Overview

LLM Engineer (Mid-Senior) – Location: Several options within Spain. We are partnering with a well-funded, rapidly scaling deep-tech company operating at the intersection of advanced AI and next-generation computing to find their next Senior LLM Engineer. Backed by strong commercial traction and enterprise clients, the company is building highly efficient, production-grade AI systems designed to solve complex real-world problems at scale. Their team combines world-class researchers and engineers working on cutting-edge challenges in large-scale model development, optimization, and deployment. This is an opportunity to join a highly technical environment where you will directly contribute to the future of large language models, not just apply them.

Responsibilities

• Design, train, and optimize transformer-based models, contributing across pretraining, post-training alignment (SFT, RLHF, DPO), evaluation, and inference optimization.
• Bui...