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