Principal Software Engineer

Location: Great Baddow – Enjoy flexible working arrangements, including part-time options and the ability to accrue hours. Let’s discuss what works best for you!

Salary: Up to £75,900, based on your skills and experience.

As a Principal Software Engineer, you will play a pivotal role in shaping our software solutions. Your responsibilities will include:

• Deriving and maintaining software requirements from a baseline set of systems requirements.
• Producing and maintaining software designs that meet these requirements.
• Transforming designs into deliverable software solutions.
• Conducting peer reviews and verifying solutions across Maritime Services.
• Leading technical reviews and authorizing software engineering designs.
• Acting as the Engineering technical lead for software solutions at a sub-system level.
• Maintaining software solutions to address defects and add new functionalities.
• Supporting the development of individuals and teams to enhance skills and competencies.
• Assisting in the creation of software estimates for sub-systems.

We’re looking for candidates who bring a wealth of experience and knowledge, including:

• Proficiency in at least one high-level programming language.
• Extensive experience with high-level design methodologies, particularly UML.
• Strong understanding of the software lifecycle and various models (e.g., Waterfall, Agile).
• A BEng/BSc in Computer Science or a related Engineering or Numerate subject.
• Familiarity with software standards (e.g., ISO/IEC/IEE 12207).
• Knowledge of Ada95 is a plus.
• Chartered Engineer (CEng) status or working towards it.
• Comprehensive understanding of configuration management and experience with related tools.
• Understanding of model-based techniques is advantageous.

At BAE Systems, we believe in rewarding our team members. In addition to a competitive pension scheme, you’ll enjoy:

• Employee share plans.
• An extensive range of flexible health, wellbeing, and lifestyle benefits.
• A green car scheme and private health plans.
• Shopping discounts and potential eligibility for an annual incentive.

Join a dynamic team of over 30 professionals dedicated to supporting and upgrading capabilities for the Royal Navy. In this role, you will deliver software products and enhancements over the next decade while providing ongoing support for existing products. This is a fantastic opportunity to develop your skills and potentially step into more senior positions within a global business.

Here, you can truly make a difference! We foster an inclusive culture that values diverse perspectives, rewards integrity, and empowers you to reach your full potential. We welcome individuals from all backgrounds and strive to make our recruitment processes as inclusive as possible. If you have a disability or health condition that may affect your performance, we encourage you to discuss potential reasonable adjustments with us.

Important Security Information: Many roles at BAE Systems are subject to security and export control restrictions. Factors such as nationality and residency may affect your eligibility for certain positions. All applicants must meet the Baseline Personnel Security Standard, with many roles requiring higher levels of National Security Vetting.

Closing Date: 25th November 2025

We may close this vacancy early if we receive sufficient applications, so don’t wait—submit your application as soon as possible!

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