Software Engineer

Spectrum IT Recruitment is working with an innovative technology business at the forefront of 5G and wireless communications, who are looking for a talented Software Engineer to join their growing software team in Southampton. This is an excellent opportunity for a Software Engineer with strong C/C++ skills who enjoys working close to the hardware and solving challenging performance and optimisation problems. The Role You’ll be responsible for developing, integrating and optimising the infrastructure software underpinning 5G NR Physical Layer (PHY) systems, with a particular focus on delivering real-time performance across embedded platforms. You’ll work closely with software, hardware, architecture and system-test teams, contributing to the development of high-performance 5G technology. Key Responsibilities 🔹 Develop software used to run and test 5G NR PHY algorithms 🔹 Develop and optimise platform-specific code for embedded systems 🔹 Apply SIMD, multi-threading and hardware acceleration techniques 🔹 Integrate PHY algorithms with ARM-based platforms and boards 🔹 Improve and maintain CI testing across the platform 🔹 Support interoperability testing with customers, vendors and operators 🔹 Work closely with hardware, system architecture and system-test teams 🔹 Contribute to technical reviews and customer-facing activities What We're Looking For Essential: Strong C or C++ development experienceExperience with a scripting language such as Python, Groovy or BashStrong software engineering fundamentals and an interest in performance optimisation Desirable: Experience developing for real-time embedded systems and LinuxKnowledge of SIMD, FPGA or DSP-based hardware accelerationUnderstanding of signal processing and optimisation techniquesExperience with FPGA toolchains, particularly Xilinx VivadoExposure to O-RAN architecture and fronthaul protocols such as eCPRIExperience working with ARM-based platforms Why This Opportunity? This is a chance to work on genuinely cutting-edge 5G technology, tackling interesting engineering challenges around performance, embedded systems and hardware acceleration. If you're a Software Engineer who enjoys working at the intersection of software, hardware and wireless communications, we'd love to hear from you.