Full Stack Developer (remote or hybrid)

Fullstack Engineer | AI Start-up | 7-Month fixed-term Contract

Join a European deep-tech leader in quantum and AI.

A well-funded, fast-growing company backed by major global investors with its groundbreaking technology is already transforming AI, compressing large language models by up to 95% and cutting inference costs by 50–80%. This is your chance to be part of a team often described as a “quantum-AI unicorn in the making.”

This is a Hybrid opportunity working out of Zaragoza.

2–5 years of experience across frontend and backend development. ~ Proficient with React/Next.js and TypeScript on the frontend, plus Python (FastAPI/Django) on the backend. ~ Experience building data-intensive dashboards, experiment tracking UIs, or internal automation tools. ~ Strong understanding of API design, data modeling, and frontend–backend integration. ~ Experience with SQL databases, containerized development (Docker), and CI/CD pipelines. ~ Experience with AWS or cloud-based deployment environments. ~ Product-driven approach — able to collaborate with researchers and PMs to translate exploratory workflows into production-quality tools.

Experience with data visualization libraries (Plotly, Recharts, D3.js). Understanding of workflow orchestration or background job systems (Celery, Argo, Flyte). Proven ability to design user experiences that simplify complex R&D processes. Passion for turning automation and ML research insights into polished, user-centric internal products.

Compensation:

Competitive salary, with a signing bonus and a retention bonus at the end of the contract. Flexibility:

This is a hybrid role with flexible working hours. A relocation package is available if needed. We are a fast-scaling company committed to equal pay, diversity, and an inclusive culture. By applying to this role you understand that we may collect your personal data and store and process it on our systems.