Senior Software Engineer; Space

C++ Software Engineer – High-Performance Systems The Company

We’re partnering with a cutting‑edge engineering‑led company building advanced platforms for complex, real‑world environments across space and defense.

Their work sits at the intersection of high‑performance computing, signal processing, and scalable software systems, with a strong emphasis on speed, reliability, and real‑world deployment.

This is a hands‑on C++ Software Engineering role focused on building and optimising high‑performance systems.

You’ll take ownership of core software components, working on performance‑critical code and helping evolve systems from flexible Python‑based environments into robust, production‑grade C++.

This is less about algorithm design, more about engineering systems that make those algorithms run fast, reliably, and at scale
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• Develop high-performance software primarily in C++ for compute-intensive applications
• Translate and optimise Python‑based tooling into efficient, production‑grade systems
• Design clean, scalable architectures for performance-critical environments
• Profile and optimise code (multi-threading, memory management, vectorisation)
• Work closely with cross‑functional engineering teams to ensure software integrates seamlessly into wider systems
• Improve tooling, testing, and overall developer workflows

• Strong commercial experience in C++ (modern standards preferred)
• Solid working knowledge of Python (for tooling, prototyping, or legacy systems)
• Experience building high-performance, scalable software systems
• Strong understanding of software architecture, data structures, and performance optimisation
• Comfortable working close to hardware or in complex engineering environments

• Work on genuinely complex engineering problems where performance matters
• High ownership and real impact on core systems
• Collaborative, engineering‑first environment