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Open nowPosted 100 days ago

C++ Engineer

SoHo Dragon4 open roles

Where
London
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Your applicationOpen nowC++ EngineerSoHo Dragon · London

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Early applications get read.

11.8% of postings close within 7 days. Measured by our own scanner across the market.

Share of postings closed within
  1. 2.1%1 day
  2. 4.4%3 days
  3. 11.8%7 days
  4. 18.6%14 days
  5. 35.6%30 days
  6. 45.1%60 days
This job: posted 100 days ago

The posting

We are looking for a C++ engineer to design and build high‐performance, low‐latency applications that process large volumes of real‐time data. You will work on systems where microseconds and throughput matter, optimising every layer from algorithms and data structures to networking and OS interaction.

Key Responsibilities

  • Design, implement, and maintain high‐performance C++ services handling high message rates and low‐latency workloads.
  • Optimise existing components for latency, throughput, and CPU/memory efficiency.
  • Develop and tune networking, messaging, and I/O layers to handle large data volumes reliably.
  • Profile and debug performance issues at application, OS, and network levels.
  • Collaborate with quantitative, trading, and infrastructure teams (or analogous business/tech teams) to translate requirements into robust technical solutions.
  • Write clean, production‐quality code with appropriate tests and documentation.
  • Participate in code reviews, design discussions, and continuous improvement of engineering practices.

Required Qualifications

  • Strong proficiency in modern C++ (C++17/20 or later) 5+ years of experience
  • AND must haveKDB / Q Experience for large market data Modern data analysis with pytorch, pandas and modern tooling including Apache arrow Familiar with basics statistics as applied to financial research
  • Proven experience building performance‐critical, real‐time, or low‐latency systems (e.g., networking, trading systems, telemetry, gaming engines, or similar).
  • Strong knowledge of computer science fundamentals: data structures, algorithms, memory management, and optimization.
  • Experience using profiling, benchmarking, and performance analysis tools (e.g., perf, valgrind, flame graphs, CPU/memory profilers).
  • Proficiency with version control (Git) and standard build systems (CMake, Ninja, etc.).
  • Excellent problem‐solving skills and attention to detail; ability to work in a fast‐paced environment.

Preferred Qualifications

  • Experience with kernel bypass or user‐space networking technologies (e.g., DPDK, RDMA, VMA, Solarflare/OpenOnload) – helpful but not required.
  • Familiar with AI productivity-enhancing coding tools
  • Experience in financial markets, market data distribution, order routing, or exchange connectivity.
  • Experience with monitoring/telemetry for high‐performance systems (latency histograms, throughput metrics, SLAs).
  • Familiarity with scripting languages (e.g., Python, Bash) for tooling and automation.

Personal Attributes

  • Obsessed with performance, measurement, and data‐driven optimisation.
  • Comfortable owning features end‐to‐end and operating in a production environment.
  • Clear communicator who can work closely with both technical and non‐technical stakeholders.
  • Proactive, self‐directed, and able to thrive in a highly iterative environment.
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