Senior Software Engineer

Senior Software Engineer in Southampton (SO14), SO14 | Spectrum IT Recruitment Limited Find a job Post a job Sign up Never miss an opportunity. We’ll find jobs that fit Get Started Search These jobs were popular with other job seekers Software Engineer STSdefence Gosport (PO12) Competitive salary and Corporate Benefits 3 weeks ago Staff Software/Firmware Engineer (Bare Metal, IC Bring-Up) Hays Fareham (PO15), PO15 £70000 - £80000 per annum + £70-80k + 10% 22 hours ago NEW Software Architect Spectrum IT Recruitment Limited Southampton (SO14), SO14 £90000 - £110000 per annum 1 day ago CAD Team Lead (Electronics) Ernest Gordon Recruitment Southampton (SO14), SO14 £40000 - £45000 per annum + Training + Progression 1 day ago Principal Software Engineer Matchtech (Fulfiment) Cowes (PO31), PO31 Up to £73.68 per hour 1 month ago Senior Systems Engineer BAE Systems Dorchester, Dorset 1 day ago Principal Systems Engineer Employment Solutions Limited Winchester (SO21), SO21 £58000.00 - £64000.00 per annum 1 day ago Senior Systems Engineer Saab UK Fareham (PO14), PO14 Negotiable 5 days ago Software Engineer Morson Edge South Farnborough, Farnborough (GU14) £0 - 45k per year 2 days ago Principal Software Engineer V06450 Morson Edge Cowes (PO31) Inside IR35 1 month ago Senior Software Engineer Spectrum IT Recruitment Limited View Profile Southampton (SO14), SO14 Permanent Contract; On-site Published: 1 day ago £60000.00 - £65000.00 per annum Apply Save Senior Software Engineer Spectrum IT Recruitment Limited Apply Poor Fit Your CV is missing most of what's needed for this role. Based on resume.pdf Poor fit Strong fit Here are some jobs that are a better fit for you Rate these recommendations Strong Fit Blinds and Curtains Installer Hillarys Blinds Southampton (SO18) £50,000+ earnings p/a 3 weeks ago Strong Fit Blinds and Curtains Installer Hillarys Blinds Salisbury (SP1) £50,000+ earnings p/a 3 weeks ago See why 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. Apply Spectrum IT Recruitment Limited Banking and Financial Services 30 Jobs The company is part of Company Profile In Short Industry IT & Telecommunications Founded 2008 Location Chilworth, Southampton Company size 11-50 Who We Are Established in 2008,
Spectrum IT is a leading Software and Technology specific recruitment agency, providing
permanent and contract IT resource for businesses. Our team of around 30
employees are based on the University of Southampton Science Park, a key hub
for technology on the South Coast. Who We Can Help Spectrum IT works
with a wide cross section of businesses, from start-ups to multinationals. 95%
of placements are within Software focused businesses, or where Software is key
to the business model. Typically, around 200 different businesses are supported
annually, with more than 900 candidates placed. How We Work We bring together talented
IT professionals with businesses of all sizes. Our extensive experience can
help your business with single hires right through to building large software
development project teams of 50+. Regular engagement with the IT community
enables us to keep up to date with the ever-changing IT landscape. Similar Senior Software Engineer Jobs Popular with Other Job Seekers Software Engineer STSdefence Gosport (PO12) Competitive salary and Corporate Benefits 3 weeks ago Staff Software/Firmware Engineer (Bare Metal, IC Bring-Up) Hays Fareham (PO15), PO15 £70000 - £80000 per annum + £70-80k + 10% 22 hours ago NEW Software Architect Spectrum IT Recruitment Limited Southampton (SO14), SO14 £90000 - £110000 per annum 1 day ago CAD Team Lead (Electronics) Ernest Gordon Recruitment Southampton (SO14), SO14 £40000 - £45000 per annum + Training + Progression 1 day ago Principal Software Engineer Matchtech (Fulfiment) Cowes (PO31), PO31 Up to £73.68 per hour 1 month ago Senior Systems Engineer BAE Systems Dorchester, Dorset 1 day ago Principal Systems Engineer Employment Solutions Limited Winchester (SO21), SO21 £58000.00 - £64000.00 per annum 1 day ago Senior Systems Engineer Saab UK Fareham (PO14), PO14 Negotiable 5 days ago Software Engineer Morson Edge South Farnborough, Farnborough (GU14) £0 - 45k per year 2 days ago Principal Software Engineer V06450 Morson Edge Cowes (PO31) Inside IR35 1 month ago Senior Software Engineer jobs Senior Software Engineer jobs in Southampton IT jobs IT jobs in Southampton Software Development jobs Software Development jobs in Southampton Jobs in Southampton Software Engineer jobs Senior Test Engineer jobs Software Developer jobs Senior Software Application Engineer jobs Senior Software Engineering jobs Application Software Engineer jobs Senior Applications Developer jobs Senior Lead Developer jobs Entry Level Software Developer jobs Junior Software Engineer jobs Senior Cloud Engineer jobs Senior Data Engineer jobs Senior Engineer jobs Senior Software Engineer C jobs Senior Systems Engineer jobs Senior Hardware Engineer jobs Get hired. Find success. Totaljobs About us Careers at Totaljobs Press Partners Privacy policy Terms and conditions Cookies Legal and compliance Accessibility Jobseekers Salary Planner Jobseeker help centre Career advice Recruiters Post job ads Recruiting news Courses Contact us - recruiters Recruit internationally Download App store Play store The Stepstone Group UK Ltd © 2026 We use cookies We use cookies to operate our website, measure how people use our services to help us improve them, enrich usage profiles and personalise the content displayed to you. We also share information about your use of our site with our social media, advertising, and analytics partners, who may combine it with other information, to show you relevant ads on other websites, and to measure the performance of our advertising. Some cookies are essential for the operation of our website. If you would prefer us not to use the non-essential cookies, click “Just necessary”, but please be aware that this may impact your experience of our site and the services we are able to offer. Click “Accept” if you’re happy for us to place these cookies. You can change your mind at any time. Store and / or access information on a device Cookies, device identifiers, or other information can be stored or accessed on your device for the purposes presented to you. Personalised ads and content, ad and content measurement, audience insights and product development Ads and content can be personalised based on a profile. More data can be added to better personalise ads and content. The performance of ads and content can be measured. Insights about audiences who have viewed the ads and content can be extracted. Data can be used to build or improve user experience, systems and software. Display third-party content (social networks, videos) Content from social networks and embedded content from third-party providers can be displayed. Identifiers derived from authentications If an identifier is created based on authentication data, such as contact details associated with online accounts you have set up on websites or apps (e.g. email address, phone number) or customer identifiers (e.g. an identifier provided by your telecommunications provider), then this identifier can be used to recognize you across websites, apps and devices if you are logged in with the same contact details. Just Necessary Accept All Cookie Settings You can also exercise your right to object to data processing based on legitimate interests under “Privacy Policy”. Privacy Policy Cookie policy