Senior Embedded C++ Engineer

Join our team to develop embedded C software for missioncritical systems used in aviation environments. Youll contribute to nextgeneration navigation threat detection and communication technologies working on modern microcontroller platforms where reliability safety and realtime performance are essential. This role offers the opportunity to apply your expertise in baremetal development STM32 microcontrollers and safetyregulated software standards to deliver robust embedded solutions that support operational capability in challenging environments.

Location: Reading
Onsite: 4 days per week
Seniority: Senior (8 years of experience)
Clearance: Candidates must be willing and eligible to obtain SC clearance.

Key Responsibilities

• Design develop and maintain embedded C software for realtime aviation systems.
• Implement firmware on STM32 microcontrollers and other ARM CortexM platforms (baremetal and RTOSadjacent).
• Apply DO178 principles and contribute to compliance with safetycritical development standards.
• Develop and integrate lowlevel drivers and hardwaresoftware interfaces (e.g. SPI I²C UART CAN).
• Conduct unit integration and system testing to validate deterministic performance.
• Collaborate with electrical systems and mechanical teams to integrate embedded software into complex hardware platforms.
• Produce highquality technical documentation suitable for regulated and safetycritical environments.

Qualifications :

Required Skills

• Strong experience in C for embedded systems (C11/14/17 or newer).
• Handson experience with STM32 and ARM CortexM microcontrollers.
• Proven baremetal development experience and understanding of realtime constraints.
• Understanding of DO178 processes and safetycritical development practices.
• Familiarity with JTAG/SWD debugging oscilloscopes and logic analysers.
• Experience with requirements traceability verification activities and configuration management tools.

Soft Skills & Collaboration

• Clear communication and effective crossfunctional collaboration.
• Detailoriented qualitydriven mindset in regulated environments.
• Problemsolving capability with a proactive approach to continuous improvement.

Required Qualifications

• Bachelors or Masters 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 RTOS or lowlatency scheduling on microcontrollers.
• Knowledge of MISRA C/C and secure coding practices.
• Exposure to signalprocessing or RFadjacent embedded contexts (helpful not essential).
• Familiarity with CI/CD pipelines CMake CUnit/GoogleTest and static analysis tools.

Additional Information :

Why join us 

We bring together entrepreneurial tech-driven people to deliver innovative solutions for leading companies.

At ALTEN youll 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)

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. 

ALTEN is committed to fostering a diverse and inclusive workplace and values the strength that comes from a global mix of backgrounds and perspectives. We welcome applications from all suitably qualified candidates regardless of background or protected characteristics under the Equality Act 2010. If you require any reasonable adjustments during the recruitment process please let us know. 

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.

Remote Work :

No

Employment Type :

Full-time