Senior Embedded C++ Engineer — Defence & SC Ready

ALTEN Group; Crawley; Hybrid; GBP 85,000 - 115,000; Full time

Benefits offered by this job

Private Medical Insurance

Life insurance & Pension Scheme

Flexible way of working

Job summary

ALTEN is a global engineering and technology consultancy operating across more than 35 countries. We partner with industry leaders in Aeronautics, Defence, Automotive, IT and energy to deliver innovative engineering solutions that drive sustainable transformation.

Join us to develop embedded C++ software for high-reliability communication and information-exchange systems used in defence environments. You’ll contribute to communication and signal-processing technologies, working on embedded

Qualifications

• Bachelor’s or Master’s degree in Software Engineering, Computer Science, or related discipline or relevant military background.
• Must be eligible to hold UK SC Security Clearance.
• Experience with communication stacks, DSP concepts, or RF-adjacent technologies.
• Familiarity with embedded Linux or RTOS environments.
• Experience with CI/CD tooling, model-based design, or static analysis tools.
• Background in defence, avionics, or secure-systems engineering.

Responsibilities

• Design, implement, and maintain embedded C++ software for real-time communication and signal-processing systems.
• Develop and support software for embedded communication modules, modems, and RF-adjacent components.
• Conduct debugging, optimisation, and performance testing across embedded targets to ensure reliability under operational loads.
• Produce clear and traceable design specifications, requirements, and documentation aligned with regulated development practices.
• Ensure adherence to secure coding standards, governance policies, and safety-critical development procedures.
• Support integration activities with wider engineering teams and contribute to architecture and design reviews.

Skills

C++ (embedded)

Embedded systems experience

Secure coding practices

Requirements traceability

Regulated environments

Education

Software Engineering / Computer Science degree

Tools

CI/CD tooling

Model-based design

Static analysis tools

Job description

ALTEN is a global engineering and technology consultancy operating across more than 35 countries. We partner with industry leaders in Aeronautics, Defence, Automotive, IT and energy to deliver innovative engineering solutions that drive sustainable transformation.

Join us to develop embedded C++ software for high-reliability communication and information-exchange systems used in defence environments. You’ll contribute to communication and signal-processing technologies, working on embedded