Mid-Level C++ Developer – Low Latency & Real-Time Systems

WSN
Greater London
3 weeks ago
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Mid-Level C++ Developer – Low Latency & Real-Time Systems

WSN Greater London, England, United Kingdom

Location:London, UK

Employment Type:Full-Time (Consulting-to-Perm)

About WSN & the Opportunity:

WSN is seeking aMid-Level C++ Developerwith expertise inlow-latency, real-time systems, and market data processingto join our client, a top-tier hedge fund with locations inLondon and Miami. This is a long-term consulting role (2+ years) with a high likelihood of conversion to a permanent employee.

Role Overview:

As aMid-Level C++ Developer, you will be responsible for designing, developing, and optimizingultra-low latency trading systems, working closely with traders and quantitative researchers. You will be instrumental in improvingmarket data processing, execution systems, and real-time trading infrastructure.

Key Responsibilities:

  • Develop and optimizehigh-performance C++ applicationsforlow-latency, real-time trading environments.
  • Implement new features and enhancements formarket data handling, including decoding, managing, and utilizing financial data from various feeds (e.g., Reuters, Bloomberg, direct exchange feeds).
  • Optimize code forCPU/memory efficiency, network performance, and hardware utilization.
  • Work onmulti-threading, network programming (TCP/IP, UDP), and inter-process communication.
  • Troubleshoot, debug, and resolveperformance bottlenecksin production systems.
  • Collaborate withquants, traders, and infrastructure teamsto improve trading strategies and execution.
  • Ensuresystem stability, scalability, and high availabilityfor mission-critical trading applications.

Requirements:

  • 5-10 years of professional C++ development experiencein alow-latency, real-time environment.
  • Strong experience withmarket data feeds and APIs(e.g., Reuters, Bloomberg, direct exchange feeds), including the ability todecode and manage market data efficiently.
  • Financial services background, preferably at ahedge fund, proprietary trading firm, or investment bank.
  • Expertise inmulti-threaded programming, networking (TCP/IP, UDP), and low-latency optimizations.
  • Strong understanding ofdata structures, algorithms, and computer architecture.
  • Experience working in aLinux environmentwith performance tuning and debugging tools.
  • Ability toaccept requirements, ask clarifying questions, propose and discuss design tradeoffs, and write high-quality code independently.
  • Awareness ofperformance tradeoffsin system design beyond just small code snippets.
  • Scripting proficiency (Python, Bash)for automation and testing.
  • Degree in Physics, Engineering, Mathematics, STEM, or Computer Sciencefrom a top university.

Preferred Qualifications:

  • Knowledge ofadvanced performance tuning.
  • Hands-on experience writingnetworking codeand understanding lower-level networking concepts.
  • Familiarity withadvanced system performance tuning concepts.
  • Experience working withReuters code(though direct market data handling is a higher priority).
  • Basic Pythonskills.
  • Windows C# familiarity(though 98% of work is in Linux, some Windows support is required).
  • Understanding ofFIX protocol, order management systems, and high-frequency trading.
  • Experience withhardware acceleration(FPGA, GPU, kernel bypass).
  • Knowledge ofcloud computing, microservices, and containerization (Docker, Kubernetes).
  • Familiarity withdistributed systems and real-time messaging frameworks.

This role is an exciting opportunity for ahighly skilled C++ developerto work on cutting-edge trading systems in a fast-paced, high-performance environment. If you have a passion forlow-latency programming, market data processing, and high-performance computing, we encourage you to apply!

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