Software Engineer jobs in United Kingdom

Senior Software Security Engineer

New Malden. We offer a range of hybrid and flexible working arrangements - please speak to your recruiter about the options for this particular role

Circa £ 55,000

• Investigate issues found in our systems to understand what changes might need to be made to allow the affected function or service to run as expected
• Modify the existing domain configurations, scripts and software applications as required to ensure that the systems run as expected through development and on to delivery into our platforms
• Design and develop new aspects of our product domain configurations, scripts and software suite to include new or changed requirements on the system design through development and on to delivery into our platforms
• Raise observation reports, execute changes, witness, test and close out those changes with guidance from the area technical lead / team lead as directed
• The successful candidate will be expected to report accurately on progress, issues encountered, to aid the team lead in reporting effectively through the management chain
• The person in role will be expected to be self-starting, self-motivated and competent in their core investigative skillset, researching relevant areas when required if an answer is not immediately obvious

• Experience in Windows domain configuration, active directory, common ports and protocols
• Experience in Windows operating systems and basic networking
• Familiarity with virtualisation technologies (VMWare, vSphere)
• Core scripting (PowerShell preferred) or coding (Visual Studio, C# preferred) experience

• Experience in, systems and software development in complex real-time systems
• An awareness of requirements and the methods of requirement validation
• Software design and configuration management competencies
• An interest in the concepts of software security

As well as a competitive pension scheme, BAE Systems also offers employee share plans, an extensive range of flexible discounted health, wellbeing and lifestyle benefits, including a green car scheme, private health plans and shopping discounts - you may also be eligible for an annual incentive.

The Security Team is a software team that provides both a software application suite and a windows domain configuration which is delivered into multiple products and product variants. The configuration for each system is tailored to be run in such a way so as to meet security requirements that allow them to be accredited for deployment onto operational platforms.

This is a place where you’ll be able to make a real difference. You’ll be part of an inclusive culture that values diversity of thought, rewards integrity, and merit, and where you’ll be emowered to fulfil your potential. We welcome people from all backgrounds and want to make sure that our recruitment processes are as inclusive as possible. If you have a disability or health condition (for example dyslexia, autism, an anxiety disorder etc.) that may affect your performance in certain assessment types, please speak to your recruiter about potential reasonable adjustments.

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

20th November 2025. Interviews for this position will take place W/C 24th November 2025.

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