Senior Embedded Software Engineer

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.
• Required Skills
• Strong proficiency in C++ for embedded systems (C++11/14/17).
• Experience in embedded development for communications or signalling systems (modems, radios, data links, or similar).
• Familiarity with embedded debugging , performance optimisation , and hardware‑software interaction.
• Understanding of secure coding practices , configuration management, and development governance.
• Experience with requirements traceability , verification, and system‑level testing.
• Soft Skills & Collaboration
• Strong communication skills for cross‑discipline collaboration.
• Ability to work rigorously within regulated environments .
• Proactive, problem‑solving mindset with attention to detail.
• Required Qualifications
• Bachelor's or Master's degree in Software Engineering , Computer Science , or related discipline or relevant technical military background with equivalent experience.
• Must be eligible to hold or already hold UK SC Security Clearance .
• Desirable Skills
• 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.
• Why join us?
• We bring together entrepreneurial, tech-driven people to deliver innovative solutions for leading companies.
• At ALTEN, you'll work on exciting projects, supported by ongoing learning, mentoring, and clear career development tailored to your goals.
• Join a passionate team and help build tomorrow, today.
• In short you get:
• A personalised career path and a rewarding management style
• A huge diversity of engineering projects and industries
• Private Medical Insurance
• Cycle & Tech Scheme
• Employee assistance programme
• Life insurance & Pension Scheme
• Social atmosphere, regular gatherings & team buildings
• Flexible way of working (role dependent)

Benefits

Additional Information

Join our team to develop embedded C++ software for high‑reliability communication and information‑exchange systems used in defence environments. You'll contribute to next‑generation communication and signal‑processing technologies , working across embedded platforms that demand robustness , security , and deterministic performance . This role is ideal for an engineer experienced in embedded C++ who enjoys contributing to complex systems that underpin secure and mission‑critical operations. Location: Crawley On‑site: 4 days per week Seniority: Senior (8+ years of experience) Clearance: Candidates must be willing and eligible to obtain SC clearance.

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