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Principal Software Engineer
Job Location:
Monthly Salary:
Posted:
21 August 2026 (Yesterday)
Posted:
Application Deadline:
18 November 2026
Application Deadline:
Vacancies:
1 Vacancy
Vacancies:
Job Summary
DEA Aviation is the UK-based lead operational company within the wider DEA Group. As part of a strategic corporate structure the Group includes European Specialised Aviation Operations (ESAO) a wholly owned subsidiary based in Malta.
Our technology is at the core of what we do. We design and build integrated software and hardware systems that bring together complex sensor technologies and different technical standards. The result: flexible reliable systems that perform under pressure and deliver on tight timelines.
The Principal Software Engineer has responsibility for owning both the airborne software architecture and the AWS cloud infrastructure including regular updating of end-to-end cybersecurity in accordance with Secure by Design development and delivery of robust critical business & aviation mission systems.
The Principal Software Engineer has responsibility for owning both the airborne software architecture and the AWS cloud infrastructure including regular updating of end-to-end cybersecurity in accordance with Secure by Design development and delivery of robust critical business & aviation mission systems.
In this hands-on role you build high-quality software collaborate closely across the organisation while growing your technical influence in a highly regulated environment. You take ownership of your work contribute to team standards and continuously develop your skills while solving real-world problems.
You care about clean code reliable systems and delivering value in a safe and efficient way.
Key Duties & Responsibilities
- Design build and maintain scalable applications using Python and React
- Contribute to solutions from design through to delivery and support with guidance from senior engineers
- Develop applications including Progressive Web Apps using React Flask and Python backends
- Build and integrate REST APIs and contribute to event-driven services
- Troubleshoot and resolve issues across business and aviation systems owning resolution
- Deliver robust changes consistently and communicate progress clearly
- Write and maintain clear technical and user documentation
- Work within a multi-disciplinary team contributing to customer and regulatory requirements
- Write clean maintainable code and continuously improve your approach
- Build reusable components and contribute to front-end architecture using React
- Apply basic resilience patterns such as retries and timeouts with support from senior engineers
- Consider performance and scalability including latency and reliability
- Contribute to microservices-based systems and API development
- Follow secure development practices and support security requirements
- Help implement observability through logging and monitoring tools
- Use CI/CD pipelines to build test and deploy your work
Technical Experience & Qualifications
- Hold a degree in Computer Science Software Engineering or equivalent practical experience
- Have a proven track record of owning software delivery from inception through to production and maintenance
- Thorough understanding and experience in software development lifecycles requirements management and traceability - e.g. Agile V-model DOORS
- Must be eligible for UK SC clearance
Skills Profile
- Highly competent in Python JavaScript (React) Docker and AWS
- Working knowledge of relational and NoSQL databases (e.g. PostgreSQL MongoDB DynamoDB)
- Expertise in software engineering fundamentals including object-oriented programming
- Exposure to AWS services (e.g. EC2 Lambda CloudWatch)
- Familiarity with Git and collaborative development workflows
- Some experience with Docker or containerised environments
- Strong skills with CI/CD practices and automated testing
- Strong understanding of Linux environments
- Strong problem-solving skills and a lifelong learner
- Communicate clearly and work effectively in a team
- Working within regulated environments
- A proactive mindset
- Naturally default to data-driven decision making
Required Experience:
Staff IC
About Company
DEA and our sister company ESAO are a world leading specialist technology-led provider of complex aerial data acquisition services. A pioneer in airborne data gathering, DEA/ESAO use ground-breaking techniques and the most advanced and innovative technologies in the industry to help y ... View more
