Senior Software Engineer (C++) Remote (Spain)
High-Performance Trading Systems
Up to £180k + bonus + equity
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We're hiring a Senior C++ Engineer to work on the systems that sit at the heart of a global 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 xbhjioe 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