Job Title: Principal AI/LLM Engineer Job Location: Rochester, Kent. Onsite Salary: Circa £75,000 depending on experience and skills Who we are: Join BAE Systems and you''ll be part of something bigger. As a valued member of our global colleague network, you''ll bring your unique skills and perspectives to help pioneer progress and protect what matters most. You''ll be trusted to play your part in delivering the advanced, technology-led defence, aerospace and security solutions of tomorrow - shaping a safer future, for all of us. What you''ll be doing: Architecture and Design Authority - Define / maintain the reference architecture for the BAE ES UK AI/LLM infrastructure across on-prem GPU clusters, virtualized environments. Experience in Engineering and Deployment - Deploy and maintain LLM inference, Implement RAG pipelines, Build CI/CD for AI models, Optimisation and Monitoring of the AI stack. Security, Compliance and Governance - Work closely with IT Security, Data Governance, and Architecture Boards to ensure compliance with GDPR, BAE Global Cyber Security Standards, SOC2, ISO27001, HIPAA (if applicable). Mentoring other staff members. Presenting to senior leadership Te am. Core D uties: Proven experi ence d eploying AI/ML platforms in enterprise/on-prem environments Deep knowledge of Kubernetes, Docker, and infrastructure automation (Terraform, Helm, Ansible) Good experience with LLM frameworks (Hugging Face, vLLM, DeepSpeed, LangChain, Ray) Familiarity with message