IT & Software

Senior Software Engineer

Spectrum IT Recruitment

Southampton · Hampshire · United Kingdom

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Overview

In this Senior Software Engineer role, you will lead C/C++ development for 5G NR PHY algorithms, focusing on high-performance, multithreaded software. You will collaborate with hardware, architecture and system-test teams to tackle performance challenges and deliver reliable software for a demanding technical environment. You’ll drive optimisation, integration and automated testing within a cross-functional context, shaping the software that underpins advanced 5G technology. A strong ownership mindset and technical judgement are key to success.

Responsibilities
  • Take technical ownership of C/C++ software development used to run and test 5G NR PHY algorithms
  • Drive software performance improvements through optimisation and multithreading
  • Lead the integration of software components and resolution of complex technical issues
  • Develop and maintain automated testing and CI processes
  • Collaborate with hardware, architecture and system-test teams
  • Support interoperability testing with customers, vendors and operators
  • Provide senior technical input into reviews and wider software engineering decisions
Key requirements
  • Extensive commercial experience developing software in C or C++
  • Strong software engineering fundamentals and sound technical judgement
  • Proven experience with multithreaded or high-performance software
  • The ability to take ownership of complex performance and optimisation challenges
  • Strong collaboration with cross-functional teams
  • Technical leadership and input into reviews
  • Problem solving and initiative-taking
  • C/C++
  • Multithreading
  • High-performance software

Reference: WJ-747_31289746 · Posted 11 Nov 2026, 08:43 PM

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