About the role
Core C++ Developer – Crypto High-Frequency Trading
About Selini:
Selini is a global trading firm focused on systematic trading and venture investing.
Overview
We are seeking an exceptional Core C++ Developer to contribute to the development and optimization of our high-performance trading systems. This role focuses on building ultra-low-latency infrastructure, optimizing execution speed, and ensuring robust system reliability. The ideal candidate will have deep expertise in modern C/C++, systems programming, and high-performance computing.
Key Responsibilities • Design, develop, and optimize low-latency, high-performance trading infrastructure in modern C/C++ (latest standards). • Implement efficient and scalable trading algorithms, order execution, and risk management systems. • Deep understanding of exchange connectivity standards for market data and order entry • Optimize CPU performance, memory management, and multi-threaded applications. • Collaborate with quant researchers, traders, and infrastructure engineers to improve system performance. • Profile, benchmark, and debug real-time systems to minimize latency and maximize throughput. • Maintain robust and fault-tolerant system components for continuous trading operations.
Required Qualifications • Expert-level proficiency in C++, with a strong grasp of modern C++ features (C++17/20/23/26). • Extensive experience in low-latency, high-performance systems programming. • Deep understanding of networking (TCP/UDP), concurrency, and multi-threading. • Strong experience in Linux-based development and performance tuning. • Experience with real-time, high-throughput systems where performance is critical. • Background in crypto or traditional finance trading systems
Soft Skills & Culture Fit • Candidates with exceptional academic or industry backgrounds. • Strong analytical skills and ability to work in high-pressure, real-time environments. • Collaborative team player who enjoys solving complex engineering problems.
We’re a close-knit team that values: • High ownership and initiative • Curiosity, intellectual honesty, and rapid learning • Clear, direct communication • Working together toward shared goals — no ego, no politics
Compensation & Benefits: • Very competitive compensation, with strong upside based on contribution and performance • Competitive holiday allowance • Free daily Deliveroo lunch • High-spec office and technology • Team socials • Global company offsites and development opportunities
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