Senior C++ Developer | High Growth Start Up

Senior C++ Software Engineer | UK

We’re partnering with one of the UK’s most exciting high-growth technology companies as they enter a defining stage of their journey.

Backed by world-class investors whose portfolios include Anthropic, Figma, and Revolut, this business is building for long-term success with an exceptional engineering culture shaped by talent from Palantir, Microsoft, and BAE Systems.

As a Senior C++ Software Engineer, you’ll join a high-calibre team at a pivotal stage of growth, taking ownership of the development of core systems and helping shape the technical foundations of the business. This is an opportunity for an experienced C++ Developer who enjoys solving complex engineering problems, influencing architectural decisions, and delivering software that operates at scale.

Working closely with engineering leadership and cross-functional teams, you’ll design and build high-performance software, optimise complex platforms, and contribute directly to the company’s long-term technical direction using modern C++.

What We’re Looking For

• Strong academic background in Computer Science, Engineering, Mathematics, Physics, or a related technical discipline from a leading university.
• Strong commercial experience as a C++ Developer with deep expertise in modern C++, software engineering principles, algorithms, and data structures.
• Experience developing high-performance systems, low-latency applications, backend platforms, or scalable infrastructure using C++.
• Strong understanding of systems programming, multithreading, concurrency, performance optimisation, and distributed systems.
• Ability to deliver clean, reliable, maintainable, and production-grade software.
• Exposure to TypeScript and/or JavaScript is beneficial but not essential.
• Excellent communication skills with the ability to work across technical and non-technical teams.
• A proactive mindset with strong ownership and the desire to contribute beyond day-to-day development.
• Comfortable working in fast-paced environments and tackling ambiguous technical challenges.

What’s On Offer

• Highly competitive compensation package benchmarked against leading technology firms.
• Meaningful equity participation with strong long-term upside.
• Opportunity to work alongside exceptional engineers from world-class academic and industry backgrounds.
• Direct influence over system architecture, technical strategy, and engineering standards.
• A collaborative and ambitious environment where your impact is immediate and visible.
• The opportunity to play a key role in scaling one of the UK’s most exciting technology companies.

If you’re a Senior C++ Engineer looking for an opportunity to build scalable systems, solve technically complex challenges, and work with an exceptional team using C++, we’d love to hear from you.