San Sebastián
We are partnered with a well-funded, fast-growing deep-tech company, recognised by leading industry analysts as one of the most promising AI organisations globally. They are seeking an experienced LLM Engineer to design, develop, and optimise large language models, and integrate them into production systems. You will work on cutting-edge AI solutions and collaborate across teams to deliver real-world impact. This is a hybrid role in San Sebastian (2-3 days onsite per week). Responsibilities • Develop and optimise LLMs, including model compression techniques, • Evaluate and benchmark model performance, • Fine-tune models for accuracy, efficiency, and robustness, • Identify improvements and propose new solutions, • Contribute to documentation and best practices, • Mentor junior team members and participate in code reviews, • Stay current with advances in LLMs and AI Required Qualifications • Master’s or PhD in AI, Computer Science, or related field, • 2+ years working with LLMs and frameworks (e.g. PyTorch, Hugging Face), • Must have experience building LLMs from scratch, • Strong understanding of deep learning and neural networks, • Experience with GPUs, cloud platforms (e.g. AWS), and Docker, • Strong Python skills, • Excellent problem-solving and communication skills, • Fluent in English Preferred Qualifications • Experience delivering AI projects in industry, • HPC / large-scale workload experience, • Experience with inference tools (e.g. TensorRT, vLLM), • Experience with RAG systems and LLM evaluation, • Familiarity with MLOps / DevOps practices, • Knowledge of responsible AI principles, • Additional language skills (optional) By applying to this role you understand that we may collect your personal data and store and process it on our systems. For more information please see our Privacy Notice ___