Cyber Software Engineer - Security Cleared

Cyber Software Engineer - SC / DV / eDV Cleared

New Permanent Opportunity for Cyber Software Engineers in London with Security Clearance to work on Mission-Critical, National Security projects

Role: Cyber Software Engineer

Location: London (hybrid) Clearance: SC, MOD DV or eDV (must be held or eligible)

To apply: Email

We are looking for a Cyber Software Engineer to join a team delivering high-assurance cyber capabilities into UK defence and national security environments. This role is focused on operational technology (OT) cyber projects, working close to real systems and real users.

You'll be part of a highly cleared engineering team developing secure, robust software where correctness, performance and assurance genuinely matter.

What you'll be doing

Developing high-assurance software in C++ for cyber and security-critical systems

Working on operational technology cyber projects, not just enterprise IT

Contributing to secure system design, implementation and verification

Collaborating with cyber specialists, systems engineers and end users

Supporting software through its full lifecycle in classified environments

Essential skills & experience

Strong C++ software engineering experience

Background in secure / high-assurance systems (defence, cyber, safety-critical or similar)

Solid understanding of secure coding practices and software design

Comfortable working in on-site, classified environments

Active SC, DV or eDV clearance

Nice to have

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

Why this role

Work on genuinely operational cyber projects with real-world impact

High-trust, highly technical engineering environment

Long-term programmes with stability and purpose

London-based role with a strong on-site engineering culture