Principal Systems Architect

Principal Systems Architect 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 Lead Platform Engineer FBI &TMT London Negotiable 2 weeks ago Principal Cloud Architect - AWS & AI Fruition Group UK £110000 - £130000.00 per annum 4 hours ago NEW Software Architect (C#, .Net, Cloud) Spectrum IT Recruitment Limited Fareham (PO14), PO14 £90000 - £110000 per annum + bonus, pension, healthcare 1 day ago Enterprise Architect – Digital Engineering Synergize Consulting Limited Reading (RG1) 2 weeks ago Technical Architect McGregor Boyall Associates Limited South East 1 day ago Principal Engineer Software Engineering (Specialist Software) JAM Recruitment Ltd Camberley (GU16), GU16 Up to £67.47 per hour 4 weeks ago Senior Software Engineer - Platform Fruition Group London Negotiable 6 hours ago NEW Solution Architect (8 Month FTC) Hackajob Ltd Canon's Marsh, Bristol (BS1) Competitive 1 week ago Enterprise Architect Morson Edge Reading, Berkshire £92.50 - 92.50 per hour + inside IR35 3 days ago Forward Deployed Engineer - Learn Palantir Foundry VIQU IT Recruitment London £50k - 70k per year 1 day ago Principal Systems Architect Spectrum IT Recruitment Limited View Profile Southampton (SO14), SO14 Permanent Contract; On-site Published: 1 day ago £100000 - £110000 per annum Apply Save Principal Systems Architect Spectrum IT Recruitment Limited Apply An exciting opportunity for an experienced Principal System Architect to provide technical leadership across the development of advanced, high-performance technology. Working across systems, algorithms, software, FPGA and ASIC engineering, you will shape product architectures, establish technical direction and translate complex requirements into practical, scalable solutions. You will combine strategic influence with hands-on architectural expertise, guiding engineering teams and working directly with customers and partners. This role would suit a highly experienced systems engineer or architect who enjoys solving complex technical challenges, influencing product development and supporting other technical specialists. Key Responsibilities Lead architectural development across complex products and IP, maintaining alignment between customer requirements, product strategy and engineering delivery. Define system architectures, including hardware/software partitioning, interfaces and implementation approaches. Lead architectural and algorithm trade-offs across performance, throughput, latency, resource usage and power. Provide technical direction on requirements, system decomposition, architectural modelling, performance analysis and verification strategy. Guide implementation decisions across software, FPGA and ASIC platforms. Lead customer technical discussions, feasibility studies and integration activities. Resolve complex engineering issues and maintain architectural consistency across products and teams. Mentor engineers and architects, contributing to technical standards and long-term technology planning. Skills Required Extensive experience in system architecture and the development of complex signal-processing, modem or communications products. Proven ability to define, analyse and manage complex system and product requirements. Strong experience in hardware/software partitioning, interface definition and architectural design. Ability to lead technical trade-offs across software and hardware implementation approaches. Demonstrable technical leadership across multidisciplinary engineering teams. Significant customer-facing experience, including technical studies, solution evaluation and product or IP integration. Knowledge of 3GPP standards, including 5G NR or significant 4G LTE experience. Strong communication skills, with the ability to explain complex technical concepts clearly to engineering and commercial stakeholders. Desirable Experience Development of complex IP for FPGA or ASIC implementation. Taking products from FPGA-based designs towards ASIC deployment. ASIC development, hardware acceleration and digital signal processing. Fixed-point design, modelling and implementation. Proficiency in MATLAB, Python and C++. Contributions to product roadmaps, technology strategy and long-term architectural planning. Mentoring senior engineers or architects and improving engineering practices. This is an opportunity to influence both technical strategy and practical delivery, helping shape sophisticated products from architectural definition through to customer deployment. 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 34 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 Principal Systems Architect Jobs Popular with Other Job Seekers Lead Platform Engineer FBI &TMT London Negotiable 2 weeks ago Principal Cloud Architect - AWS & AI Fruition Group UK £110000 - £130000.00 per annum 4 hours ago NEW Software Architect (C#, .Net, Cloud) Spectrum IT Recruitment Limited Fareham (PO14), PO14 £90000 - £110000 per annum + bonus, pension, healthcare 1 day ago Enterprise Architect – Digital Engineering Synergize Consulting Limited Reading (RG1) 2 weeks ago Technical Architect McGregor Boyall Associates Limited South East 1 day ago Principal Engineer Software Engineering (Specialist Software) JAM Recruitment Ltd Camberley (GU16), GU16 Up to £67.47 per hour 4 weeks ago Senior Software Engineer - Platform Fruition Group London Negotiable 6 hours ago NEW Solution Architect (8 Month FTC) Hackajob Ltd Canon's Marsh, Bristol (BS1) Competitive 1 week ago Enterprise Architect Morson Edge Reading, Berkshire £92.50 - 92.50 per hour + inside IR35 3 days ago Forward Deployed Engineer - Learn Palantir Foundry VIQU IT Recruitment London £50k - 70k per year 1 day ago Principal Systems Architect jobs Principal Systems Architect jobs in Southampton No Discipline jobs No Discipline jobs in Southampton Jobs in Southampton Principal Consultant jobs Project Support Officer jobs Project Management Officer jobs Principal Architect jobs Principal Solutions Architect jobs Enterprise Architect jobs Lead Design Engineer jobs Systems Consultant jobs Solution Architect jobs Project Officer jobs Head Of Software Engineering jobs Program Director jobs Business Architect jobs Systems Architect jobs Security Architect jobs Principal Systems Engineer jobs Get hired. Find success. Get started 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