C# Developer - Risk Technology

London Until 8/22/2026 H-1B sponsor history First posted December 17, 2025 Last posted May 22, 2026
Job description

Maven is a market-leading proprietary trading firm deploying its own capital across discretionary, systematic, and market-making strategies. Backed by deep expertise in trading, technology, and research, we are relentlessly focused on improving liquidity across global listed derivatives. Through advanced execution and pricing technologies, we improve how financial markets operate. 

You will join a small team, collaborating with traders, risk specialists and developers to help optimise and automate and enhance our risk systems, including reporting, position management, building new and innovative solutions.  The team’s main responsibility is for middleware and backend services; we also develop full-stack solutions, including web-based front-ends.

What you’re going to do:

  • Design and develop sound solutions to support critical business functions with a focus on testability, maintainability, performance and resilience
  • Craft great code and tests, using automation as your friend
  • Analyse, capture and communicate your design decisions
  • Interact and collaborate with stakeholders, SRE’s and Infrastructure engineers 

What you’re going to need:

  • Strong analytical and system design skills
  • Excellent C# ability including strong focus on testing processes
  • .NET Core; CI/CD, containerization (Docker and/or Kubernetes) 

Nice to have: 

  • Knowledge of financial markets & securities (particularly equities, bonds, futures and options)
  • Derivative pricing and risk management
  • Python libraries (pandas, NumPy etc)
  • SQL and large data handling experience
  • Modern Front-end UI development experience, especially React and TypeScript
  • Event-driven design, DDD, CQRS and/or EventSourcing experience for Multithreading, distributed design, message queues (e.g. Kafka, RabbitMQ), fault-tolerance, Prometheus, Grafana

WHAT WE CAN OFFER YOU

  • Competitive compensation 
  • Group Pension plan 
  • Annual discretionary bonus 
  • Fully catered breakfast, lunch and snacks. 
  • 25 days’ annual leave
  • Informal dress code 
  • Private healthcare and life assurance
  • Cycle-to-work scheme
  • Private Gym
About this role

Summary

Develop and optimize risk systems, middleware, backend, full-stack solutions in a trading environment

Job title

C# Developer - Risk Technology

Experience level

not specified

Industry

finance

Location requirements

London; remote work not specified

Salary

Not specified

Visa sponsorship

H-1B sponsor history

Management role

No

Skills & keywords

Required skills

C#.NET CoretestingCI/CDDockerKubernetes

Preferred skills

financial marketsderivative pricingPythonSQLReactTypeScriptevent-driven designCQRSmessage queuesfault-tolerancePrometheusGrafana

Specializations

C#.NET Coreautomationsystem designrisk management
Locations

Structured locations inferred from the posting.

London, UK

Work arrangement unknown City