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Software Engineer – C++ (Fully Remote) at Octo Horizon. Location Information: . About OctoHorizon. . OctoHorizon is an independent high-frequency trading (HFT) firm focused on developing advanced algorithmic strategies for digital asset markets. Our approach combines rigorous quantitative research with low-latency engineering to identify and capture short-lived market inefficiencies.. . We are a globally distributed, fully remote team built on principles of autonomy, technical excellence, and continuous iteration. Engineers at OctoHorizon work at the intersection of performance, infrastructure, and algorithmic trading — with direct and measurable impact on production systems and trading results.. . Role Overview. . We are seeking an exceptional . C++ Software Engineer. to design and implement high-performance systems that underpin our trading infrastructure. In this role, you will be responsible for building and optimizing real-time systems that handle market data, order execution, and strategy deployment with minimal latency and maximum reliability.. . This is a hands-on engineering role with end-to-end ownership of critical components in a live trading environment. The ideal candidate has deep expertise in modern C++ and a strong understanding of system-level performance.. . Responsibilities. . . . Design, develop, and maintain high-performance, low-latency trading systems in C++.. . . . Implement core infrastructure for market data ingestion, order routing, risk checks, and strategy execution.. . . . Profile, benchmark, and optimize code to meet stringent latency and throughput requirements.. . . . Collaborate with quantitative researchers and infrastructure engineers to support deployment of real-time strategies.. . . . Build robust, fault-tolerant systems capable of operating reliably under varying market conditions.. . . . Maintain clean, well-tested code and contribute to architectural decisions across the stack.. . . . Take full ownership of components from design through production support.. . . . Minimum Qualifications. . . . 3+ years of professional software engineering experience, with a focus on performance-critical systems.. . . . Expert-level proficiency in . modern C++ (C++17 or newer). , including templates, memory management, and concurrency.. . . . Strong understanding of systems programming concepts (CPU architecture, networking, threading, I/O, etc.).. . . . Experience with Linux systems development, including debugging and performance tuning tools.. . . . Demonstrated ability to write clean, efficient, and maintainable code in production environments.. . . . Strong problem-solving skills and attention to detail.. . . . Comfortable working independently in a fast-paced, fully remote team environment.. . . . Preferred Qualifications. . . . Prior experience in high-frequency trading, low-latency systems, or real-time financial infrastructure.. . . . Experience implementing market data handlers, matching engines, or order gateways.. . . . Familiarity with exchange protocols (FIX, WebSocket, REST) and crypto-native APIs.. . . . Background in mathematics, physics, computer science, or a related technical field.. . . . Experience with performance benchmarking and micro-optimization at the hardware level (e.g., cache-aware design, CPU pinning, instruction pipelining).. . . . What We Offer. . . . Fully remote role. – work from anywhere with a reliable internet connection.. . . . High-impact engineering. – direct influence on production trading and strategy performance.. . . . Flat team structure. – rapid decision-making, no bureaucracy.. . . . Access to cutting-edge infrastructure. – hardware, datasets, and profiling tools.. . . . Competitive compensation. – including base salary and performance-based bonuses.. . . . Engineering autonomy. – full ownership of systems and architectural direction.. . . . How to Apply. . If you're passionate about building performance-critical systems in C++ and want to work on real-time infrastructure that drives live trading strategies, we encourage you to apply.. . Please submit your CV, and optionally include links to code samples, open-source contributions, or a portfolio of relevant work.