Senior LLM Engineer — Quantum AI

Multiverse Computing is seeking a Senior LLM Engineer to join our Research team in Barcelona. You will oversee the full model lifecycle: data handling, distributed training, post-training, compression, evaluation and efficient inference. Our work includes compressing and healing open-weight models, SFT, RL and distillation across multimodal data, and...

Qilimanjaro Quantum Tech is seeking an AI Engineer to build in-house AI models for engineering and quantum-computing workflows in Barcelona.¿Quiere enviar su solicitud? Lea toda la información sobre este puesto a continuación y luego pulse el botón de solicitar.You will adapt, fine-tune and evaluate models, and integrate successful results into tools...

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...

ERNI - Swiss Software Engineering is building an AI-powered platform for enterprise knowledge and decision support. You will work with LLMs, RAG, knowledge graphs and cloud-native tech to deliver scalable AI capabilities for the Pharma sector. The team values hands-on expertise and ongoing mentorship, with a hybrid office model and strong focus on...

Oxigent Technologies busca un Senior AI Engineer para liderar la adopción técnica de IA, automatización y orquestación agéntica en entornos exigentes. Diseñarás y montarás la infraestructura orquestadora (local y cloud) que integrará RAG, automatizaciones y agentes en flujos de desarrollo y testing.Trabajarás junto a un equipo transversal de...

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.Compruebe a continuación si tiene lo necesario para esta oportunidad y, si es así, envíe su solicitud lo antes posible.You will design experiments, fine-tune models, and build reproducible research...

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...

Our Vision & Products EverAI — Building the Future of AI Companionship One of the Top 15 Largest & Fastest-Growing AI Companies in the World 50 Million Users in 2 years — Help Us Reach 100M first, 500M next At EverAI , we’re shaping what it means to connect with AI. With 50 million users and counting , we're not just building products —...

eDreams ODIGEO is seeking an experienced AI Engineer to join the Data Science team in Barcelona (Hybrid). You will design and build AI-powered products and services, including chatbots, agents, and RAG-based search, collaborating with DS, ML Engineering, and SWE. You’ll own context engineering, deploy on GCP, and ensure reliability, safety, and...