Embedded Software Engineer

ALTEN is a global engineering and technology consultancy operating across over 35 countries worldwide. We partner with industry leaders across sectors including Aeronautics, Aerospace, Defence, Naval, Automotive, Energy, Rail, IT and many more to deliver innovative engineering solutions that drive technological advancement & support sustainable transformation.

Our teams of passionate and agile engineers work on cutting‑edge projects that shape the future of technology and sustainability. At ALTEN, we empower talented engineers to innovate, solve complex challenges, and deliver impactful solutions that build tomorrow’s world—today.

Join us and start building tomorrow’s world today!

Join our team as an Embedded Software Engineer and play a key role in developing cutting‑edge embedded solutions for aviation and defence applications. You will work on STM
32 microcontroller‑based systems
, designing, coding, and integrating software to support advanced antenna platforms. Your expertise in C++ and STM
32 CUBE will be critical in delivering robust, high‑performance embedded systems that meet the rigorous demands of the defence sector.

Location: Reading

On‑site: 4 days per week

Seniority: Mid‑Senior

Clearance: Candidates must be willing and eligible to obtain SC clearance.

• Develop embedded software for STM
  32 microcontrollers, focusing on performance, reliability, and integration.
• Design, code, and test firmware using C++ and STM
  32 CUBE.
• Integrate embedded solutions onto the platform, ensuring seamless functionality and compliance with system requirements.
• Collaborate with cross‑functional teams (hardware, systems, and test engineers) to deliver end‑to‑end solutions.
• Support debugging, optimisation, and validation of embedded systems.
• Contribute to documentation, peer reviews, and continuous improvement of embedded software processes.

• 4+ years of experience in embedded software development, with a focus on STM
  32 microcontrollers.
• Proficiency in C++ and STM
  32 CUBE development environment.
• Hands‑on experience with microcontroller integration, bare‑metal programming, and platform‑level testing.
• Strong understanding of real‑time embedded systems and low‑level programming.
• Ability to work in a regulated environment, adhering to defence/aerospace standards.

• Excellent problem‑solving and debugging skills.
• Strong communication and teamwork abilities.
• Proactive approach to quality, compliance, and continuous learning.
• Ability to work effectively in a fast‑paced, multidisciplinary environment.

• Bachelor’s or Master’s degree in Computer Science, Software Engineering, Electronics Engineering, or relevant technical/military background with equivalent hands‑on experience.

• Experience with RTOS (FreeRTOS, Zephyr, etc.) and embedded Linux.
• Knowledge of communication protocols (CAN, SPI, I2C, UART).
• Familiarity with defence or aviation standards (DO-178C, MISRA C++).
• Exposure to automated testing and CI/CD pipelines for embedded systems.

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.

• 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).

We are proud to support the Armed Forces Covenant & actively encourage applications from members of the Armed Forces community, including veterans, reservists, service leavers, and military spouses/partners. We recognise the value of military skills and experience and are committed to ensuring that no applicant is unfairly disadvantaged during our recruitment and selection processes.

This role may require you to have or be willing to go through Security Clearance. As part of the onboarding process candidates will be asked to complete a Baseline Personnel Security Standard; details of the evidence required to apply may be found on the government website  If you are unable to meet this and any associated criteria, then your employment may be delayed, or rejected.

Details of this will be discussed with you at interview.