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.

We are seeking a highly capable C++ Software Engineer with broad, full-lifecycle experience in embedded software engineering to support the development of next-generation missile systems. The role sits within a mid-sized, multidisciplinary engineering team responsible for delivering on-board software for complex defence programmes.

The successful candidate will demonstrate technical leadership in the design, implementation, and delivery of safety-critical embedded software solutions, while also supporting and mentoring junior engineers. This is a high-impact opportunity to contribute to mission-critical defence systems in a collaborative engineering environment.

• Develop and deliver embedded C++ software components in accordance with safety-critical standards and project requirements.
• Implement new and updated software requirements as part of component development activities.
• Produce high-quality unit tests and black-box tests to support software verification and validation.
• Perform static code analysis and address identified issues in line with MISRA and safety standards.
• Generate and maintain safety evidence, technical documentation, and design artefacts.
• Submit completed work products into configuration control systems for peer review.
• Review peer submissions and provide constructive, technically robust feedback.
• Collaborate with systems, hardware, and test engineering teams to ensure integrated solution delivery.
• Support the technical development and mentoring of junior engineers within the team.
• Contribute to continuous improvement of software processes, tools, and engineering practices.

• Degree (or equivalent experience) in Software Engineering, Computer Science, Electronics Engineering, or a related technical discipline.

• Formal training or demonstrable experience in safety-critical or embedded software development environments

• Strong experience developing embedded software solutions using C++.

• Proven familiarity with MISRA standards and safety-critical software engineering practices.

• Good working knowledge of the complete software engineering lifecycle, from requirements through certification.

• Experience with model-based development using UML or tools such as IBM Rhapsody.

• Ability to produce clear technical documentation and safety evidence.

• Strong problem-solving and analytical skills.

• Effective communication skills and the ability to work collaboratively with internal stakeholders.

• Experience using requirements management tools.

• Experience with software configuration management tools.

• Exposure to Continuous Integration, Continuous Delivery, or Continuous Deployment (CI/CD) practices.

• Experience working in Agile or hybrid development environments.

• Prior experience supporting or leading technical reviews and mentoring less experienced engineers.

• Demonstrable experience delivering complex embedded software solutions in defence, aerospace, or similarly regulated industries.

• Experience contributing to component-level software development, including requirements implementation, testing, static analysis, and safety artefact generation.

• Proven ability to lead technical implementation activities and support successful project delivery.

• Experience collaborating across multidisciplinary engineering teams in a structured development environment.

• UK National
• SC (Security Clearance) will be required for this role.

• Collaborative working environment – we stand shoulder to shoulder with our clients and our peers through good times and challenges 
• We empower all passionate technology loving professionals by allowing them to expand their skills and take part in inspiring projects 
• Expleo Academy - enables you to acquire and develop the right skills by delivering a suite of accredited training courses 
• Competitive company benefits
• Always working as one team, our people are not afraid to think big and challenge the status quo

#LI-BM1

• As a Disability Confident Committed Employer we have committed to:
• Ensure our recruitment process is inclusive and accessible
• Communicating and promoting vacancies
• Offering an interview to disabled people who meet the minimum criteria for the job
• Anticipating and providing reasonable adjustments as required
• Supporting any existing employee who acquires a disability or long term health condition, enabling them to stay in work at least one activity that will make a difference for disabled people

“We are an equal opportunities employer and welcome applications from all suitably qualified persons regardless of their race, sex, disability, religion/belief, sexual orientation or age”. 

We treat everyone fairly and equitably across the organisation, including providing any additional support and adjustments needed for everyone to thrive