Senior Quant C# & React Full Stack Developer Front Office Trading House | £150,000 + Strong Bonus | Hybrid (London - City)

Senior Quant C# & React Full Stack Developer

Front Office Trading House | £140,000 + Strong Bonus | Hybrid (London – City)

A leading London-based trading house operating across energy, commodities, equities, and financial markets is seeking a Senior Quant C# & React Full Stack Developer to join its Front Office Quant Technology team .

This role offers a rare opportunity to work directly alongside quantitative analysts and traders , designing and building next-generation pricing, risk, and trading systems . You’ll play a pivotal role in a greenfield development project , contributing to architecture, design, and hands-on coding , while helping shape a high-performance trading platform used both internally and externally as a SaaS product.

The Role

As a Senior Quant Full Stack Developer, you’ll collaborate closely with Quants, Traders, and Technologists to deliver cutting-edge tools that drive trading performance and data-driven decision-making. You’ll be responsible for building real-time, event-driven applications , with end-to-end involvement — from design and architecture to testing and deployment.

This is a highly technical, front-office role that combines quantitative problem-solving , software craftsmanship , and financial systems expertise .

Key Responsibilities

• Design, develop, and maintain front-office trading and analytics systems in C# , .NET , and React .
• Partner with Quant teams to translate pricing and risk models into scalable production applications.
• Build high-performance APIs and services supporting real-time data and risk analytics .
• Contribute to system architecture and ensure solutions are performant, testable, and maintainable.
• Work closely with traders and quants to understand business needs and deliver fast, reliable solutions.
• Implement CI/CD pipelines and ensure robust DevOps practices are followed.
• Troubleshoot and optimise systems in a low-latency, high-throughput environment .
• Mentor junior engineers and contribute to Agile ceremonies and technical direction.

Required Skills & Experience

• 6+ years of professional experience in C#/.NET back-end and React/TypeScript front-end development.
• Proven experience building quantitative, event-driven, or front-office trading systems .
• Strong understanding of financial instruments , pricing , and risk sensitivities (Greeks) .
• Experience collaborating directly with Quants to implement models and tools.
• Expertise in SQL Server , MongoDB , or PostgreSQL .
• Familiarity with Azure or AWS and Infrastructure as Code (Terraform or similar).
• Strong DevOps and CI/CD experience.
• Excellent communication and stakeholder management skills, especially in Front Office environments.
• Methodical approach to software architecture and design, employing best-fit patterns for each project.

Desirable Experience

• Experience within hedge funds, banks, or trading houses .
• Knowledge of derivative pricing models and quantitative finance concepts.
• Exposure to microservices , event-driven architecture , and cloud-native applications .

What’s on Offer

• Base Salary: Up to £150,000
• Bonus: Strong annual performance bonus
• Hybrid Working: Typically 2 days per week in the London City office (Liverpool Street)
• Environment: Front Office exposure, close collaboration with Quants and Traders , cutting-edge tech stack, and a high-impact delivery culture.

If you’re a Senior C# & React Engineer passionate about working closely with Quants to build scalable, high-performance trading and risk systems , please apply or contact joe@virtuetech.io for more information.