Senior Embedded C++ Engineer for Real-Time Defence Systems

ALTEN LTD - UK; Crawley; On-site; GBP 90,000 - 120,000; Full time

Benefits offered by this job

Private Medical Insurance

Cycle Tech Scheme

Employee assistance programme

Life insurance

Pension Scheme

Social gatherings

Flexible working

Job summary

ALTEN LTD - UK is seeking an experienced embedded software engineer to join a senior team in Crawley. You will design and implement embedded C++ for high‑reliability defence applications, with a focus on robustness, security, and deterministic performance across real‑time platforms.

The role is on‑site four days a week, requires 8+ years in embedded C++, and offers UK SC security clearance eligibility. You\'ll collaborate with cross‑discipline engineering groups and contribute to architecture

Qualifications

• Bachelor’s or Master’s degree in Software Engineering, Computer Science, or related discipline.
• Must be eligible for UK SC Security Clearance.
• Experience in embedded development for communications or signalling systems.
• Strong C++ knowledge (C++11/14/17).

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.
• Debugging, optimisation, and performance testing across embedded targets.
• Produce clear design specifications, requirements, and documentation.
• Ensure adherence to secure coding standards and governance.
• Support integration activities with wider engineering teams and participate in architecture reviews.

Skills

C++ for embedded systems

Embedded development for comms

Secure coding practices

Requirements traceability

Embedded debugging & optimization

Education

Bachelor’s or Master’s in Software Eng / CS

Tools

CI/CD tooling

Linux kernel drivers

RTOS environments

Job description

ALTEN LTD - UK is seeking an experienced embedded software engineer to join a senior team in Crawley. You will design and implement embedded C++ for high‑reliability defence applications, with a focus on robustness, security, and deterministic performance across real‑time platforms.

The role is on‑site four days a week, requires 8+ years in embedded C++, and offers UK SC security clearance eligibility. You\'ll collaborate with cross‑discipline engineering groups and contribute to architecture