Foundation Model Engineer

Foundation Model Engineer Cambridge | Competitive salary + benefits About the Company Our client is a well-funded, mission-driven organisation working at the forefront of AI development. Led by an experienced team of founders, investors and engineers, they are focused on building safe, responsible AI systems and are growing quickly from a Cambridge base. The Opportunity Our client is investing heavily in their machine learning infrastructure and compute capability to accelerate model development and inference. This is a chance to join at an early stage and work across the full AI lifecycle, from experimentation through to scalable deployment, with a strong emphasis on technical depth and rigour. They're looking for a highly skilled Foundation Model Engineer with hands-on experience building, training, evaluating and deploying LLMs or multimodal models end to end. The role will focus primarily on model development, data pipelines and system performance. What You'll Do • Design and implement end-to-end LLM training pipelines • Source and, where appropriate, preprocess datasets for training and evaluation • Fine-tune and optimise open weight models (LLMs, vision or traditional ML) • Build evaluation frameworks and define performance metrics • Develop and maintain data pipelines and trai...