Senior C++ Software Engineer

Senior C++ Software Engineer | £60,000 - £80,000

We're working with a high-performance FinTech innovator on this exciting opportunity. They are pushing the boundaries of low-latency trading technology, crafting sophisticated software that maximizes hardware capabilities to deliver lightning-fast financial transactions.

In this role, you will take a lead position in the SDLC, bridging the gap between hardware and software. You'll work closely with FPGA and electronics specialists to build hyper-optimized systems that thrive under high-pressure, real-time demand.

The Role

• Lead the design, implementation, and deployment of highly-optimized, low-level C++ software running on Linux.
• Collaborate with FPGA and Hardware Design teams to ensure software is perfectly tuned to the underlying silicon and CPU architecture.
• Drive the technical direction of the engineering team, providing mentorship to junior developers and setting coding standards.
• Spearhead clever optimizations to minimize latency and maximize dependability for mission-critical financial applications.
• Explore and integrate modern systems languages like Rust into the existing high-performance ecosystem.

What You'll Need

• Deep, "under-the-hood" knowledge of C++ and the ability to write deterministic, high-performance code without falling into common performance pitfalls.
• Expert-level understanding of Linux systems, including concurrency, multithreading, and network protocols (TCP/IP, UDP).
• Solid grasp of Computer Science fundamentals and CPU architectures to ensure deep software-hardware alignment.
• Professional experience or a strong demonstrable interest in Rust for systems programming.
• A strong academic background (Computer Science, Electronics, or Physics) and the communication skills to work across cross-functional engineering teams.

What's On Offer

• Competitive base salary of £60,000 - £80,000 plus a performance-based bonus scheme.
• The chance to work at the absolute technological forefront of the financial sector in the Cambridge tech hub.
• A culture committed to the long-term nurturing and professional development of every employee.
• High-impact work where your code directly influences the speed and success of global financial markets.

Apply via Haystack today!