C++ Developer | Quantitative Research and Trading Firm (Digital Assets)

Techfellow Limited; Greater London; On-site; GBP 80,000 - 350,000; Full time

Job summary

A leading quantitative trading firm is looking for a Core C++ Developer to enhance their trading infrastructure. This role involves optimising execution speed and system scalability while working with top engineers. The ideal candidate will have extensive experience in high-performance C++ development and a passion for low-latency systems. Flexible working options are available, with a preference for on-site collaboration.

Qualifications

• 3+ years of experience in high-performance, low-latency C++ development.
• Expert-level proficiency in modern C++ (C++17/20).
• Hands-on experience with real-time, high-throughput systems.

Responsibilities

• Design and optimise high-performance, low-latency trading infrastructure.
• Develop and fine-tune order execution and risk management systems.
• Collaborate with quantitative researchers and traders to improve execution speed.

Skills

C++

Networking Performance

Multi-threading

Concurrency

Linux Performance Tuning

Job description

C++ Developer | Quantitative Research and Trading Firm (Digital Assets)

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[Up to c. £350k Comp Package (or equivalent) | Flexible Working Options - On-Site Preference]

Are you a C++ expert with a passion for building ultra-low-latency trading infrastructure? Our client, a global quantitative trading firm, is seeking a Core C++ Developer to push the boundaries of high-performance computing. This role offers the opportunity to optimise execution speed, enhance system scalability, and collaborate with top-tier engineers to develop cutting-edge trading systems.

Key Responsibilities

1. Design and optimise high-performance, low-latency trading infrastructure using modern C++ (C++17/20).
2. Develop and fine-tune order execution and risk management systems for robustness and efficiency.
3. Optimise CPU performance, memory management, and multi-threaded applications for peak efficiency.
4. Implement and refine networking performance, including TCP/UDP tuning and kernel bypass techniques (AF_XDP, DPDK).
5. Benchmark, profile, and debug real-time systems to reduce latency and maximise throughput.
6. Collaborate with quantitative researchers, traders, and infrastructure engineers to improve execution speed.
7. Ensure fault tolerance and system resilience for seamless continuous trading.

What You Bring...

1. 3+ years of experience in high-performance, low-latency C++ development.
2. Proven ability to optimise network performance (TCP/UDP), including kernel bypass techniques.
3. Expert-level proficiency in modern C++ (C++17/20) and deep systems programming knowledge.
4. Strong experience in multi-threading, concurrency, and Linux-based performance tuning.
5. Hands-on experience with real-time, high-throughput systems in latency-sensitive environments.
6. (Preferred) Familiarity with C# code generation for trading infrastructure automation.
7. (Preferred) Experience with AWS cloud environments, on-prem clusters (HTCondor), or quantitative trading systems.

Additional Details

• Seniority level: Mid-Senior level
• Employment type: Full-time
• Job function: Information Technology and Engineering
• Industries: Financial Services and Capital Markets