Job Title: Senior/Principal Software Engineer

Job Location: Rochester, Kent. Onsite

Salary: Up to £65.000 per annumdepending on experience

Who we are:

Join BAE Systems and you'll be part of something bigger. As a valued member of our global colleague network, you'll bring your unique skills and perspectives to help pioneer progress and protect what matters most. You'll be trusted to play your part in delivering the advanced, technology-led defence, aerospace and security solutions of tomorrow - shaping a safer future, for all of us.

Role Description:

As a Principal Software Engineer, you willleadthe design and delivery of embedded software forcomplex, safety critical systems. You will develop drivers, protocols and human-machine interfaces. Responsible for technical direction and ensuring robust, certifiable solutions. Working across the full lifecycle, you will define architectures and solvecomplexengineeringchallengesthrough integration, verification and validation. You will provide technicalleadership, mentor engineers and influence best practice. Engaging with customers and stakeholders, you will shape strategy, drive innovation and play a key role in delivering high-impact solutions.

Core Duties:

• Leaddesign and development of embedded software, including drivers, protocols, human-machine interfaces with certification artefacts
• Define system and software architectures from requirements using structured design, modelling and simulation
• Drive integration, verification and validation within a safety critical environment
• Provide technicalleadershipthrough mentoring, peer reviews and best practice
• Deliver reliable estimates, including sizing and reuse
• Engage with customers to resolve technicalchallengesand shape solutions
• Contribute to engineering processes, design reviews and strategicdecisions, ensuring high quality, compliant delivery

Essential Skills:

• You will have a degree or equivalent qualification in a Scientific/Engineering (electronics-engineering, software-engineering, physics, math's) environment
• You will have excellent Software Engineering skills, with significant experience in C/C++
• You will have extensive experience of Software Architecture Design using UML or other recognised model-based design techniques as well as experience in UML for software design in CAMEO, EA, Rhapsody or integrity Modeler
• You will have extensive experience of interfacing software with hardware in a real-time environment and development experience to DO-178B/C Standards

The Software team:

You will be working as part of a team of experienced, passionate and innovative engineers creating world-leadingcontroland display systems. This is an extremely exciting andchallengingrole and will present the opportunity to design products for the world's most advanced commercial and military fixed wing and rotary wing aircraft. Exposure to the customer and end user, as well as working alongside like-minded engineers, makes this a unique opportunity for the rightcandidate.

Why BAE Systems?

Here you'll build a career with purpose and limitless possibilities. With lifelong learning and meaningful work - this is a place where you can grow your career withconfidenceand be empowered to be your best. You'll be recognised for your contribution and enjoy rewards tailored to what's most important to you and your family - support for your financial and personal wellbeing, as well as a balanced lifestyle. In an environment embracing sustainable ways of working and with astrongsense of shared purpose, our supportive culture is a place you can feel you belong and proud of the difference you make.

A place where everyone can thrive:

We're committed to building an inclusive workplace where everyone feels valued and supported. We know that a diversity of backgrounds, perspectives and experiences strengthens our teams and is vital to the work we do.

Please be aware that many roles at BAE Systems are subject to both security and exportcontrolrestrictions. These restrictions mean that factors such as your nationality, any nationalities you may have previously held, and your place of birth can restrictthe rolesyou are eligible to perform within the organisation. Allapplicantsmustas a minimum achieve Baseline Personnel Security Standard. Many roles also require higher levels of National Security Vetting whereapplicantsmusttypically have 5 to 10 years of continuous residency in the UK depending on the vetting level required forthe role, to allow for meaningful security vetting checks.

Closing Date: 21st July 2026

We reserve the right to close this vacancy early if we receive sufficient applications forthe role. Therefore, if you are interested, please submit your application as early as possible.

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