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Senior Software Engineer

Understanding Recruitment

madrid, madrid, Spain Full-time May 25, 2026
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Vacancy Description

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 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, me...

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