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C# Developer - Fixed Income e-Trading Front Office

A Fixed Income electronic trading platform used daily by traders: real-time pricing, RFQ, execution, with genuine front office skills development.

  • Paris / Île-de-France
  • Permanent contract
  • 3+ years of experience
  • Capital markets
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context

An e-trading platform used by traders

The team builds and evolves a strategic Fixed Income electronic trading platform within an international investment bank. It covers the full pre-trade front office chain: real-time pricing, RFQ and RFS, auto-quoting, electronic execution, STP booking and post-trade monitoring.

The constraints are those of a market-facing application: performance, reliability, auditability and software quality.

the role

From pricing to execution, with a real learning curve

  • Developing and evolving the interest rate swap pricing engine.
  • Implementing business workflows: pricing, quoting, execution, booking, monitoring.
  • Building the RFQ and RFS modules along with auto-quoting mechanisms.
  • Integrating market data feeds and contributing prices to internal and external order books.
  • Price validation and consistency modules: anomaly detection, automatic fallback, auditability.
  • Optimising latency-sensitive components over a high-performance messaging bus.
  • Contributing to the migration from .NET Framework to modern .NET versions.

technical environment

Technical environment

  • C#
  • .NET Framework and .NET 8
  • WPF / MVVM
  • Solace PubSub+
  • Market data
  • NUnit
  • Appium
  • TDD
  • Azure DevOps
  • SonarQube

The context is heavily industrialised: automated testing, continuous integration, progressive deployments.

who we are looking for

Who we are looking for

  • C# developer with at least three years of experience.
  • Initial exposure to the front office or to pricing and e-trading applications is an advantage.
  • Failing that, a clear interest in real-time systems, performance and critical applications.
  • A wish to understand the front office business and the effect of code in production.
  • Professional English.

why this role

Why this role is worth your time

  • It is a genuine entry point into the front office, on a pre-trade topic where performance matters.
  • The application is used daily by traders: feedback is immediate.
  • Skills development is progressive and supported, on e-trading, pricing and .NET performance.
  • You get the full technical context before any interview with the client.

Applying

Does this role fit ?

Your application is read by the founder, and the technical interview is run with an expert in your field. If the role has closed by the time you write to us, we will tell you, and we will look at what else is open.

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