Senior Embedded Software Engineer

X4 Group Ltd; Eastleigh; Hybrid; GBP 72,000 - 88,000; Full time

Benefits offered by this job

Bupa healthcare

26 days holiday + bank holidays

Share Options

7% pension employer contribution

Job summary

X4 Group Ltd is seeking an Embedded Software Engineer (Junior to Senior) for a hybrid role in Southampton. You'll develop embedded software in C/C++ across the full stack, work with Linux environments, and collaborate with hardware and systems teams to deliver reliable, high-performance software for demanding applications.

The role is flexible from junior to senior level, with onsite three days per week and two days remote; salary is up to £80,000 depending on experience, plus a comprehensive

Qualifications

• Embedded software development experience in C and/or C++
• Experience working in Linux environments
• Understanding of Object-Oriented Design (OOD), SOLID principles, and design patterns
• Familiarity with unit testing and modern software development practices
• Exposure to CAN, RS232/RS422, UDP, or TCP/IP communications

Responsibilities

• Developing and maintaining embedded software in C/C++
• Designing, testing, and integrating software for complex embedded systems
• Working across the full software development lifecycle
• Collaborating with hardware, FPGA, and systems engineering teams
• Building robust, high-performance software for advanced engineering applications

Skills

Embedded C/C++

Linux environments

OOD & SOLID

Unit testing

CAN/RS232/UDP/TCP-IP

Job description

Embedded Software Engineer (Junior - Senior) | Hybrid Southampton ( 2 Days per week WHF)| Up to £80,000

Location: Southampton (Hybrid - 4 days per week onsite with potential flexibility over time) Salary: Up to £80,000, dependent on experience Job Type: Permanent

The Role

A globally leading engineering business is looking for Embedded Software Engineers to join an innovation team at their Southampton site, developing embedded software for high-reliability systems. This is a hybrid role, with three days per week required onsite.

The client works across the full embedded stack, from low-level C through to multi-threaded, OS-based C++, and the role can be shaped around your own strengths and experience level. Whether you're a junior engineer building your embedded skillset or a senior engineer looking for technical depth, there's scope to tailor the work to you. The client offer a range of benefits including

• Salary up to £75,000 depending on experience
• Hampshire - 3 days per week onsite
• 26 days' holiday + bank holidays
• Bupa healthcare
• 1 additional day's holiday for every year of service
• Share Options
• Technically varied projects and challenging engineering problems
• Highly experienced multidisciplinary engineering environment
• Strong long-term career development opportunities
• Excellent benefits package including 7% pension employer contribution

What You'll Be Doing

• Developing and maintaining embedded software in C/C++
• Designing, testing, and integrating software for complex embedded systems
• Working across the full software development lifecycle
• Collaborating with hardware, FPGA, and systems engineering teams
• Building robust, high-performance software for advanced engineering applications

What We're Looking For

• Embedded software development experience in C and/or C++
• Experience working in Linux environments
• Understanding of Object-Oriented Design (OOD), SOLID principles, and design patterns
• Familiarity with unit testing and modern software development practices
• Exposure to communication protocols such as CAN, RS232/RS422, UDP, or TCP/IP

Important: due to the security clearance required for this role, candidates must have been resident in the UK for at least five years.

Desirable Experience

• MATLAB/Simulink
• OpenGL or Vulkan
• CUDA or OpenCL
• FPGA or HDL exposure
• Video processing or machine learning
• Background in defence, aerospace, automotive, or another high-reliability industry