Are you passionate about pushing the boundaries of Generative AI? Our client, an innovative deep-tech company developing next-generation AI technologies, is looking for talented LLM Engineers to join a world-class research and engineering team.

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This is an opportunity to work on cutting-edge machine learning challenges, developing large language models from the ground up and transforming advanced research into real-world products.

What You'll Do

- Design, build, train, and optimize Large Language Models from scratch.
- Develop and fine-tune transformer architectures for complex production use cases.
- Improve model performance, efficiency, scalability, and inference speed.
- Research and implement novel approaches to model compression and optimization.
- Evaluate models using robust benchmarking and testing methodologies.
- Collaborate with AI researchers, software engineers, and product teams to deliver innovative AI solutions.
- Mentor junior engineers and contribute to technical best practices.

What We're Looking For
- Master's or PhD in Computer Science, Artificial Intelligence, Machine Learning, Data Science, or a related field.




- Commercial experience designing and training LLMs or transformer-based models from scratch—not just using existing APIs.
- Strong expertise in deep learning fundamentals, neural networks, and transformer architectures.
- Advanced Python programming skills with frameworks such as PyTorch and Hugging Face.
- Experience training, fine-tuning, and evaluating foundation models.
- Solid understanding of GPU computing and large-scale model training.
- Experience working with cloud platforms, Docker, and deploying machine learning models.
- Excellent problem-solving skills and the ability to thrive in a collaborative research-driven environment.

Nice to Have
- Experience with RAG architectures and retrieval systems.
- Knowledge of inference frameworks such as TensorRT or vLLM.
- Experience with distributed training or HPC environments.
- Research publications in AI or deep learning.
- Experience working with multimodal, computer vision, or speech models.

Why Apply?
- Work on genuinely innovative AI technology at the forefront of the industry.
- Join a highly collaborative international team of leading AI experts.
- Solve technically challenging problems with real-world impact.
- Excellent opportunities for professional growth and continuous learning. xhfqzwm
- Competitive salary and benefits package.

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📌 Llm Engineer (Barcelona)
🏢 European Tech Recruit
📍 Barcelona