Full Stack Developer - Digital Developer

About Nabla Education At Nabla Education, we believe in unlocking every student's potential by empowering their teachers with meaningful, flexible, and intuitive tools. Our mission is to make personalized learning not just possible, but practical, and we do it by putting the latest AI at the hands of teachers in real classrooms. We're a fast-moving team building an AI-native offline-first platform used by schools across Spain.

Since we're a small team, you'll also contribute to full-stack development, building the product around the AI you design. This is a rare opportunity to step into a technical leadership role early in your career, with real ownership and real users from day one. Evaluate and benchmark AI models and pipelines, making data-driven decisions on what to improve or replace Build and maintain evaluation frameworks to ensure AI output quality, reliability, and cost-efficiency Collaborate closely with the rest of the team on full-stack development (frontend and backend) Stay on top of the latest AI research and tools, and bring the best of it into our product Hard, interesting problems — handwriting recognition, pedagogical content generation, adaptive learning — this is non-trivial AI work worth doing Degree in Computer Science, Engineering, or a related field, or equivalent practical experience ~2+ years of experience in software development, with a meaningful portion focused on AI/ML or LLM integrations ~ Hands-on experience building and deploying AI features in production (not just notebooks or side projects) ~ Comfort working across the stack — backend (Node preferred) and frontend (React preferred) ~ Location: Sant Cugat (hybrid)