sector. 

About G-20 Group 

G-20 Group is a leading cross-asset trading firm active in delta-one and derivatives markets. Established in 2010, G-20 offers liquidity solutions, treasury management, and institutional advisory services. We are supported by an outstanding team of professionals, with a robust global presence in EMEA, Americas, and APAC. 

Role Overview

We are seeking a skilled and dedicated Cloud Engineer to join our London team, to own and optimize our cloud infrastructure and security. This role is crucial for ensuring the efficiency, security, and low latency of our cloud environment. The ideal candidate will have specialized expertise in AWS and experience designing and implementing cloud setups tailored for low latency trading. 

While the cloud infrastructure is the primary remit of this role, we expect a portion of time to be also dedicated to security: environment hardening, threat monitoring, and contributing to our broader compliance posture. 

Key Responsibilities

• Cloud Ownership: Manage and maintain G-20 cloud infrastructure across AWS and Azure, including provisioning, configuration, and ongoing optimisation.
• Networking Optimization: Design and implement scalable, reliable cloud architectures in line with best practices and business requirements.
• Cost Optimization: Monitor cloud environments for cost, performance, and availability, taking proactive steps to improve each.
• Security: Implement and enforce cloud security best practices, including network segmentation, encryption, and access controls and related policies.
• Monitoring: Monitor network reliability and latencies, security alerts and events across endpoint and cloud platforms, triaging and escalating incidents as appropriate.
• Compliance Support: Support compliance efforts relating to frameworks such as Cyber Essentials, ISO 27001, or GDPR.
• Continuous Improvement: Stay current with the evolving cloud and threat landscape and share relevant intelligence with the team.

Education: Bachelor’s or Master’s degree in computer sciences, Computer Science, Engineering, or a related field.

Experience:

• Hands-on experience with AWS in a professional context. Azure is a bonus.
• Solid understanding of networking fundamentals (TCP/IP, DNS, firewalls, VPNs).
• A relevant degree, apprenticeship, bootcamp, or self-study background evidenced by cloud certification (e.g. AZ-900, AZ-104, AWS Cloud Practitioner, AWS SysOps, or equivalent).
• Exposure to security monitoring, vulnerability scanning, or network analysis tooling.
• Exposure to cyber security concepts evidenced by certification or practical experience (e.g. CompTIA Security+, CySA+, CEH, or equivalent)
• Scripting ability in Python and Bash, with a desire to develop this further.
• Strong analytical and problem-solving skills, with keen attention to detail.
• Ability to communicate technical concepts clearly to non-technical stakeholders, and to collaborate effectively across functions.
• Highly ethical, trustworthy, and able to operate with discretion and confidentiality.
• Commercially aware and adaptive to the evolving needs of a dynamic financial services business.
• Strong written and verbal communication skills 

Preferred / Desirable Experience:

• Experience in designing and implementing cloud solutions for HFT or similar high-performance, low latency environments.
• Familiarity with cloud-native security tooling (e.g. security centres, policy management, or threat detection services).
• Experience with infrastructure-as-code tooling (e.g. Terraform or ARM templates).
• Awareness of common attack vectors (phishing, malware, social engineering) and basic defensive practices.
• Familiarity with AI-assisted security tooling and a genuine interest in how AI is shaping both the threat landscape and defensive capabilities.
• Participation in Capture the Flag (CTF) competitions or other practical security challenges.

Location and Right to work: This role will be based in our London office. Only candidates who reside in the UK and possess the pre-existing right to work in the UK without needing 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.

About G-20 Group 

G-20 Group is a leading cross-asset trading firm active in delta-one and derivatives markets. Established in 2010, G-20 offers liquidity solutions, treasury management, and institutional advisory services. We are supported by an outstanding team of professionals, with a robust global presence in EMEA, Americas, and APAC. 

Role Overview

We are seeking a highly skilled and motivated Core C++ Developer to join our London team 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 as 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 C++ 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 Responsibilities

• Trading 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 infrastruc-ture, 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.

Education: Bachelor’s or Master’s degree in computer sciences, Computer Science, Engineering, or a related field.

Experience: At least 3+ years or more of 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 written.

Tech Skills:

• Proficiency in C++ (Cxx-17).
• Familiarity with Rust is a significant bonus, Python desired.
• Proficiency in Unix based systems.
• Experience of cloud-based platforms (AWS).
• Experience with real-time data messaging (websockets, Redis).
• Experience with CI/CD tools, Jenkins, Supervisor and docker.
• Fast problem-solving skills, combined with attention to details.

Preferred / Desirable Experience:

• Familiarity with low latency and high throughput systems.
• Experience in the finance or cryptocurrency sectors.
• Experience with high-paced production or trading environments.

Location and Right to work: This role will be based in our London office. Only candidates who reside in the UK and possess the pre-existing right to work in the UK without needing 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.

About G-20 Group 

G-20 Group is a leading cross-asset trading firm active in delta-one and derivatives markets. Established in 2010, G-20 offers liquidity solutions, treasury management, and institutional advisory services. We are supported by an outstanding team of professionals, with a robust global presence in EMEA, Americas, and APAC. 

Role Overview 

We are seeking two highly organized, discrete, and proactive Executive Assistants: one at Full-Time (100%) and another at Part-Time (60%) to provide comprehensive administrative support to our executive leadership team. In this role, you will work closely with the CEO and Deputy-CEO along with other leaders to manage their schedules, coordinate meetings, handle correspondence, and ensure that administrative and organizational matters are efficiently managed. 

You will act as a key point of contact for internal and external stakeholders, ensuring that communication flows seamlessly and that priorities are met in a timely manner. The ideal candidate is an experienced, dependable, detail-oriented professional who thrives in a dynamic environment and can anticipate needs before they arise. 

Key Responsibilities 

• Provide administrative support to members of the Executive team.  
• Manage calendars, schedule and coordinate meetings, and organize appointments. 
• Handle correspondence, prepare documents, and manage communication flows on behalf of executives. 
• Arrange and coordinate travel plans, itineraries, and expense reporting. 
• Support with payment of invoices, reimbursements, and other administrative or financial tasks as required. 
• Prepare meeting materials, and ensure follow-up on action items. 
• Liaise with internal departments and external partners to ensure smooth coordination of executive activities. 
• Maintain confidentiality and handle sensitive information with the highest degree of professionalism. 

• 5+ years’ experience as an Executive Assistant, Personal Assistant, or in a comparable administrative role, with a strong preference for the financial/trading sector. 
• Excellent organizational and multitasking skills with strong attention to detail.  
• High level of integrity, discretion, and professionalism.  
• Strong communication skills (both written and verbal) in English.  
• Proficiency in MS Office and common collaboration tools (e.g. Excel, Word, Outlook). 
• A proactive, hands-on attitude and the ability to anticipate needs and take initiative. 

Preferred / Desirable Experience 

• Fluency in German is a strong plus; additional languages are an advantage. 
• Flexibility to adapt to changing priorities and schedules. 

Location and Right to work: We are hiring for our Zurich office with the expectation of the candidates being on-site. Only candidates who meet the requirements, live within commutable distance to Central Zurich and who possess the pre-existing right to work in Zurich without requiring company sponsorship need apply (Swiss national, B/C permit or equivalent).  

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.