Senior Software Engineer (Safety)

As a Senior Software Engineer, you will lead development and deployment of cutting-edge AI systems for diverse clients. You will design, build, and deploy scalable, production-grade ML software and infrastructure that meets rigorous operational and ethical standards. The role works within the National Security and AI Safety business unit, partnering directly with clients and cross-functional teams, driving technical strategy, mentoring teams on best practices, and collaborating with Frontier Labs.

Responsibilities

Leading technical scoping and architectural decisions for high-impact ML systems and capability testing of Frontier AI models; Designing and building production-grade ML software, tools, and scalable infrastructure; Defining and implementing best practices and standards for deploying machine learning at scale across the business; Collaborating with engineers, data scientists, product managers, and commercial teams to solve critical client challenges and leverage opportunities; Acting as a trusted technical advisor to customers and partners, translating complex concepts into actionable strategies; Mentoring and developing junior engineers, actively shaping the team's engineering culture and technical depth

Requirements

Significant experience building and deploying secure and scalable LLM applications; comfortable with multi-agent harness tooling and AI Safety evaluation procedures; understanding of the full ML lifecycle and confidence operationalising models built with frameworks like TensorFlow or PyTorch; deep expertise in software engineering and strong Python skills, focusing on building robust, reusable systems; demonstrable hands-on experience with cloud platforms (e.g., AWS, Azure, GCP), specifically cloud architecture, infrastructure management, and end-to-end cybersecurity practices; extensive experience with container and orchestration tools such as Docker and Kubernetes; thriving in fast-paced, high-growth environments, demonstrating ownership and autonomy in driving projects to completion; communicating exceptionally well, confidently guiding both technical teams and senior, non-technical stakeholders