Software Engineer; C

Expleo is a trusted partner for end-to-end, integrated engineering, quality services and management consulting for digital transformation. We help businesses harness unrelenting technological change to successfully deliver innovations that will help them gain a competitive advantage and improve the everyday lives of people around the globe.

As part of our continued growth in Flight Software development and testing, we are seeking a Software Engineer with experience in C programming and DO‑178-compliant development to support the development and certification of next‑generation electric rotorcraft (eVTOL) platforms.

This role focuses on delivering high-integrity embedded software for safety‑critical aerospace systems, ensuring compliance with DO‑178 standards and integration within a broader system engineering and certification framework. You will be working on cutting‑edge electrical, propulsion, and control systems that underpin the operation of advanced electric aircraft.

This is an excellent opportunity to contribute to the development of innovative, safety‑critical aerospace systems while working within a structured certification environment.

This role is Hybrid working in Bristol.

• Develop embedded software in C for aerospace systems, following DO‑178 development processes and standards.
• Produce and maintain software requirements, architecture, and design artefacts in line with certification expectations.
• Participate in all stages of the software development lifecycle, including requirements, design, coding, integration, and verification.
• Perform software verification and validation activities, including unit testing, integration testing, and system‑level testing.
• Ensure full requirements traceability between software requirements, design, code, and test artefacts.
• Support development of verification strategies and test cases, ensuring compliance with DO‑178 objectives.
• Collaborate with systems, safety, and hardware teams to ensure correct system integration and behaviour.
• Support certification activities, including preparation of compliance evidence and interaction with certification authorities.
• Identify and resolve software defects and anomalies, ensuring robust and reliable system performance.
• Contribute to configuration management and change control, ensuring traceability and integrity of software baselines.
• Participate in peer reviews, design reviews, and code reviews, ensuring adherence to quality and safety standards.

• Bachelor’s or Master’s degree in Aerospace Engineering, Mechanical Engineering, or related field.
• Chartered engineer or working towards chartered status within a recognised and relevant professional body.
• Applications are invited from candidates who may hold HNC/HND in a relevant engineering discipline in concert with significant and demonstrable subject‑matter expertise in the system domain.

• Strong proficiency in C programming for embedded systems.
• Experience with DO‑178B/C processes, including software lifecycle data and compliance objectives.
• Understanding of requirements‑based development and traceability.
• Experience with software verification and validation, including unit and integration testing.
• Knowledge of real‑time systems and embedded architectures.
• Experience with configuration management and version control tools.
• Strong problem‑solving and debugging skills.
• Ability to produce clear, structured technical documentation.
• Strong communication skills and ability to work in multidisciplinary teams.

• Experience working on flight control systems, avionics, or electrical power systems.
• Familiarity with model‑based development (e.g., MATLAB/Simulink).
• Knowledge of DO‑254 or hardware/software integration processes.
• Experience with CI/CD pipelines and automated testing frameworks.
• Familiarity with EASA certification environments (CS‑23/CS‑27/CS‑29).
• Experience in Advanced Air Mobility (AAM), eVTOL, or electric propulsion systems.
• Knowledge of cybersecurity considerations for embedded systems.

• Candidates must have the right to live and work in the UK.
• Visa sponsorship is not available for this role.

• Colla…