Fullstack Developer

Open Assessment Technologies

📍 Vitoria-Gasteiz, Araba / Álava, Spain

Full-time Other-General Posted February 18, 2026

Job Description

Open Assessment Technologies (OAT) is looking for a Full Stack Developer to help us deliver world-class, open-source learning and assessment solutions.


You’ll work across frontend and backend , building robust, user-friendly web applications from end to end — from designing and implementing features to ensuring top performance, accessibility, and scalability. This is an opportunity to contribute to impactful educational technology projects in an international, multicultural environment.


What You’ll Do

  • Design standalone systems or major new features in existing platforms.
  • Build and customize frontend experiences using JS (Svelte, ReactJS) , CSS , HTML5 .
  • Implement backend developments and platform customizations in Node.js or PHP ...