Software Engineer - SC Cleared

We are particularly interested in engineers with strong Python development experience, alongside knowledge of C++ and secure software engineering. What you will be doing

You will contribute to the design, development and assurance of security-critical software used in demanding operational environments.

Your responsibilities will include:

• Developing secure, high-assurance software, primarily using Python
• Contributing to software development using C++ where required
• Working on operational technology (OT) cyber programmes
• Contributing to secure system architecture, design, implementation and verification
• Collaborating with cyber engineers, systems engineers and operational users
• Supporting software throughout its full lifecycle within classified environments, You will work on genuinely operational cyber projects with real-world impact, alongside highly technical specialists in a high-trust engineering environment.

The role offers:

• Meaningful work supporting UK defence and national security
• Long-term programmes providing stability, purpose and career development
• Exposure to technically challenging, security-critical projects
• Collaboration with cyber specialists, systems engineers and operational users
• A London-based hybrid working arrangement with a strong on-site engineering culture

We are looking for a software engineer with strong commercial Python experience and an interest in cyber security, secure development or other high-assurance environments.

Essential experience:

• Strong commercial Python software engineering experience
• Experience in secure, high-assurance, defence, cyber, safety-critical or similar environments
• A good understanding of secure coding practices and software design principles
• Confidence working on-site within classified environments
• Active SC, DV or eDV clearance, or eligibility to hold the required clearance

Desirable experience:

• Commercial experience with C++
• Experience with Golang and/or Rust
• Cyber security qualifications, such as CEH, OSCP or similar
• Vulnerability research and/or reverse engineering experience
• Exposure to OT environments, embedded systems or low-level development
• Experience working with MOD or national security customers, If you are an experienced Python engineer who enjoys solving complex problems and wants to apply your skills to high-assurance cyber capabilities, we would be keen to hear from you.

Please note that the original role description specifies C++ as an essential skill. This version has intentionally repositioned Python as the primary language and C++ as secondary, in line with your updated requirement. Skills

• C++
• Cyber
• Defence
• National Security
• SC Cleared
• NSD
• Python