Senior Software Engineer (C++) Remote (Spain) High-Performance Trading Systems Up to £180k + bonus + equity

We’re hiring a Senior C++ Engineer to work on the systems that sit at the heart of a general trading platform. This is a backend, systems-focused role centred around performance-critical engineering — building the infrastructure that enables fast, reliable, and secure execution at scale.

The Role

You’ll be working on the core framework and performance-critical components that underpin the trading engine.

Your responsibilities will include: Designing and building low-level systems that support high-frequency transaction processing Developing robust, reusable components used across the trading platform Engineering for low latency, high throughput, and system resilience Working on concurrent and distributed systems operating under real production load Identifying and resolving bottlenecks across CPU, memory, and network layers Writing efficient, maintainable,



and well-tested C++ code Partnering with cross-functional teams to deliver scalable technical solutions

What They’re Looking For Strong experience building production systems in C++ Background working on high-performance, low-latency, or high-throughput systems Solid understanding of multithreading, concurrency, and memory management Experience working in Linux-based environments Familiarity with distributed systems or large-scale architectures Experience with performance tuning and profiling at system level Exposure to other languages (e.g. Python, Java, SQL) is beneficial Interest in trading systems, financial infrastructure, or market mechanics is a plus Comfortable operating in a fast-paced, delivery-focused environment

Why This Role Strong comp (including bonus & equity) Opportunity to solve complex, performance-driven engineering problems High ownership culture Remote-first setup with a globally distributed team

📌 Senior Software Engineer (Madrid)
🏢 Talent
📍 Madrid