Software Engineer C++

Matchtech; Stevenage; On-site; GBP 50,000 - 70,000; Full time

Job summary

A leading company in the Defence & Security sector is seeking a skilled Software Engineer C++ for a contract role in Stevenage. The position involves developing and maintaining software in a Linux environment, engaging with high-speed data flows, and working on complex multi-threaded applications. Candidates should have extensive experience with C++ and Linux, as well as familiarity with real-time systems.

Qualifications

• Extensive experience in C++ development in a Linux environment.
• Proficiency in C# for tooling, test interfaces, or Windows components.
• Experience with real-time data systems and high-speed digital protocols.

Responsibilities

• Designing and developing real-time test and capture software on Linux systems.
• Integrating and interfacing with high-speed SFPDP cards.
• Conducting performance analysis, debugging, and optimisation of real-time systems.

Skills

Software Engineer

C++

Linux

Tools

Git

Job description

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Our client, a prominent entity in the Defence & Security sector, is currently seeking a skilled Software Engineer C++ for a contract role in Stevenage, Hertfordshire.

Key skills required for this role:

Software Engineer, C++, Linux

Important:

Software Engineer, C++, Linux

Our client, a prominent player in the Defence & Security sector, is currently seeking a skilled Software Engineer C++ for a contract role in Stevenage, Hertfordshire. This position involves working 100% on-site, developing and maintaining software in a Linux environment. You will engage with high-speed real-time data flows, and complex multi-threaded processing pipelines.

Key Responsibilities:

• Designing and developing real-time test and capture software on Linux systems using C++
• Integrating and interfacing with high-speed SFPDP cards across multi-channel data pipelines
• Architecting and implementing robust, scalable, and maintainable multi-threaded applications
• Defining and implementing data sequencing and synchronisation logic for deterministic capture and replay
• Working with hardware teams to ensure seamless integration and timing alignment
• Leading and contributing to system integration, verification, and testing at both component and system levels
• Conducting performance analysis, debugging, and optimisation of real-time systems
• Documenting architecture, interface definitions, and test procedures

Job Requirements:

• Extensive experience in C++ development in a Linux environment
• Proficiency in C# for tooling, test interfaces, or Windows components
• Experience working with real-time data systems, particularly 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
• Familiarity with software sequencing frameworks or custom state machines
• Strong experience with integration, system test, and debugging complex interactions between software and hardware
• Understanding of software design principles, memory management, and performance optimisation
• Experience with version control systems (e.g., Git) and CI/CD pipelines
• Experience with SFPDP specifically in defence, aerospace, or data acquisition contexts
• Knowledge of FPGA-based data acquisition systems and synchronisation methods
• Familiarity with unit testing frameworks, automated test rigs, or hardware-in-the-loop setups
• Experience developing or integrating with real-time operating systems (RTOS) or using real-time Linux extensions

This role is actively managed by

Matchtech, a STEM Recruitment Specialist with over 40 years’ experience