Senior Software Engineer (C++)
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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 integral 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 xhfqzwm 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