C++ Developer – High Frequency Trading, HFT Systems

Job not on LinkedIn

🕒 January 12

🏢🏡 London – Hybrid

⏰ Full Time

🟡 Mid-level

🟠 Senior

🔙 Backend Engineer

🇬🇧 UK Skilled Worker Visa Sponsor

This company has sponsored UK Skilled Worker visas in the past.

👻 Ghost score 40%

What it means: how likely this posting is sitting open without active hiring.How to read it: 60% or higher means we think this is a ghost. Lower scores are less of a worry.How we score it: age, reposts, open roles vs team size, how fast jobs close, and whether pay is listed.Fine print: an estimate from public data, not a judgment of the company. Real jobs can score high, so treat it as a hint, not a fact.

Apply Now

Find Similar Remote Jobs

Set Up Email Alert For New Jobs

📊 Check your resume score for this job

Improve your chances of getting an interview by checking your resume score before you apply.

Upload Resume

MARGO

WebsiteLinkedInAll Job Openings

201 - 500 employees

Founded 2005

💼 Consulting

🛡️ Insurance

📦 Logistics

Consulting • Insurance • Logistics

MARGO is a digital consulting firm specializing in high-complexity IT missions across various sectors. As data, AI, and digital experts, MARGO partners with ambitious clients to drive progress through digital transformation. With a focus on industries such as finance, insurance, energy, and technology, MARGO provides expertise in artificial intelligence, cloud transformation, data architecture, and software engineering.

📋 Description

• Design, develop and optimise ultra-low latency C++ trading components • Work on critical execution paths for market data processing and order routing • Implement lock-free and wait-free algorithms • Optimise memory allocation, cache locality and CPU utilisation • Reduce jitter and tail latency • Analyse and optimise CPU behaviour (branch prediction, cache misses, NUMA effects) • Work closely with infrastructure and network teams on kernel bypass and user-space networking • Profile systems at instruction-level and hardware-counter granularity • Ensure correctness, determinism and stability of production trading systems • Participate in production releases and live deployments • Investigate latency regressions and production anomalies • Maintain rigorous operational discipline

🎯 Requirements

• Strong experience in C++ development for performance-critical or low-latency systems • Proven background in HFT or ultra-low latency trading environments • Deep understanding of CPU architecture, caches and memory models • Strong knowledge of concurrency, memory ordering and Linux internals • Experience working close to hardware and network layers • Strong production mindset and sense of ownership • Exposure to C# in trading, control or monitoring systems (highly valued) • Experience with market data feed handlers or order gateways (highly valued) • Prior exposure to market making or proprietary trading environments (highly valued) • Experience with FPGA-assisted or hybrid architectures (highly valued)

🏖️ Benefits

• Access to elite HFT and ultra-low latency trading environments • Technically extreme and intellectually demanding engineering assignments • Clear separation between execution-critical and supporting systems • Human-sized consultancy with very high technical standards • Long-term positioning on rare, high-value low-latency engineering skillsets