Overview:
Expleo is seeking Software Engineers to join our growing Belfast team, delivering high-integrity engineering solutions across a range of complex and safety-critical domains. This role is ideally suited to candidates with experience in safety-critical or defence environments, though we also welcome strong software engineers from non-safety-critical backgrounds who are motivated to transition into this space through structured training and mentorship.
Responsibilities:
As a Software Engineer at Expleo, you will work on the design, development, testing, and integration of software systems used in regulated and high-assurance environments. You will contribute to the delivery of robust, secure, and reliable software solutions, often within defence, aerospace, or other safety-critical industries.
While prior safety-critical experience is highly desirable, we provide comprehensive training and support for engineers looking to develop expertise in standards-driven development environments.
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Design, implement, and test high-quality software solutions in line with project and regulatory requirements
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Work within structured development processes (e.g. requirements traceability, verification & validation)
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Collaborate with systems engineers, test engineers, and stakeholders across multidisciplinary teams
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Contribute to software design documentation and technical specifications
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Participate in code reviews and support continuous improvement of engineering practices
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Ensure compliance with relevant safety, security, and quality standards where applicable
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Support integration and validation activities in lab or simulated environments
Qualifications:
- Candidates without direct safety-critical experience are encouraged to apply. Expleo provides:
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Structured onboarding into safety-critical engineering practices
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Training in relevant industry standards and compliance processes
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Mentorship from experienced engineers within regulated domains
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Opportunities to work on progressively complex and high-assurance systems
Essential skills:
- Strong understanding of software engineering principles and lifecycle development
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Good problem-solving skills and attention to detail
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Ability to work effectively within a team and communicate technical concepts clearly
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Experience in software development using languages C, C++
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Bare Metal Programming
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Knowledge of embedded systems or real-time software development
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HW/SW interfacing
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Ability to hit the ground running
Desired skills:
- Background in safety-critical, defence, aerospace, automotive, rail, or other regulated industries
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Familiarity with standards such as DO-178C, ISO 26262, IEC 61508, or similar
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Safety Experience working to develop SIL2 compliant systems
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Defence Experience
Experience:
- Background in safety-critical, defence, aerospace, automotive, rail, or other regulated industries
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Familiarity with standards such as DO-178C, ISO 26262, IEC 61508, or similar
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Experience with requirements management and traceability tools
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Knowledge of embedded systems or real-time software development
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Experience with configuration management tools (e.g. Git, SVN)
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Experience with requirements management and traceability tools
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Experience in software development using languages such as C, C++, Java, or similar
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Experience working in structured development environments (Agile, V-Model, or similar)
Benefits:
- Collaborative working environment – we stand shoulder to shoulder with our clients and our peers through good times and challenges
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We empower all passionate technology loving professionals by allowing them to expand their skills and take part in inspiring projects
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Expleo Academy - enables you to acquire and develop the right skills by delivering a suite of accredited training courses
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Competitive company benefits such as medical and dental insurance, pension, life assurance, employee wellbeing programme, sports and social events, birthday hampers and much more!
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Always working as one team, our people are not afraid to think big and challenge the status quo
As a Disability Confident Committed Employer we have committed to:-
Ensure our recruitment process is inclusive and accessible
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Communicating and promoting vacancies
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Offering an interview to disabled people who meet the minimum criteria for the job
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Anticipating and providing reasonable adjustments as required
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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
