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Core C++ Developer – Crypto High-Frequency Trading
Location: New York, in office full time
About Selini:
Selini is a global trading firm focused on systematic trading and venture investing - all within the digital assets space.
OverviewWe 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.
- 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
- Candidates from top-tier institutions or recognized as domain experts are preferred.
- 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
- 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
Selini New York, New York, USA Office
New York, NY , United States
What you need to know about the NYC Tech Scene
As the undisputed financial capital of the world, New York City is an epicenter of startup funding activity. The city has a thriving fintech scene and is a major player in verticals ranging from AI to biotech, cybersecurity and digital media. It also has universities like NYU, Columbia and Cornell Tech attracting students and researchers from across the globe, providing the ecosystem with a constant influx of world-class talent. And its East Coast location and three international airports make it a perfect spot for European companies establishing a foothold in the United States.
Key Facts About NYC Tech
- Number of Tech Workers: 549,200; 6% of overall workforce (2024 CompTIA survey)
- Major Tech Employers: Capgemini, Bloomberg, IBM, Spotify
- Key Industries: Artificial intelligence, Fintech
- Funding Landscape: $25.5 billion in venture capital funding in 2024 (Pitchbook)
- Notable Investors: Greycroft, Thrive Capital, Union Square Ventures, FirstMark Capital, Tiger Global Management, Tribeca Venture Partners, Insight Partners, Two Sigma Ventures
- Research Centers and Universities: Columbia University, New York University, Fordham University, CUNY, AI Now Institute, Flatiron Institute, C.N. Yang Institute for Theoretical Physics, NASA Space Radiation Laboratory
