Spectrum IT
Senior Software Engineer - C/C++
Senior Software Engineer - C/C++ at Spectrum IT, based in Southampton, South East, paying £75,000 per annum. This is a permanent role.
- Pay
- £75,000 per annum
- Hours and contract
- Permanent · On site
- Location
- Southampton, South East
- Closing date
- Sector
- Software Developer
Bang in line with the market for software developer
Reference BBBH19350_1793787505
About the role
Spectrum IT Recruitment is working with an innovative technology business at the forefront of 5G and wireless communications. They're looking for a Senior Software Engineer to join their software team in Southampton.
This role would suit an experienced engineer whose main focus is C or C++ software development, particularly in multithreaded or high-performance systems.
The Role
You'll take a leading role in developing, integrating and optimising software that supports the company's 5G NR Physical Layer (PHY) technology. Working with software, hardware, architecture and system-test teams, you'll tackle complex performance challenges and help shape reliable software for a demanding technical environment.
Key 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
What We're Looking For
Essential:
- 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
Desirable:
- Knowledge of SIMD or hardware acceleration
- An understanding of signal processing
- Exposure to 5G, O-RAN or fronthaul protocols such as eCPRI
Spectrum IT Recruitment (South) Limited is acting as an Employment Agency in relation to this vacancy.
Reference: BBBH19350_1793787505 · Posted 1 day ago · Closes 11 Nov 2026 · Listed via Spectrum IT
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