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Senior LLM Engineer - Applied AI & Model Optimization

📍 Location
donostia/san sebastián
⏰ Job Type
Full-time
📅 Posted
June 11, 2026

About the Role

Mystery Project is seeking a Senior / Mid LLM Engineer in San Sebastián, Spain. You will play a crucial role in designing, improving, and deploying large language models, focusing on real-world applications. This position emphasizes collaboration with technical teams to optimize AI systems for various industries.

You will be involved in model compression, performance optimization, and mentoring junior engineers while staying updated on advancements in LLM technology.

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