Remote C++ Software Engineer

Salary: £30,000 - 55,000 per year

Requirements

• Extensive experience in C++ development in a Linux environment.
• Proficiency in C# for tooling, test interfaces, or Windows components as needed.
• Proven experience working with real-time data systems, preferably involving SFPDP or other high-speed digital protocols.
• Demonstrable skills in multi-threaded and concurrent programming.
• Experience with low-level I/O, DMA, or driver-level interactions with PCIe cards or similar.
• Familiarity with software sequencing frameworks or custom state machines for test execution.
• Strong experience with integration, system test, and debugging complex interactions between software and hardware.
• Strong understanding of software design principles, memory management, and performance optimisation.
• Experience with version control systems such as Git and CI/CD.
• Desirable: experience with SFPDP specifically in defence, aerospace, or data acquisition contexts.
• Desirable: knowledge of FPGA-based data acquisition systems and synchronisation methods.
• Desirable: familiarity with unit testing frameworks, automated test rigs, or hardware-in-the-loop setups.
• Desirable: experience developing or integrating with real-time operating systems or using real-time Linux extensions.

Responsibilities

• Design and develop real-time test and capture software on Linux systems using C++.
• Integrate and interface with high-speed SFPDP cards across multi-channel data pipelines.
• Architect and implement robust, scalable, and maintainable multi-threaded applications.
• Define and implement data sequencing and synchronisation logic to support deterministic capture and replay.
• Work with hardware teams to ensure seamless integration and timing alignment between software and capture cards.
• Lead and contribute to system integration, verification, and testing at both component and system levels.
• Conduct performance analysis, debugging, and optimisation of real-time systems.
• Document architecture, interface definitions, and test procedures to support handover and formal test activities.

Technologies

• Architect
• C#
• CI/CD
• FPGA
• Git
• Hardware
• Support
• Linux
• PCIe
• Windows
• C++
• Embedded

More

We are a world-class defence organisation based in Stevenage, Hertfordshire, and we are looking to recruit a C++ Software Engineer subcontractor on an initial 12-month contract with a very likely extension. The role is onsite four days per week, with a four-day working week also acceptable from Monday to Thursday. We offer an hourly rate of £67.00 plus overtime at time and a quarter for hours worked over 37 per week. The contract is inside IR35 and the interview process is a one-stage video interview. Our Development Simulation software department delivers software solutions for non-production test systems, equipment simulation systems, and software support for manufacturing and product integration.

last updated 27 week of 2026