Senior .NET Backend Engineer for Quant Platform

Mondrian Alpha; Greater London; On-site; GBP 120,000 - 180,000; Full time

Job summary

Mondrian Alpha is seeking a seasoned C#/.NET Software Developer to join the Quantitative Development team in London. This role focuses on building a high-performance backend platform for calibrating, publishing, and distributing live and end-of-day curve and volatility surface models across investment teams.

You will design scalable services, extend modular architecture, and improve reliability while collaborating with researchers and infrastructure teams.

Qualifications

• 5+ years' commercial software development experience.
• Strong C# and modern .NET development skills.
• Experience building distributed systems using event-driven architectures or message buses.
• Good understanding of financial markets; exposure to market data platforms is highly advantageous.
• Experience with ASP.NET Core and modern backend service design.
• Familiarity with DevOps practices, CI/CD and automated deployment.
• Experience with Linux, Docker and container orchestration technologies is advantageous.
• Excellent communication skills and a passion for building clean, scalable software.

Responsibilities

• Design, develop and enhance a modular platform for publishing live and end-of-day curve and volatility surface models.
• Build scalable backend services using C#, F# and modern .NET / ASP.NET Core technologies.
• Develop new platform capabilities with a strong focus on extensibility, resilience and clean software architecture.
• Collaborate closely with Quantitative Developers, researchers and infrastructure teams to deliver robust production systems.
• Build monitoring, anomaly detection and model quality tooling to improve platform reliability.
• Help deploy distributed services into production while improving observability and operational resilience.
• Provide technical support and continually enhance the platform based on business feedback.

Skills

C#

Backend development

Distributed systems

ASP.NET Core

F#

Docker

Linux

DevOps principles

Tools

.NET

C#

F#

Docker

Kubernetes

Linux

Job description

Mondrian Alpha is seeking a seasoned C#/.NET Software Developer to join the Quantitative Development team in London. This role focuses on building a high-performance backend platform for calibrating, publishing, and distributing live and end-of-day curve and volatility surface models across investment teams.

You will design scalable services, extend modular architecture, and improve reliability while collaborating with researchers and infrastructure teams.