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Senior C# Developer – Pricing Engines

Netherlands, Amsterdam · Job Posted December 09, 2025
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Job Description

Join a fast-paced trading tech environment where your C# code powers real-time pricing for traders and automated systems. You’ll help modernise and optimise a high-performance pricing engine running on bare metal, focused on FX, bonds and rates-where every microsecond matters. Join a multidisciplinary squad owning the full lifecycle of a mission-critical pricing engine-design to deployment to performance optimisation within a collaborative, international trading environment.

Job Responsibility

  • Build high-performance C# services on .NET Core for real-time pricing and risk
  • Refactor and migrate existing C# and Java components into a unified .NET Core platform
  • Optimise multithreading, memory, GC and network performance on bare-metal servers
  • Implement curve handling and curve location for FX, bonds and rates
  • Integrate with trading tools, market data feeds and external pricing/execution platforms
  • Ensure safe, efficient price distribution via internal messaging
  • Contribute to automated testing, CI/CD and observability in a 24/7 trading setup
  • Work in an agile DevOps team with shared support responsibilities

Requirements

  • Extensive experience with C#/.NET in complex back-end or trading systems
  • Proven low-latency, high-throughput engineering expertise (ideally in pricing or market data)
  • Deep knowledge of concurrency, async IO, performance tuning, profiling, TCP/binary protocols
  • Strong understanding of financial markets: FX spot/forwards/swaps, bonds, IR swaps, curves, PV/DV01
  • Experience working with front-office stakeholders
  • Clear communication and the ability to simplify complex concepts

Nice to have

Bonus: Java and Linux familiarity

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