Principal Software Engineer (Safety-Critical)

We're looking for an experienced Principal Software Engineer to join a growing technology business developing complex autonomous systems. Reporting directly to the CTO, you'll combine hands-on engineering with technical leadership, shaping architecture, supporting engineers and facilitating Scrum delivery.

Experience developing software in mission-critical or safety-critical real-time environments is essential. Ideally, you'll bring experience in autonomous systems, robotics or flight software, within aviation, aerospace, drones/UAVs, autonomous vehicles, MOD/defence or similar.

This role could also be suited to Quant Engineers with experience working across real-time systems. Location: - London - hybrid working.

What you'll be doing

Leading real-time software development and architectural decisions. Translating technical priorities into clear engineering plans. Facilitating sprint planning, stand-ups and retrospectives. Mentoring engineers, reviewing code and maintaining software quality.

What we're looking for

Senior, Lead or Principal-level experience, with development skills in Embedded C, C++ and Python. Experience with embedded software, real-time systems and hardware/software integration. Strong technical leadership and Agile/Scrum facilitation skills.

Understanding of software architecture, testing and controlled development lifecycles. Familiarity with DO-178C, ISO 26262 or IEC 61508 (nice to have) Apply via the advert or email your CV to for a confidential chat. Spectrum IT Recruitment (South) Limited is acting as an Employment Agency in relation to this vacancy...

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