Senior LLM Engineer: Multimodal AI, Compression

Multiverse Computing in Barcelona seeks a Senior LLM Engineer to join the Research team, working across data, training, compression and evaluation for large language models and multimodal systems. The role emphasizes strong fundamentals, distributed training on multi-node clusters, and publishing papers when possible. It offers an advanced relocation...

Lexroom.ai in Barcelona is building the next generation of AI for legal work. You’ll design and deploy agent-driven and RAG-based AI systems to solve complex tasks with precision. You’ll tune LLMs, develop search pipelines, and collaborate with legal experts to elevate our platform. Join a fast‑paced team with hybrid work, equity, and a salary range...

Estamos buscando Senior AI Engineer – LLMExperiencia de 5 años o más en desarrollo de software, datos o Machine Learning, con al menos 3 años desarrollando y llevando a producción soluciones basadas enLLM.Dominio dePython, desarrollo de APIs, diseño de servicios, testing y validación de código.Experiencia práctica implementando solucionesRAG,...

Multiverse Computing in Spain is seeking a Senior LLM Engineer to join our Research team.Asegúrese de leer detenidamente la información sobre esta oportunidad antes de presentar su candidatura.You will work across the full model lifecycle: data, distributed training, post-training, compression, evaluation and efficient inference. Our past work includes...

Multiverse Computing Multiverse is a well-funded, fast-growing deep-tech company founded in 2019. We are the largest quantum software company in the EU and have been recognized by CB Insights (2023 and 2025) as one of the 100 most promising AI companies in the world. With 180+ employees and growing, our team is fully multicultural and international....

Aily Labs in Barcelona is seeking a Senior/Lead AI Research Engineer for the Agents Team to push frontiers in LLMs, Agentic AI, and advanced ML systems. You will design experiments, fine-tune models, and build reproducible research pipelines that scale in production. You’ll work with a small, highly technical team, reporting on experiments, sharing...

Can you imagine building AI-powered products that transform how business teams generate strategic insights? Join our expert team to work on a Pharmaceutical sector product, contributing to the development of an AI platform that transforms enterprise knowledge into intelligent decision support. You will apply your knowledge of LLMs , RAG ,...

Lexroom.ai, a Barcelona-based AI company building a legal platform, seeks an experienced ML engineer to design and optimize agent-driven, RAG-based AI systems for complex legal tasks. You'll fine-tune LLMs, develop large-scale search pipelines, and work with legal experts to build reliable, domain-specific data. The role offers hybrid work, equity, and a...

Tendios, Inc. in Barcelona is seeking a Senior AI/ML Engineer to design the intelligence behind our SaaS platform for tender documentation. You will decide models, prototype in Python, and ship features into our Node.js/NestJS/TypeScript stack, collaborating with the AI & Data squad. You will build AI architectures for extraction, classification and...