GPU Software Engineer

SII Services Limited; Portsmouth; On-site; GBP 80,000 - 100,000; Full time

Job summary

A technology consulting firm based in Portsmouth is seeking a Software Engineer to develop advanced image processing algorithms using multi-GPU architectures and CUDA. Responsibilities include implementing high-performance software, collaborating on design phases, and producing technical documentation. The ideal candidate has strong experience in C/C++, familiarity with GPU acceleration, and a solid understanding of HPC concepts. This role offers a competitive salary and benefits including private medical insurance, flexible working options, and professional development opportunities.

Benefits

Private Medical Insurance

Life Cover

Income Protection

25 days holiday

Flexible working

Pension Scheme

Training and mentoring

Qualifications

• Strong experience in C and/or C++.
• Proven experience developing GPU-accelerated software using CUDA.
• Experience with multi-GPU architectures and performance optimisation.
• Solid understanding of high-performance computing concepts.
• Experience implementing or optimising image processing algorithms.

Responsibilities

• Implement radar image processing algorithms on multi-GPU platforms.
• Develop high-performance software using CUDA with C/C++.
• Participate in the software lifecycle: design, development, testing.
• Collaborate with engineering teams for optimal implementation strategies.
• Optimise processing pipelines to minimise image processing time.

Skills

C

C++

CUDA

GPU-accelerated software

High-performance computing

Tools

NVIDIA RTX-class GPUs

Job description

SII is seeking a Software Engineer to support the implementation of advanced image processing and image generation algorithms derived from satellite-based radar data. The algorithms have already been defined and validated via a coded prototype. The objective of this work package is to optimise and implement these algorithms on multi-GPU architectures, leveraging CUDA cores on NVIDIA RTX-class GPUs (e.g. RTX 6000) to achieve high-performance, efficient image processing.,

Responsibilities

• Implement pre-defined radar image processing and image generation algorithms on multi-GPU platforms
• Develop high-performance software using CUDA with C/C++
• Participate in the full software lifecycle: design, development, test, and verification
• Collaborate with the wider system and software engineering teams during the design phase to define optimal algorithm partitioning and GPU implementation strategies
• Optimise processing pipelines to minimise end-to-end image processing time
• Produce clear and maintainable technical documentation
• Design, code, test, and verify software deliverables in line with work package objectives
• Ensure the solution operates within specific project configurations, parameters, and constraints
• Support integration and validation activities within the delivery team

Essential Qualifications

• Strong experience in C and/or C++
• Proven experience developing GPU-accelerated software using CUDA
• Experience with multi-GPU architectures and performance optimisation
• Solid understanding of high-performance computing (HPC) concepts
• Experience implementing or optimising image processing algorithms
• Ability to work through design, implementation, and verification phases independently

Desirable Qualifications

• Experience working with radar data or sensor-based image generation
• Familiarity with NVIDIA RTX-class GPUs (e.g. RTX 6000)
• Experience working to ECSS standards (preferred but not essential)
• Background in space, defence, or aerospace projects
• Experience working within constrained, safety- or performance-critical systems

SII Group delivers Digital Services, IT, Engineering, and Consulting to diverse industries, enabling digital transformation through our commitment to Growth, People, and CSR. With over 16,000 professionals across 21 countries, we're recognised as a "Great Place to Work" for fostering a high-trust culture. Our core values of Trust, Transparency, and Quality drive our work package delivery, ensuring we meet and exceed client expectations as a committed partner. Since 2016, SII UK has supported top Aerospace & Defence, Aviation, Transportation, and Finance clients, empowering digital transformation with industry-leading engineering expertise. Let's Tech Together is our promise to encourage innovation and teamwork. We support our engineers with development opportunities and a collaborative, inclusive environment where every voice is valued and empowered.

Benefits & Compensation

• Competitive Basic Salary
• 6% Employers Contribution + 6% as a salary sacrifice
• Private Medical Insurance, Life Cover and Income Protection
• 25 days holiday
• 10 days full sick pay per year
• Flexible working
• Cycle to Work & TechScheme
• Continuous professional development
• Corporate access to the Udemy platform, Group Income protection
• Life Cover
• Pension Scheme
• Perks Scheme
• Training and mentoring